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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/clk/mvebu
Initial import
Diffstat (limited to 'drivers/clk/mvebu')
-rw-r--r--drivers/clk/mvebu/Kconfig44
-rw-r--r--drivers/clk/mvebu/Makefile12
-rw-r--r--drivers/clk/mvebu/armada-370.c183
-rw-r--r--drivers/clk/mvebu/armada-375.c184
-rw-r--r--drivers/clk/mvebu/armada-38x.c167
-rw-r--r--drivers/clk/mvebu/armada-39x.c156
-rw-r--r--drivers/clk/mvebu/armada-xp.c208
-rw-r--r--drivers/clk/mvebu/clk-corediv.c315
-rw-r--r--drivers/clk/mvebu/clk-cpu.c248
-rw-r--r--drivers/clk/mvebu/common.c299
-rw-r--r--drivers/clk/mvebu/common.h58
-rw-r--r--drivers/clk/mvebu/dove.c193
-rw-r--r--drivers/clk/mvebu/kirkwood.c343
-rw-r--r--drivers/clk/mvebu/orion.c210
14 files changed, 2620 insertions, 0 deletions
diff --git a/drivers/clk/mvebu/Kconfig b/drivers/clk/mvebu/Kconfig
new file mode 100644
index 000000000..276962554
--- /dev/null
+++ b/drivers/clk/mvebu/Kconfig
@@ -0,0 +1,44 @@
+config MVEBU_CLK_COMMON
+ bool
+
+config MVEBU_CLK_CPU
+ bool
+
+config MVEBU_CLK_COREDIV
+ bool
+
+config ARMADA_370_CLK
+ bool
+ select MVEBU_CLK_COMMON
+ select MVEBU_CLK_CPU
+ select MVEBU_CLK_COREDIV
+
+config ARMADA_375_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_38X_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_39X_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ARMADA_XP_CLK
+ bool
+ select MVEBU_CLK_COMMON
+ select MVEBU_CLK_CPU
+ select MVEBU_CLK_COREDIV
+
+config DOVE_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config KIRKWOOD_CLK
+ bool
+ select MVEBU_CLK_COMMON
+
+config ORION_CLK
+ bool
+ select MVEBU_CLK_COMMON
diff --git a/drivers/clk/mvebu/Makefile b/drivers/clk/mvebu/Makefile
new file mode 100644
index 000000000..645ac7ea3
--- /dev/null
+++ b/drivers/clk/mvebu/Makefile
@@ -0,0 +1,12 @@
+obj-$(CONFIG_MVEBU_CLK_COMMON) += common.o
+obj-$(CONFIG_MVEBU_CLK_CPU) += clk-cpu.o
+obj-$(CONFIG_MVEBU_CLK_COREDIV) += clk-corediv.o
+
+obj-$(CONFIG_ARMADA_370_CLK) += armada-370.o
+obj-$(CONFIG_ARMADA_375_CLK) += armada-375.o
+obj-$(CONFIG_ARMADA_38X_CLK) += armada-38x.o
+obj-$(CONFIG_ARMADA_39X_CLK) += armada-39x.o
+obj-$(CONFIG_ARMADA_XP_CLK) += armada-xp.o
+obj-$(CONFIG_DOVE_CLK) += dove.o
+obj-$(CONFIG_KIRKWOOD_CLK) += kirkwood.o
+obj-$(CONFIG_ORION_CLK) += orion.o
diff --git a/drivers/clk/mvebu/armada-370.c b/drivers/clk/mvebu/armada-370.c
new file mode 100644
index 000000000..756f0f39d
--- /dev/null
+++ b/drivers/clk/mvebu/armada-370.c
@@ -0,0 +1,183 @@
+/*
+ * Marvell Armada 370 SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+#define SARL 0 /* Low part [0:31] */
+#define SARL_A370_SSCG_ENABLE BIT(10)
+#define SARL_A370_PCLK_FREQ_OPT 11
+#define SARL_A370_PCLK_FREQ_OPT_MASK 0xF
+#define SARL_A370_FAB_FREQ_OPT 15
+#define SARL_A370_FAB_FREQ_OPT_MASK 0x1F
+#define SARL_A370_TCLK_FREQ_OPT 20
+#define SARL_A370_TCLK_FREQ_OPT_MASK 0x1
+
+enum { A370_CPU_TO_NBCLK, A370_CPU_TO_HCLK, A370_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio a370_coreclk_ratios[] __initconst = {
+ { .id = A370_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = A370_CPU_TO_HCLK, .name = "hclk" },
+ { .id = A370_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+static const u32 a370_tclk_freqs[] __initconst = {
+ 166000000,
+ 200000000,
+};
+
+static u32 __init a370_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select = 0;
+
+ tclk_freq_select = ((readl(sar) >> SARL_A370_TCLK_FREQ_OPT) &
+ SARL_A370_TCLK_FREQ_OPT_MASK);
+ return a370_tclk_freqs[tclk_freq_select];
+}
+
+static const u32 a370_cpu_freqs[] __initconst = {
+ 400000000,
+ 533000000,
+ 667000000,
+ 800000000,
+ 1000000000,
+ 1067000000,
+ 1200000000,
+};
+
+static u32 __init a370_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq;
+ u8 cpu_freq_select = 0;
+
+ cpu_freq_select = ((readl(sar) >> SARL_A370_PCLK_FREQ_OPT) &
+ SARL_A370_PCLK_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(a370_cpu_freqs)) {
+ pr_err("CPU freq select unsupported %d\n", cpu_freq_select);
+ cpu_freq = 0;
+ } else
+ cpu_freq = a370_cpu_freqs[cpu_freq_select];
+
+ return cpu_freq;
+}
+
+static const int a370_nbclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 2}, {2, 2},
+ {1, 2}, {1, 2}, {1, 1}, {2, 3},
+ {0, 1}, {1, 2}, {2, 4}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {2, 2},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int a370_hclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 6}, {2, 3},
+ {1, 3}, {1, 4}, {1, 2}, {2, 6},
+ {0, 1}, {1, 6}, {2, 10}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {2, 6}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int a370_dramclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 3}, {2, 3},
+ {1, 3}, {1, 2}, {1, 2}, {2, 6},
+ {0, 1}, {1, 3}, {2, 5}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init a370_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SARL_A370_FAB_FREQ_OPT) &
+ SARL_A370_FAB_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A370_CPU_TO_NBCLK:
+ *mult = a370_nbclk_ratios[opt][0];
+ *div = a370_nbclk_ratios[opt][1];
+ break;
+ case A370_CPU_TO_HCLK:
+ *mult = a370_hclk_ratios[opt][0];
+ *div = a370_hclk_ratios[opt][1];
+ break;
+ case A370_CPU_TO_DRAMCLK:
+ *mult = a370_dramclk_ratios[opt][0];
+ *div = a370_dramclk_ratios[opt][1];
+ break;
+ }
+}
+
+static bool a370_is_sscg_enabled(void __iomem *sar)
+{
+ return !(readl(sar) & SARL_A370_SSCG_ENABLE);
+}
+
+static const struct coreclk_soc_desc a370_coreclks = {
+ .get_tclk_freq = a370_get_tclk_freq,
+ .get_cpu_freq = a370_get_cpu_freq,
+ .get_clk_ratio = a370_get_clk_ratio,
+ .is_sscg_enabled = a370_is_sscg_enabled,
+ .fix_sscg_deviation = kirkwood_fix_sscg_deviation,
+ .ratios = a370_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(a370_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc a370_gating_desc[] __initconst = {
+ { "audio", NULL, 0, 0 },
+ { "pex0_en", NULL, 1, 0 },
+ { "pex1_en", NULL, 2, 0 },
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex0", "pex0_en", 5, 0 },
+ { "pex1", "pex1_en", 9, 0 },
+ { "sata0", NULL, 15, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "tdm", NULL, 25, 0 },
+ { "ddr", NULL, 28, CLK_IGNORE_UNUSED },
+ { "sata1", NULL, 30, 0 },
+ { }
+};
+
+static void __init a370_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-370-gating-clock");
+
+ mvebu_coreclk_setup(np, &a370_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, a370_gating_desc);
+}
+CLK_OF_DECLARE(a370_clk, "marvell,armada-370-core-clock", a370_clk_init);
+
diff --git a/drivers/clk/mvebu/armada-375.c b/drivers/clk/mvebu/armada-375.c
new file mode 100644
index 000000000..c7af2242b
--- /dev/null
+++ b/drivers/clk/mvebu/armada-375.c
@@ -0,0 +1,184 @@
+/*
+ * Marvell Armada 375 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+/*
+ * For the Armada 375 SoCs, the CPU, DDR and L2 clocks frequencies are
+ * all modified at the same time, and not separately as for the Armada
+ * 370 or the Armada XP SoCs.
+ *
+ * SAR1[21:17] : CPU frequency DDR frequency L2 frequency
+ * 6 = 400 MHz 400 MHz 200 MHz
+ * 15 = 600 MHz 600 MHz 300 MHz
+ * 21 = 800 MHz 534 MHz 400 MHz
+ * 25 = 1000 MHz 500 MHz 500 MHz
+ * others reserved.
+ *
+ * SAR1[22] : TCLK frequency
+ * 0 = 166 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR1_A375_TCLK_FREQ_OPT 22
+#define SAR1_A375_TCLK_FREQ_OPT_MASK 0x1
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT 17
+#define SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_375_tclk_frequencies[] __initconst = {
+ 166000000,
+ 200000000,
+};
+
+static u32 __init armada_375_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR1_A375_TCLK_FREQ_OPT) &
+ SAR1_A375_TCLK_FREQ_OPT_MASK);
+ return armada_375_tclk_frequencies[tclk_freq_select];
+}
+
+
+static const u32 armada_375_cpu_frequencies[] __initconst = {
+ 0, 0, 0, 0, 0, 0,
+ 400000000,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 600000000,
+ 0, 0, 0, 0, 0,
+ 800000000,
+ 0, 0, 0,
+ 1000000000,
+};
+
+static u32 __init armada_375_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_375_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ } else
+ return armada_375_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A375_CPU_TO_DDR, A375_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_375_coreclk_ratios[] __initconst = {
+ { .id = A375_CPU_TO_L2, .name = "l2clk" },
+ { .id = A375_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_375_cpu_l2_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 2}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_375_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {1, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {2, 3},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {2, 3}, {0, 1}, {0, 1},
+ {0, 1}, {1, 2}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_375_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR1_A375_CPU_DDR_L2_FREQ_OPT) &
+ SAR1_A375_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A375_CPU_TO_L2:
+ *mult = armada_375_cpu_l2_ratios[opt][0];
+ *div = armada_375_cpu_l2_ratios[opt][1];
+ break;
+ case A375_CPU_TO_DDR:
+ *mult = armada_375_cpu_ddr_ratios[opt][0];
+ *div = armada_375_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_375_coreclks = {
+ .get_tclk_freq = armada_375_get_tclk_freq,
+ .get_cpu_freq = armada_375_get_cpu_freq,
+ .get_clk_ratio = armada_375_get_clk_ratio,
+ .ratios = armada_375_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_375_coreclk_ratios),
+};
+
+static void __init armada_375_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_375_coreclks);
+}
+CLK_OF_DECLARE(armada_375_core_clk, "marvell,armada-375-core-clock",
+ armada_375_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_375_gating_desc[] __initconst = {
+ { "mu", NULL, 2 },
+ { "pp", NULL, 3 },
+ { "ptp", NULL, 4 },
+ { "pex0", NULL, 5 },
+ { "pex1", NULL, 6 },
+ { "audio", NULL, 8 },
+ { "nd_clk", "nand", 11 },
+ { "sata0_link", "sata0_core", 14 },
+ { "sata0_core", NULL, 15 },
+ { "usb3", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb", NULL, 18 },
+ { "gop", NULL, 19 },
+ { "sata1_link", "sata1_core", 20 },
+ { "sata1_core", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "xor1", NULL, 23 },
+ { "copro", NULL, 24 },
+ { "tdm", NULL, 25 },
+ { "crypto0_enc", NULL, 28 },
+ { "crypto0_core", NULL, 29 },
+ { "crypto1_enc", NULL, 30 },
+ { "crypto1_core", NULL, 31 },
+ { }
+};
+
+static void __init armada_375_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_375_gating_desc);
+}
+CLK_OF_DECLARE(armada_375_clk_gating, "marvell,armada-375-gating-clock",
+ armada_375_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
new file mode 100644
index 000000000..8bccf4ecd
--- /dev/null
+++ b/drivers/clk/mvebu/armada-38x.c
@@ -0,0 +1,167 @@
+/*
+ * Marvell Armada 380/385 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * SAR[14:10] : Ratios between PCLK0, NBCLK, HCLK and DRAM clocks
+ *
+ * SAR[15] : TCLK frequency
+ * 0 = 250 MHz
+ * 1 = 200 MHz
+ */
+
+#define SAR_A380_TCLK_FREQ_OPT 15
+#define SAR_A380_TCLK_FREQ_OPT_MASK 0x1
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT 10
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+
+static const u32 armada_38x_tclk_frequencies[] __initconst = {
+ 250000000,
+ 200000000,
+};
+
+static u32 __init armada_38x_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar) >> SAR_A380_TCLK_FREQ_OPT) &
+ SAR_A380_TCLK_FREQ_OPT_MASK);
+ return armada_38x_tclk_frequencies[tclk_freq_select];
+}
+
+static const u32 armada_38x_cpu_frequencies[] __initconst = {
+ 0, 0, 0, 0,
+ 1066 * 1000 * 1000, 0, 0, 0,
+ 1332 * 1000 * 1000, 0, 0, 0,
+ 1600 * 1000 * 1000,
+};
+
+static u32 __init armada_38x_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_38x_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ }
+
+ return armada_38x_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A380_CPU_TO_DDR, A380_CPU_TO_L2 };
+
+static const struct coreclk_ratio armada_38x_coreclk_ratios[] __initconst = {
+ { .id = A380_CPU_TO_L2, .name = "l2clk" },
+ { .id = A380_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_38x_cpu_l2_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_38x_cpu_ddr_ratios[32][2] __initconst = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init armada_38x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A380_CPU_TO_L2:
+ *mult = armada_38x_cpu_l2_ratios[opt][0];
+ *div = armada_38x_cpu_l2_ratios[opt][1];
+ break;
+ case A380_CPU_TO_DDR:
+ *mult = armada_38x_cpu_ddr_ratios[opt][0];
+ *div = armada_38x_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc armada_38x_coreclks = {
+ .get_tclk_freq = armada_38x_get_tclk_freq,
+ .get_cpu_freq = armada_38x_get_cpu_freq,
+ .get_clk_ratio = armada_38x_get_clk_ratio,
+ .ratios = armada_38x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_38x_coreclk_ratios),
+};
+
+static void __init armada_38x_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_38x_coreclks);
+}
+CLK_OF_DECLARE(armada_38x_core_clk, "marvell,armada-380-core-clock",
+ armada_38x_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_38x_gating_desc[] __initconst = {
+ { "audio", NULL, 0 },
+ { "ge2", NULL, 2 },
+ { "ge1", NULL, 3 },
+ { "ge0", NULL, 4 },
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "usb3h1", NULL, 10 },
+ { "usb3d", NULL, 11 },
+ { "bm", NULL, 13 },
+ { "crypto0z", NULL, 14 },
+ { "sata0", NULL, 15 },
+ { "crypto1z", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb2", NULL, 18 },
+ { "crypto1", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "crypto0", NULL, 23 },
+ { "tdm", NULL, 25 },
+ { "xor1", NULL, 28 },
+ { "sata1", NULL, 30 },
+ { }
+};
+
+static void __init armada_38x_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_38x_gating_desc);
+}
+CLK_OF_DECLARE(armada_38x_clk_gating, "marvell,armada-380-gating-clock",
+ armada_38x_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-39x.c b/drivers/clk/mvebu/armada-39x.c
new file mode 100644
index 000000000..efb974df9
--- /dev/null
+++ b/drivers/clk/mvebu/armada-39x.c
@@ -0,0 +1,156 @@
+/*
+ * Marvell Armada 39x SoC clocks
+ *
+ * Copyright (C) 2015 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * SARL[14:10] : Ratios between CPU, NBCLK, HCLK and DCLK.
+ *
+ * SARL[15] : TCLK frequency
+ * 0 = 250 MHz
+ * 1 = 200 MHz
+ *
+ * SARH[0] : Reference clock frequency
+ * 0 = 25 Mhz
+ * 1 = 40 Mhz
+ */
+
+#define SARL 0
+#define SARL_A390_TCLK_FREQ_OPT 15
+#define SARL_A390_TCLK_FREQ_OPT_MASK 0x1
+#define SARL_A390_CPU_DDR_L2_FREQ_OPT 10
+#define SARL_A390_CPU_DDR_L2_FREQ_OPT_MASK 0x1F
+#define SARH 4
+#define SARH_A390_REFCLK_FREQ BIT(0)
+
+static const u32 armada_39x_tclk_frequencies[] __initconst = {
+ 250000000,
+ 200000000,
+};
+
+static u32 __init armada_39x_get_tclk_freq(void __iomem *sar)
+{
+ u8 tclk_freq_select;
+
+ tclk_freq_select = ((readl(sar + SARL) >> SARL_A390_TCLK_FREQ_OPT) &
+ SARL_A390_TCLK_FREQ_OPT_MASK);
+ return armada_39x_tclk_frequencies[tclk_freq_select];
+}
+
+static const u32 armada_39x_cpu_frequencies[] __initconst = {
+ [0x0] = 666 * 1000 * 1000,
+ [0x2] = 800 * 1000 * 1000,
+ [0x3] = 800 * 1000 * 1000,
+ [0x4] = 1066 * 1000 * 1000,
+ [0x5] = 1066 * 1000 * 1000,
+ [0x6] = 1200 * 1000 * 1000,
+ [0x8] = 1332 * 1000 * 1000,
+ [0xB] = 1600 * 1000 * 1000,
+ [0xC] = 1600 * 1000 * 1000,
+ [0x12] = 1800 * 1000 * 1000,
+ [0x1E] = 1800 * 1000 * 1000,
+};
+
+static u32 __init armada_39x_get_cpu_freq(void __iomem *sar)
+{
+ u8 cpu_freq_select;
+
+ cpu_freq_select = ((readl(sar + SARL) >> SARL_A390_CPU_DDR_L2_FREQ_OPT) &
+ SARL_A390_CPU_DDR_L2_FREQ_OPT_MASK);
+ if (cpu_freq_select >= ARRAY_SIZE(armada_39x_cpu_frequencies)) {
+ pr_err("Selected CPU frequency (%d) unsupported\n",
+ cpu_freq_select);
+ return 0;
+ }
+
+ return armada_39x_cpu_frequencies[cpu_freq_select];
+}
+
+enum { A390_CPU_TO_NBCLK, A390_CPU_TO_HCLK, A390_CPU_TO_DCLK };
+
+static const struct coreclk_ratio armada_39x_coreclk_ratios[] __initconst = {
+ { .id = A390_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = A390_CPU_TO_HCLK, .name = "hclk" },
+ { .id = A390_CPU_TO_DCLK, .name = "dclk" },
+};
+
+static void __init armada_39x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case A390_CPU_TO_NBCLK:
+ *mult = 1;
+ *div = 2;
+ break;
+ case A390_CPU_TO_HCLK:
+ *mult = 1;
+ *div = 4;
+ break;
+ case A390_CPU_TO_DCLK:
+ *mult = 1;
+ *div = 2;
+ break;
+ }
+}
+
+static u32 __init armada_39x_refclk_ratio(void __iomem *sar)
+{
+ if (readl(sar + SARH) & SARH_A390_REFCLK_FREQ)
+ return 40 * 1000 * 1000;
+ else
+ return 25 * 1000 * 1000;
+}
+
+static const struct coreclk_soc_desc armada_39x_coreclks = {
+ .get_tclk_freq = armada_39x_get_tclk_freq,
+ .get_cpu_freq = armada_39x_get_cpu_freq,
+ .get_clk_ratio = armada_39x_get_clk_ratio,
+ .get_refclk_freq = armada_39x_refclk_ratio,
+ .ratios = armada_39x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(armada_39x_coreclk_ratios),
+};
+
+static void __init armada_39x_coreclk_init(struct device_node *np)
+{
+ mvebu_coreclk_setup(np, &armada_39x_coreclks);
+}
+CLK_OF_DECLARE(armada_39x_core_clk, "marvell,armada-390-core-clock",
+ armada_39x_coreclk_init);
+
+/*
+ * Clock Gating Control
+ */
+static const struct clk_gating_soc_desc armada_39x_gating_desc[] __initconst = {
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "sdio", NULL, 17 },
+ { "xor0", NULL, 22 },
+ { "xor1", NULL, 28 },
+ { }
+};
+
+static void __init armada_39x_clk_gating_init(struct device_node *np)
+{
+ mvebu_clk_gating_setup(np, armada_39x_gating_desc);
+}
+CLK_OF_DECLARE(armada_39x_clk_gating, "marvell,armada-390-gating-clock",
+ armada_39x_clk_gating_init);
diff --git a/drivers/clk/mvebu/armada-xp.c b/drivers/clk/mvebu/armada-xp.c
new file mode 100644
index 000000000..b3094315a
--- /dev/null
+++ b/drivers/clk/mvebu/armada-xp.c
@@ -0,0 +1,208 @@
+/*
+ * Marvell Armada XP SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Armada XP Sample At Reset is a 64 bit bitfiled split in two
+ * register of 32 bits
+ */
+
+#define SARL 0 /* Low part [0:31] */
+#define SARL_AXP_PCLK_FREQ_OPT 21
+#define SARL_AXP_PCLK_FREQ_OPT_MASK 0x7
+#define SARL_AXP_FAB_FREQ_OPT 24
+#define SARL_AXP_FAB_FREQ_OPT_MASK 0xF
+#define SARH 4 /* High part [32:63] */
+#define SARH_AXP_PCLK_FREQ_OPT (52-32)
+#define SARH_AXP_PCLK_FREQ_OPT_MASK 0x1
+#define SARH_AXP_PCLK_FREQ_OPT_SHIFT 3
+#define SARH_AXP_FAB_FREQ_OPT (51-32)
+#define SARH_AXP_FAB_FREQ_OPT_MASK 0x1
+#define SARH_AXP_FAB_FREQ_OPT_SHIFT 4
+
+enum { AXP_CPU_TO_NBCLK, AXP_CPU_TO_HCLK, AXP_CPU_TO_DRAMCLK };
+
+static const struct coreclk_ratio axp_coreclk_ratios[] __initconst = {
+ { .id = AXP_CPU_TO_NBCLK, .name = "nbclk" },
+ { .id = AXP_CPU_TO_HCLK, .name = "hclk" },
+ { .id = AXP_CPU_TO_DRAMCLK, .name = "dramclk" },
+};
+
+/* Armada XP TCLK frequency is fixed to 250MHz */
+static u32 __init axp_get_tclk_freq(void __iomem *sar)
+{
+ return 250000000;
+}
+
+static const u32 axp_cpu_freqs[] __initconst = {
+ 1000000000,
+ 1066000000,
+ 1200000000,
+ 1333000000,
+ 1500000000,
+ 1666000000,
+ 1800000000,
+ 2000000000,
+ 667000000,
+ 0,
+ 800000000,
+ 1600000000,
+};
+
+static u32 __init axp_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq;
+ u8 cpu_freq_select = 0;
+
+ cpu_freq_select = ((readl(sar + SARL) >> SARL_AXP_PCLK_FREQ_OPT) &
+ SARL_AXP_PCLK_FREQ_OPT_MASK);
+ /*
+ * The upper bit is not contiguous to the other ones and
+ * located in the high part of the SAR registers
+ */
+ cpu_freq_select |= (((readl(sar + SARH) >> SARH_AXP_PCLK_FREQ_OPT) &
+ SARH_AXP_PCLK_FREQ_OPT_MASK) << SARH_AXP_PCLK_FREQ_OPT_SHIFT);
+ if (cpu_freq_select >= ARRAY_SIZE(axp_cpu_freqs)) {
+ pr_err("CPU freq select unsupported: %d\n", cpu_freq_select);
+ cpu_freq = 0;
+ } else
+ cpu_freq = axp_cpu_freqs[cpu_freq_select];
+
+ return cpu_freq;
+}
+
+static const int axp_nbclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 2}, {2, 2},
+ {1, 2}, {1, 2}, {1, 1}, {2, 3},
+ {0, 1}, {1, 2}, {2, 4}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {2, 2},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int axp_hclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 6}, {2, 3},
+ {1, 3}, {1, 4}, {1, 2}, {2, 6},
+ {0, 1}, {1, 6}, {2, 10}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 2},
+ {2, 6}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int axp_dramclk_ratios[32][2] __initconst = {
+ {0, 1}, {1, 2}, {2, 3}, {2, 3},
+ {1, 3}, {1, 2}, {1, 2}, {2, 6},
+ {0, 1}, {1, 3}, {2, 5}, {0, 1},
+ {1, 4}, {0, 1}, {0, 1}, {2, 5},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {2, 3}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {1, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void __init axp_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar + SARL) >> SARL_AXP_FAB_FREQ_OPT) &
+ SARL_AXP_FAB_FREQ_OPT_MASK);
+ /*
+ * The upper bit is not contiguous to the other ones and
+ * located in the high part of the SAR registers
+ */
+ opt |= (((readl(sar + SARH) >> SARH_AXP_FAB_FREQ_OPT) &
+ SARH_AXP_FAB_FREQ_OPT_MASK) << SARH_AXP_FAB_FREQ_OPT_SHIFT);
+
+ switch (id) {
+ case AXP_CPU_TO_NBCLK:
+ *mult = axp_nbclk_ratios[opt][0];
+ *div = axp_nbclk_ratios[opt][1];
+ break;
+ case AXP_CPU_TO_HCLK:
+ *mult = axp_hclk_ratios[opt][0];
+ *div = axp_hclk_ratios[opt][1];
+ break;
+ case AXP_CPU_TO_DRAMCLK:
+ *mult = axp_dramclk_ratios[opt][0];
+ *div = axp_dramclk_ratios[opt][1];
+ break;
+ }
+}
+
+static const struct coreclk_soc_desc axp_coreclks = {
+ .get_tclk_freq = axp_get_tclk_freq,
+ .get_cpu_freq = axp_get_cpu_freq,
+ .get_clk_ratio = axp_get_clk_ratio,
+ .ratios = axp_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(axp_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc axp_gating_desc[] __initconst = {
+ { "audio", NULL, 0, 0 },
+ { "ge3", NULL, 1, 0 },
+ { "ge2", NULL, 2, 0 },
+ { "ge1", NULL, 3, 0 },
+ { "ge0", NULL, 4, 0 },
+ { "pex00", NULL, 5, 0 },
+ { "pex01", NULL, 6, 0 },
+ { "pex02", NULL, 7, 0 },
+ { "pex03", NULL, 8, 0 },
+ { "pex10", NULL, 9, 0 },
+ { "pex11", NULL, 10, 0 },
+ { "pex12", NULL, 11, 0 },
+ { "pex13", NULL, 12, 0 },
+ { "bp", NULL, 13, 0 },
+ { "sata0lnk", NULL, 14, 0 },
+ { "sata0", "sata0lnk", 15, 0 },
+ { "lcd", NULL, 16, 0 },
+ { "sdio", NULL, 17, 0 },
+ { "usb0", NULL, 18, 0 },
+ { "usb1", NULL, 19, 0 },
+ { "usb2", NULL, 20, 0 },
+ { "xor0", NULL, 22, 0 },
+ { "crypto", NULL, 23, 0 },
+ { "tdm", NULL, 25, 0 },
+ { "pex20", NULL, 26, 0 },
+ { "pex30", NULL, 27, 0 },
+ { "xor1", NULL, 28, 0 },
+ { "sata1lnk", NULL, 29, 0 },
+ { "sata1", "sata1lnk", 30, 0 },
+ { }
+};
+
+static void __init axp_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,armada-xp-gating-clock");
+
+ mvebu_coreclk_setup(np, &axp_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, axp_gating_desc);
+}
+CLK_OF_DECLARE(axp_clk, "marvell,armada-xp-core-clock", axp_clk_init);
diff --git a/drivers/clk/mvebu/clk-corediv.c b/drivers/clk/mvebu/clk-corediv.c
new file mode 100644
index 000000000..d1e5863d3
--- /dev/null
+++ b/drivers/clk/mvebu/clk-corediv.c
@@ -0,0 +1,315 @@
+/*
+ * MVEBU Core divider clock
+ *
+ * Copyright (C) 2013 Marvell
+ *
+ * Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include "common.h"
+
+#define CORE_CLK_DIV_RATIO_MASK 0xff
+
+/*
+ * This structure describes the hardware details (bit offset and mask)
+ * to configure one particular core divider clock. Those hardware
+ * details may differ from one SoC to another. This structure is
+ * therefore typically instantiated statically to describe the
+ * hardware details.
+ */
+struct clk_corediv_desc {
+ unsigned int mask;
+ unsigned int offset;
+ unsigned int fieldbit;
+};
+
+/*
+ * This structure describes the hardware details to configure the core
+ * divider clocks on a given SoC. Amongst others, it points to the
+ * array of core divider clock descriptors for this SoC, as well as
+ * the corresponding operations to manipulate them.
+ */
+struct clk_corediv_soc_desc {
+ const struct clk_corediv_desc *descs;
+ unsigned int ndescs;
+ const struct clk_ops ops;
+ u32 ratio_reload;
+ u32 enable_bit_offset;
+ u32 ratio_offset;
+};
+
+/*
+ * This structure represents one core divider clock for the clock
+ * framework, and is dynamically allocated for each core divider clock
+ * existing in the current SoC.
+ */
+struct clk_corediv {
+ struct clk_hw hw;
+ void __iomem *reg;
+ const struct clk_corediv_desc *desc;
+ const struct clk_corediv_soc_desc *soc_desc;
+ spinlock_t lock;
+};
+
+static struct clk_onecell_data clk_data;
+
+/*
+ * Description of the core divider clocks available. For now, we
+ * support only NAND, and it is available at the same register
+ * locations regardless of the SoC.
+ */
+static const struct clk_corediv_desc mvebu_corediv_desc[] = {
+ { .mask = 0x3f, .offset = 8, .fieldbit = 1 }, /* NAND clock */
+};
+
+#define to_corediv_clk(p) container_of(p, struct clk_corediv, hw)
+
+static int clk_corediv_is_enabled(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ u32 enable_mask = BIT(desc->fieldbit) << soc_desc->enable_bit_offset;
+
+ return !!(readl(corediv->reg) & enable_mask);
+}
+
+static int clk_corediv_enable(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ reg = readl(corediv->reg);
+ reg |= (BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
+ writel(reg, corediv->reg);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+
+ return 0;
+}
+
+static void clk_corediv_disable(struct clk_hw *hwclk)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ reg = readl(corediv->reg);
+ reg &= ~(BIT(desc->fieldbit) << soc_desc->enable_bit_offset);
+ writel(reg, corediv->reg);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+}
+
+static unsigned long clk_corediv_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ u32 reg, div;
+
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
+ div = (reg >> desc->offset) & desc->mask;
+ return parent_rate / div;
+}
+
+static long clk_corediv_round_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ /* Valid ratio are 1:4, 1:5, 1:6 and 1:8 */
+ u32 div;
+
+ div = *parent_rate / rate;
+ if (div < 4)
+ div = 4;
+ else if (div > 6)
+ div = 8;
+
+ return *parent_rate / div;
+}
+
+static int clk_corediv_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_corediv *corediv = to_corediv_clk(hwclk);
+ const struct clk_corediv_soc_desc *soc_desc = corediv->soc_desc;
+ const struct clk_corediv_desc *desc = corediv->desc;
+ unsigned long flags = 0;
+ u32 reg, div;
+
+ div = parent_rate / rate;
+
+ spin_lock_irqsave(&corediv->lock, flags);
+
+ /* Write new divider to the divider ratio register */
+ reg = readl(corediv->reg + soc_desc->ratio_offset);
+ reg &= ~(desc->mask << desc->offset);
+ reg |= (div & desc->mask) << desc->offset;
+ writel(reg, corediv->reg + soc_desc->ratio_offset);
+
+ /* Set reload-force for this clock */
+ reg = readl(corediv->reg) | BIT(desc->fieldbit);
+ writel(reg, corediv->reg);
+
+ /* Now trigger the clock update */
+ reg = readl(corediv->reg) | soc_desc->ratio_reload;
+ writel(reg, corediv->reg);
+
+ /*
+ * Wait for clocks to settle down, and then clear all the
+ * ratios request and the reload request.
+ */
+ udelay(1000);
+ reg &= ~(CORE_CLK_DIV_RATIO_MASK | soc_desc->ratio_reload);
+ writel(reg, corediv->reg);
+ udelay(1000);
+
+ spin_unlock_irqrestore(&corediv->lock, flags);
+
+ return 0;
+}
+
+static const struct clk_corediv_soc_desc armada370_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 24,
+ .ratio_offset = 0x8,
+};
+
+static const struct clk_corediv_soc_desc armada380_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .enable = clk_corediv_enable,
+ .disable = clk_corediv_disable,
+ .is_enabled = clk_corediv_is_enabled,
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .enable_bit_offset = 16,
+ .ratio_offset = 0x4,
+};
+
+static const struct clk_corediv_soc_desc armada375_corediv_soc = {
+ .descs = mvebu_corediv_desc,
+ .ndescs = ARRAY_SIZE(mvebu_corediv_desc),
+ .ops = {
+ .recalc_rate = clk_corediv_recalc_rate,
+ .round_rate = clk_corediv_round_rate,
+ .set_rate = clk_corediv_set_rate,
+ },
+ .ratio_reload = BIT(8),
+ .ratio_offset = 0x4,
+};
+
+static void __init
+mvebu_corediv_clk_init(struct device_node *node,
+ const struct clk_corediv_soc_desc *soc_desc)
+{
+ struct clk_init_data init;
+ struct clk_corediv *corediv;
+ struct clk **clks;
+ void __iomem *base;
+ const char *parent_name;
+ const char *clk_name;
+ int i;
+
+ base = of_iomap(node, 0);
+ if (WARN_ON(!base))
+ return;
+
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ clk_data.clk_num = soc_desc->ndescs;
+
+ /* clks holds the clock array */
+ clks = kcalloc(clk_data.clk_num, sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!clks))
+ goto err_unmap;
+ /* corediv holds the clock specific array */
+ corediv = kcalloc(clk_data.clk_num, sizeof(struct clk_corediv),
+ GFP_KERNEL);
+ if (WARN_ON(!corediv))
+ goto err_free_clks;
+
+ spin_lock_init(&corediv->lock);
+
+ for (i = 0; i < clk_data.clk_num; i++) {
+ of_property_read_string_index(node, "clock-output-names",
+ i, &clk_name);
+ init.num_parents = 1;
+ init.parent_names = &parent_name;
+ init.name = clk_name;
+ init.ops = &soc_desc->ops;
+ init.flags = 0;
+
+ corediv[i].soc_desc = soc_desc;
+ corediv[i].desc = soc_desc->descs + i;
+ corediv[i].reg = base;
+ corediv[i].hw.init = &init;
+
+ clks[i] = clk_register(NULL, &corediv[i].hw);
+ WARN_ON(IS_ERR(clks[i]));
+ }
+
+ clk_data.clks = clks;
+ of_clk_add_provider(node, of_clk_src_onecell_get, &clk_data);
+ return;
+
+err_free_clks:
+ kfree(clks);
+err_unmap:
+ iounmap(base);
+}
+
+static void __init armada370_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada370_corediv_soc);
+}
+CLK_OF_DECLARE(armada370_corediv_clk, "marvell,armada-370-corediv-clock",
+ armada370_corediv_clk_init);
+
+static void __init armada375_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada375_corediv_soc);
+}
+CLK_OF_DECLARE(armada375_corediv_clk, "marvell,armada-375-corediv-clock",
+ armada375_corediv_clk_init);
+
+static void __init armada380_corediv_clk_init(struct device_node *node)
+{
+ return mvebu_corediv_clk_init(node, &armada380_corediv_soc);
+}
+CLK_OF_DECLARE(armada380_corediv_clk, "marvell,armada-380-corediv-clock",
+ armada380_corediv_clk_init);
diff --git a/drivers/clk/mvebu/clk-cpu.c b/drivers/clk/mvebu/clk-cpu.c
new file mode 100644
index 000000000..3821a8807
--- /dev/null
+++ b/drivers/clk/mvebu/clk-cpu.c
@@ -0,0 +1,248 @@
+/*
+ * Marvell MVEBU CPU clock handling.
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/delay.h>
+#include <linux/mvebu-pmsu.h>
+#include <asm/smp_plat.h>
+
+#define SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET 0x0
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL 0xff
+#define SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT 8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET 0x8
+#define SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT 16
+#define SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET 0xC
+#define SYS_CTRL_CLK_DIVIDER_MASK 0x3F
+
+#define PMU_DFS_RATIO_SHIFT 16
+#define PMU_DFS_RATIO_MASK 0x3F
+
+#define MAX_CPU 4
+struct cpu_clk {
+ struct clk_hw hw;
+ int cpu;
+ const char *clk_name;
+ const char *parent_name;
+ void __iomem *reg_base;
+ void __iomem *pmu_dfs;
+};
+
+static struct clk **clks;
+
+static struct clk_onecell_data clk_data;
+
+#define to_cpu_clk(p) container_of(p, struct cpu_clk, hw)
+
+static unsigned long clk_cpu_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+ u32 reg, div;
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET);
+ div = (reg >> (cpuclk->cpu * 8)) & SYS_CTRL_CLK_DIVIDER_MASK;
+ return parent_rate / div;
+}
+
+static long clk_cpu_round_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ /* Valid ratio are 1:1, 1:2 and 1:3 */
+ u32 div;
+
+ div = *parent_rate / rate;
+ if (div == 0)
+ div = 1;
+ else if (div > 3)
+ div = 3;
+
+ return *parent_rate / div;
+}
+
+static int clk_cpu_off_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+
+{
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+ u32 reg, div;
+ u32 reload_mask;
+
+ div = parent_rate / rate;
+ reg = (readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET)
+ & (~(SYS_CTRL_CLK_DIVIDER_MASK << (cpuclk->cpu * 8))))
+ | (div << (cpuclk->cpu * 8));
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_VALUE_OFFSET);
+ /* Set clock divider reload smooth bit mask */
+ reload_mask = 1 << (20 + cpuclk->cpu);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET)
+ | reload_mask;
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ /* Now trigger the clock update */
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET)
+ | 1 << 24;
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ /* Wait for clocks to settle down then clear reload request */
+ udelay(1000);
+ reg &= ~(reload_mask | 1 << 24);
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+ udelay(1000);
+
+ return 0;
+}
+
+static int clk_cpu_on_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ u32 reg;
+ unsigned long fabric_div, target_div, cur_rate;
+ struct cpu_clk *cpuclk = to_cpu_clk(hwclk);
+
+ /*
+ * PMU DFS registers are not mapped, Device Tree does not
+ * describes them. We cannot change the frequency dynamically.
+ */
+ if (!cpuclk->pmu_dfs)
+ return -ENODEV;
+
+ cur_rate = __clk_get_rate(hwclk->clk);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL2_OFFSET);
+ fabric_div = (reg >> SYS_CTRL_CLK_DIVIDER_CTRL2_NBCLK_RATIO_SHIFT) &
+ SYS_CTRL_CLK_DIVIDER_MASK;
+
+ /* Frequency is going up */
+ if (rate == 2 * cur_rate)
+ target_div = fabric_div / 2;
+ /* Frequency is going down */
+ else
+ target_div = fabric_div;
+
+ if (target_div == 0)
+ target_div = 1;
+
+ reg = readl(cpuclk->pmu_dfs);
+ reg &= ~(PMU_DFS_RATIO_MASK << PMU_DFS_RATIO_SHIFT);
+ reg |= (target_div << PMU_DFS_RATIO_SHIFT);
+ writel(reg, cpuclk->pmu_dfs);
+
+ reg = readl(cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+ reg |= (SYS_CTRL_CLK_DIVIDER_CTRL_RESET_ALL <<
+ SYS_CTRL_CLK_DIVIDER_CTRL_RESET_SHIFT);
+ writel(reg, cpuclk->reg_base + SYS_CTRL_CLK_DIVIDER_CTRL_OFFSET);
+
+ return mvebu_pmsu_dfs_request(cpuclk->cpu);
+}
+
+static int clk_cpu_set_rate(struct clk_hw *hwclk, unsigned long rate,
+ unsigned long parent_rate)
+{
+ if (__clk_is_enabled(hwclk->clk))
+ return clk_cpu_on_set_rate(hwclk, rate, parent_rate);
+ else
+ return clk_cpu_off_set_rate(hwclk, rate, parent_rate);
+}
+
+static const struct clk_ops cpu_ops = {
+ .recalc_rate = clk_cpu_recalc_rate,
+ .round_rate = clk_cpu_round_rate,
+ .set_rate = clk_cpu_set_rate,
+};
+
+static void __init of_cpu_clk_setup(struct device_node *node)
+{
+ struct cpu_clk *cpuclk;
+ void __iomem *clock_complex_base = of_iomap(node, 0);
+ void __iomem *pmu_dfs_base = of_iomap(node, 1);
+ int ncpus = 0;
+ struct device_node *dn;
+
+ if (clock_complex_base == NULL) {
+ pr_err("%s: clock-complex base register not set\n",
+ __func__);
+ return;
+ }
+
+ if (pmu_dfs_base == NULL)
+ pr_warn("%s: pmu-dfs base register not set, dynamic frequency scaling not available\n",
+ __func__);
+
+ for_each_node_by_type(dn, "cpu")
+ ncpus++;
+
+ cpuclk = kzalloc(ncpus * sizeof(*cpuclk), GFP_KERNEL);
+ if (WARN_ON(!cpuclk))
+ goto cpuclk_out;
+
+ clks = kzalloc(ncpus * sizeof(*clks), GFP_KERNEL);
+ if (WARN_ON(!clks))
+ goto clks_out;
+
+ for_each_node_by_type(dn, "cpu") {
+ struct clk_init_data init;
+ struct clk *clk;
+ struct clk *parent_clk;
+ char *clk_name = kzalloc(5, GFP_KERNEL);
+ int cpu, err;
+
+ if (WARN_ON(!clk_name))
+ goto bail_out;
+
+ err = of_property_read_u32(dn, "reg", &cpu);
+ if (WARN_ON(err))
+ goto bail_out;
+
+ sprintf(clk_name, "cpu%d", cpu);
+ parent_clk = of_clk_get(node, 0);
+
+ cpuclk[cpu].parent_name = __clk_get_name(parent_clk);
+ cpuclk[cpu].clk_name = clk_name;
+ cpuclk[cpu].cpu = cpu;
+ cpuclk[cpu].reg_base = clock_complex_base;
+ if (pmu_dfs_base)
+ cpuclk[cpu].pmu_dfs = pmu_dfs_base + 4 * cpu;
+ cpuclk[cpu].hw.init = &init;
+
+ init.name = cpuclk[cpu].clk_name;
+ init.ops = &cpu_ops;
+ init.flags = 0;
+ init.parent_names = &cpuclk[cpu].parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &cpuclk[cpu].hw);
+ if (WARN_ON(IS_ERR(clk)))
+ goto bail_out;
+ clks[cpu] = clk;
+ }
+ clk_data.clk_num = MAX_CPU;
+ clk_data.clks = clks;
+ of_clk_add_provider(node, of_clk_src_onecell_get, &clk_data);
+
+ return;
+bail_out:
+ kfree(clks);
+ while(ncpus--)
+ kfree(cpuclk[ncpus].clk_name);
+clks_out:
+ kfree(cpuclk);
+cpuclk_out:
+ iounmap(clock_complex_base);
+}
+
+CLK_OF_DECLARE(armada_xp_cpu_clock, "marvell,armada-xp-cpu-clock",
+ of_cpu_clk_setup);
diff --git a/drivers/clk/mvebu/common.c b/drivers/clk/mvebu/common.c
new file mode 100644
index 000000000..15b370ff3
--- /dev/null
+++ b/drivers/clk/mvebu/common.c
@@ -0,0 +1,299 @@
+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/syscore_ops.h>
+
+#include "common.h"
+
+/*
+ * Core Clocks
+ */
+
+#define SSCG_CONF_MODE(reg) (((reg) >> 16) & 0x3)
+#define SSCG_SPREAD_DOWN 0x0
+#define SSCG_SPREAD_UP 0x1
+#define SSCG_SPREAD_CENTRAL 0x2
+#define SSCG_CONF_LOW(reg) (((reg) >> 8) & 0xFF)
+#define SSCG_CONF_HIGH(reg) ((reg) & 0xFF)
+
+static struct clk_onecell_data clk_data;
+
+/*
+ * This function can be used by the Kirkwood, the Armada 370, the
+ * Armada XP and the Armada 375 SoC. The name of the function was
+ * chosen following the dt convention: using the first known SoC
+ * compatible with it.
+ */
+u32 kirkwood_fix_sscg_deviation(u32 system_clk)
+{
+ struct device_node *sscg_np = NULL;
+ void __iomem *sscg_map;
+ u32 sscg_reg;
+ s32 low_bound, high_bound;
+ u64 freq_swing_half;
+
+ sscg_np = of_find_node_by_name(NULL, "sscg");
+ if (sscg_np == NULL) {
+ pr_err("cannot get SSCG register node\n");
+ return system_clk;
+ }
+
+ sscg_map = of_iomap(sscg_np, 0);
+ if (sscg_map == NULL) {
+ pr_err("cannot map SSCG register\n");
+ goto out;
+ }
+
+ sscg_reg = readl(sscg_map);
+ high_bound = SSCG_CONF_HIGH(sscg_reg);
+ low_bound = SSCG_CONF_LOW(sscg_reg);
+
+ if ((high_bound - low_bound) <= 0)
+ goto out;
+ /*
+ * From Marvell engineer we got the following formula (when
+ * this code was written, the datasheet was erroneous)
+ * Spread percentage = 1/96 * (H - L) / H
+ * H = SSCG_High_Boundary
+ * L = SSCG_Low_Boundary
+ *
+ * As the deviation is half of spread then it lead to the
+ * following formula in the code.
+ *
+ * To avoid an overflow and not lose any significant digit in
+ * the same time we have to use a 64 bit integer.
+ */
+
+ freq_swing_half = (((u64)high_bound - (u64)low_bound)
+ * (u64)system_clk);
+ do_div(freq_swing_half, (2 * 96 * high_bound));
+
+ switch (SSCG_CONF_MODE(sscg_reg)) {
+ case SSCG_SPREAD_DOWN:
+ system_clk -= freq_swing_half;
+ break;
+ case SSCG_SPREAD_UP:
+ system_clk += freq_swing_half;
+ break;
+ case SSCG_SPREAD_CENTRAL:
+ default:
+ break;
+ }
+
+ iounmap(sscg_map);
+
+out:
+ of_node_put(sscg_np);
+
+ return system_clk;
+}
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+ const struct coreclk_soc_desc *desc)
+{
+ const char *tclk_name = "tclk";
+ const char *cpuclk_name = "cpuclk";
+ void __iomem *base;
+ unsigned long rate;
+ int n;
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ /* Allocate struct for TCLK, cpu clk, and core ratio clocks */
+ clk_data.clk_num = 2 + desc->num_ratios;
+
+ /* One more clock for the optional refclk */
+ if (desc->get_refclk_freq)
+ clk_data.clk_num += 1;
+
+ clk_data.clks = kzalloc(clk_data.clk_num * sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!clk_data.clks)) {
+ iounmap(base);
+ return;
+ }
+
+ /* Register TCLK */
+ of_property_read_string_index(np, "clock-output-names", 0,
+ &tclk_name);
+ rate = desc->get_tclk_freq(base);
+ clk_data.clks[0] = clk_register_fixed_rate(NULL, tclk_name, NULL,
+ CLK_IS_ROOT, rate);
+ WARN_ON(IS_ERR(clk_data.clks[0]));
+
+ /* Register CPU clock */
+ of_property_read_string_index(np, "clock-output-names", 1,
+ &cpuclk_name);
+ rate = desc->get_cpu_freq(base);
+
+ if (desc->is_sscg_enabled && desc->fix_sscg_deviation
+ && desc->is_sscg_enabled(base))
+ rate = desc->fix_sscg_deviation(rate);
+
+ clk_data.clks[1] = clk_register_fixed_rate(NULL, cpuclk_name, NULL,
+ CLK_IS_ROOT, rate);
+ WARN_ON(IS_ERR(clk_data.clks[1]));
+
+ /* Register fixed-factor clocks derived from CPU clock */
+ for (n = 0; n < desc->num_ratios; n++) {
+ const char *rclk_name = desc->ratios[n].name;
+ int mult, div;
+
+ of_property_read_string_index(np, "clock-output-names",
+ 2+n, &rclk_name);
+ desc->get_clk_ratio(base, desc->ratios[n].id, &mult, &div);
+ clk_data.clks[2+n] = clk_register_fixed_factor(NULL, rclk_name,
+ cpuclk_name, 0, mult, div);
+ WARN_ON(IS_ERR(clk_data.clks[2+n]));
+ };
+
+ /* Register optional refclk */
+ if (desc->get_refclk_freq) {
+ const char *name = "refclk";
+ of_property_read_string_index(np, "clock-output-names",
+ 2 + desc->num_ratios, &name);
+ rate = desc->get_refclk_freq(base);
+ clk_data.clks[2 + desc->num_ratios] =
+ clk_register_fixed_rate(NULL, name, NULL,
+ CLK_IS_ROOT, rate);
+ WARN_ON(IS_ERR(clk_data.clks[2 + desc->num_ratios]));
+ }
+
+ /* SAR register isn't needed anymore */
+ iounmap(base);
+
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+}
+
+/*
+ * Clock Gating Control
+ */
+
+DEFINE_SPINLOCK(ctrl_gating_lock);
+
+struct clk_gating_ctrl {
+ spinlock_t *lock;
+ struct clk **gates;
+ int num_gates;
+ void __iomem *base;
+ u32 saved_reg;
+};
+
+#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)
+
+static struct clk_gating_ctrl *ctrl;
+
+static struct clk *clk_gating_get_src(
+ struct of_phandle_args *clkspec, void *data)
+{
+ int n;
+
+ if (clkspec->args_count < 1)
+ return ERR_PTR(-EINVAL);
+
+ for (n = 0; n < ctrl->num_gates; n++) {
+ struct clk_gate *gate =
+ to_clk_gate(__clk_get_hw(ctrl->gates[n]));
+ if (clkspec->args[0] == gate->bit_idx)
+ return ctrl->gates[n];
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static int mvebu_clk_gating_suspend(void)
+{
+ ctrl->saved_reg = readl(ctrl->base);
+ return 0;
+}
+
+static void mvebu_clk_gating_resume(void)
+{
+ writel(ctrl->saved_reg, ctrl->base);
+}
+
+static struct syscore_ops clk_gate_syscore_ops = {
+ .suspend = mvebu_clk_gating_suspend,
+ .resume = mvebu_clk_gating_resume,
+};
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+ const struct clk_gating_soc_desc *desc)
+{
+ struct clk *clk;
+ void __iomem *base;
+ const char *default_parent = NULL;
+ int n;
+
+ if (ctrl) {
+ pr_err("mvebu-clk-gating: cannot instantiate more than one gatable clock device\n");
+ return;
+ }
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ clk = of_clk_get(np, 0);
+ if (!IS_ERR(clk)) {
+ default_parent = __clk_get_name(clk);
+ clk_put(clk);
+ }
+
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (WARN_ON(!ctrl))
+ goto ctrl_out;
+
+ /* lock must already be initialized */
+ ctrl->lock = &ctrl_gating_lock;
+
+ ctrl->base = base;
+
+ /* Count, allocate, and register clock gates */
+ for (n = 0; desc[n].name;)
+ n++;
+
+ ctrl->num_gates = n;
+ ctrl->gates = kzalloc(ctrl->num_gates * sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!ctrl->gates))
+ goto gates_out;
+
+ for (n = 0; n < ctrl->num_gates; n++) {
+ const char *parent =
+ (desc[n].parent) ? desc[n].parent : default_parent;
+ ctrl->gates[n] = clk_register_gate(NULL, desc[n].name, parent,
+ desc[n].flags, base, desc[n].bit_idx,
+ 0, ctrl->lock);
+ WARN_ON(IS_ERR(ctrl->gates[n]));
+ }
+
+ of_clk_add_provider(np, clk_gating_get_src, ctrl);
+
+ register_syscore_ops(&clk_gate_syscore_ops);
+
+ return;
+gates_out:
+ kfree(ctrl);
+ctrl_out:
+ iounmap(base);
+}
diff --git a/drivers/clk/mvebu/common.h b/drivers/clk/mvebu/common.h
new file mode 100644
index 000000000..f0de6c8a4
--- /dev/null
+++ b/drivers/clk/mvebu/common.h
@@ -0,0 +1,58 @@
+/*
+ * Marvell EBU SoC common clock handling
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __CLK_MVEBU_COMMON_H_
+#define __CLK_MVEBU_COMMON_H_
+
+#include <linux/kernel.h>
+
+extern spinlock_t ctrl_gating_lock;
+
+struct device_node;
+
+struct coreclk_ratio {
+ int id;
+ const char *name;
+};
+
+struct coreclk_soc_desc {
+ u32 (*get_tclk_freq)(void __iomem *sar);
+ u32 (*get_cpu_freq)(void __iomem *sar);
+ void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
+ u32 (*get_refclk_freq)(void __iomem *sar);
+ bool (*is_sscg_enabled)(void __iomem *sar);
+ u32 (*fix_sscg_deviation)(u32 system_clk);
+ const struct coreclk_ratio *ratios;
+ int num_ratios;
+};
+
+struct clk_gating_soc_desc {
+ const char *name;
+ const char *parent;
+ int bit_idx;
+ unsigned long flags;
+};
+
+void __init mvebu_coreclk_setup(struct device_node *np,
+ const struct coreclk_soc_desc *desc);
+
+void __init mvebu_clk_gating_setup(struct device_node *np,
+ const struct clk_gating_soc_desc *desc);
+
+/*
+ * This function is shared among the Kirkwood, Armada 370, Armada XP
+ * and Armada 375 SoC
+ */
+u32 kirkwood_fix_sscg_deviation(u32 system_clk);
+#endif
diff --git a/drivers/clk/mvebu/dove.c b/drivers/clk/mvebu/dove.c
new file mode 100644
index 000000000..b8c2424ac
--- /dev/null
+++ b/drivers/clk/mvebu/dove.c
@@ -0,0 +1,193 @@
+/*
+ * Marvell Dove SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Dove PLL sample-at-reset configuration
+ *
+ * SAR0[8:5] : CPU frequency
+ * 5 = 1000 MHz
+ * 6 = 933 MHz
+ * 7 = 933 MHz
+ * 8 = 800 MHz
+ * 9 = 800 MHz
+ * 10 = 800 MHz
+ * 11 = 1067 MHz
+ * 12 = 667 MHz
+ * 13 = 533 MHz
+ * 14 = 400 MHz
+ * 15 = 333 MHz
+ * others reserved.
+ *
+ * SAR0[11:9] : CPU to L2 Clock divider ratio
+ * 0 = (1/1) * CPU
+ * 2 = (1/2) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * others reserved.
+ *
+ * SAR0[15:12] : CPU to DDR DRAM Clock divider ratio
+ * 0 = (1/1) * CPU
+ * 2 = (1/2) * CPU
+ * 3 = (2/5) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * 8 = (1/5) * CPU
+ * 10 = (1/6) * CPU
+ * 12 = (1/7) * CPU
+ * 14 = (1/8) * CPU
+ * 15 = (1/10) * CPU
+ * others reserved.
+ *
+ * SAR0[24:23] : TCLK frequency
+ * 0 = 166 MHz
+ * 1 = 125 MHz
+ * others reserved.
+ */
+
+#define SAR_DOVE_CPU_FREQ 5
+#define SAR_DOVE_CPU_FREQ_MASK 0xf
+#define SAR_DOVE_L2_RATIO 9
+#define SAR_DOVE_L2_RATIO_MASK 0x7
+#define SAR_DOVE_DDR_RATIO 12
+#define SAR_DOVE_DDR_RATIO_MASK 0xf
+#define SAR_DOVE_TCLK_FREQ 23
+#define SAR_DOVE_TCLK_FREQ_MASK 0x3
+
+enum { DOVE_CPU_TO_L2, DOVE_CPU_TO_DDR };
+
+static const struct coreclk_ratio dove_coreclk_ratios[] __initconst = {
+ { .id = DOVE_CPU_TO_L2, .name = "l2clk", },
+ { .id = DOVE_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static const u32 dove_tclk_freqs[] __initconst = {
+ 166666667,
+ 125000000,
+ 0, 0
+};
+
+static u32 __init dove_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_DOVE_TCLK_FREQ) &
+ SAR_DOVE_TCLK_FREQ_MASK;
+ return dove_tclk_freqs[opt];
+}
+
+static const u32 dove_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0, 0,
+ 1000000000,
+ 933333333, 933333333,
+ 800000000, 800000000, 800000000,
+ 1066666667,
+ 666666667,
+ 533333333,
+ 400000000,
+ 333333333
+};
+
+static u32 __init dove_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_DOVE_CPU_FREQ) &
+ SAR_DOVE_CPU_FREQ_MASK;
+ return dove_cpu_freqs[opt];
+}
+
+static const int dove_cpu_l2_ratios[8][2] __initconst = {
+ { 1, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 }
+};
+
+static const int dove_cpu_ddr_ratios[16][2] __initconst = {
+ { 1, 1 }, { 0, 1 }, { 1, 2 }, { 2, 5 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 0, 1 },
+ { 1, 5 }, { 0, 1 }, { 1, 6 }, { 0, 1 },
+ { 1, 7 }, { 0, 1 }, { 1, 8 }, { 1, 10 }
+};
+
+static void __init dove_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case DOVE_CPU_TO_L2:
+ {
+ u32 opt = (readl(sar) >> SAR_DOVE_L2_RATIO) &
+ SAR_DOVE_L2_RATIO_MASK;
+ *mult = dove_cpu_l2_ratios[opt][0];
+ *div = dove_cpu_l2_ratios[opt][1];
+ break;
+ }
+ case DOVE_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_DOVE_DDR_RATIO) &
+ SAR_DOVE_DDR_RATIO_MASK;
+ *mult = dove_cpu_ddr_ratios[opt][0];
+ *div = dove_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const struct coreclk_soc_desc dove_coreclks = {
+ .get_tclk_freq = dove_get_tclk_freq,
+ .get_cpu_freq = dove_get_cpu_freq,
+ .get_clk_ratio = dove_get_clk_ratio,
+ .ratios = dove_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(dove_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc dove_gating_desc[] __initconst = {
+ { "usb0", NULL, 0, 0 },
+ { "usb1", NULL, 1, 0 },
+ { "ge", "gephy", 2, 0 },
+ { "sata", NULL, 3, 0 },
+ { "pex0", NULL, 4, 0 },
+ { "pex1", NULL, 5, 0 },
+ { "sdio0", NULL, 8, 0 },
+ { "sdio1", NULL, 9, 0 },
+ { "nand", NULL, 10, 0 },
+ { "camera", NULL, 11, 0 },
+ { "i2s0", NULL, 12, 0 },
+ { "i2s1", NULL, 13, 0 },
+ { "crypto", NULL, 15, 0 },
+ { "ac97", NULL, 21, 0 },
+ { "pdma", NULL, 22, 0 },
+ { "xor0", NULL, 23, 0 },
+ { "xor1", NULL, 24, 0 },
+ { "gephy", NULL, 30, 0 },
+ { }
+};
+
+static void __init dove_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,dove-gating-clock");
+
+ mvebu_coreclk_setup(np, &dove_coreclks);
+
+ if (cgnp)
+ mvebu_clk_gating_setup(cgnp, dove_gating_desc);
+}
+CLK_OF_DECLARE(dove_clk, "marvell,dove-core-clock", dove_clk_init);
diff --git a/drivers/clk/mvebu/kirkwood.c b/drivers/clk/mvebu/kirkwood.c
new file mode 100644
index 000000000..99550f259
--- /dev/null
+++ b/drivers/clk/mvebu/kirkwood.c
@@ -0,0 +1,343 @@
+/*
+ * Marvell Kirkwood SoC clocks
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
+ * Andrew Lunn <andrew@lunn.ch>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Kirkwood PLL sample-at-reset configuration
+ * (6180 has different SAR layout than other Kirkwood SoCs)
+ *
+ * SAR0[4:3,22,1] : CPU frequency (6281,6292,6282)
+ * 4 = 600 MHz
+ * 6 = 800 MHz
+ * 7 = 1000 MHz
+ * 9 = 1200 MHz
+ * 12 = 1500 MHz
+ * 13 = 1600 MHz
+ * 14 = 1800 MHz
+ * 15 = 2000 MHz
+ * others reserved.
+ *
+ * SAR0[19,10:9] : CPU to L2 Clock divider ratio (6281,6292,6282)
+ * 1 = (1/2) * CPU
+ * 3 = (1/3) * CPU
+ * 5 = (1/4) * CPU
+ * others reserved.
+ *
+ * SAR0[8:5] : CPU to DDR DRAM Clock divider ratio (6281,6292,6282)
+ * 2 = (1/2) * CPU
+ * 4 = (1/3) * CPU
+ * 6 = (1/4) * CPU
+ * 7 = (2/9) * CPU
+ * 8 = (1/5) * CPU
+ * 9 = (1/6) * CPU
+ * others reserved.
+ *
+ * SAR0[4:2] : Kirkwood 6180 cpu/l2/ddr clock configuration (6180 only)
+ * 5 = [CPU = 600 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/3) * CPU]
+ * 6 = [CPU = 800 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/4) * CPU]
+ * 7 = [CPU = 1000 MHz, L2 = (1/2) * CPU, DDR = 200 MHz = (1/5) * CPU]
+ * others reserved.
+ *
+ * SAR0[21] : TCLK frequency
+ * 0 = 200 MHz
+ * 1 = 166 MHz
+ * others reserved.
+ */
+
+#define SAR_KIRKWOOD_CPU_FREQ(x) \
+ (((x & (1 << 1)) >> 1) | \
+ ((x & (1 << 22)) >> 21) | \
+ ((x & (3 << 3)) >> 1))
+#define SAR_KIRKWOOD_L2_RATIO(x) \
+ (((x & (3 << 9)) >> 9) | \
+ (((x & (1 << 19)) >> 17)))
+#define SAR_KIRKWOOD_DDR_RATIO 5
+#define SAR_KIRKWOOD_DDR_RATIO_MASK 0xf
+#define SAR_MV88F6180_CLK 2
+#define SAR_MV88F6180_CLK_MASK 0x7
+#define SAR_KIRKWOOD_TCLK_FREQ 21
+#define SAR_KIRKWOOD_TCLK_FREQ_MASK 0x1
+
+enum { KIRKWOOD_CPU_TO_L2, KIRKWOOD_CPU_TO_DDR };
+
+static const struct coreclk_ratio kirkwood_coreclk_ratios[] __initconst = {
+ { .id = KIRKWOOD_CPU_TO_L2, .name = "l2clk", },
+ { .id = KIRKWOOD_CPU_TO_DDR, .name = "ddrclk", }
+};
+
+static u32 __init kirkwood_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_KIRKWOOD_TCLK_FREQ) &
+ SAR_KIRKWOOD_TCLK_FREQ_MASK;
+ return (opt) ? 166666667 : 200000000;
+}
+
+static const u32 kirkwood_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0,
+ 600000000,
+ 0,
+ 800000000,
+ 1000000000,
+ 0,
+ 1200000000,
+ 0, 0,
+ 1500000000,
+ 1600000000,
+ 1800000000,
+ 2000000000
+};
+
+static u32 __init kirkwood_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = SAR_KIRKWOOD_CPU_FREQ(readl(sar));
+ return kirkwood_cpu_freqs[opt];
+}
+
+static const int kirkwood_cpu_l2_ratios[8][2] __initconst = {
+ { 0, 1 }, { 1, 2 }, { 0, 1 }, { 1, 3 },
+ { 0, 1 }, { 1, 4 }, { 0, 1 }, { 0, 1 }
+};
+
+static const int kirkwood_cpu_ddr_ratios[16][2] __initconst = {
+ { 0, 1 }, { 0, 1 }, { 1, 2 }, { 0, 1 },
+ { 1, 3 }, { 0, 1 }, { 1, 4 }, { 2, 9 },
+ { 1, 5 }, { 1, 6 }, { 0, 1 }, { 0, 1 },
+ { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 }
+};
+
+static void __init kirkwood_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case KIRKWOOD_CPU_TO_L2:
+ {
+ u32 opt = SAR_KIRKWOOD_L2_RATIO(readl(sar));
+ *mult = kirkwood_cpu_l2_ratios[opt][0];
+ *div = kirkwood_cpu_l2_ratios[opt][1];
+ break;
+ }
+ case KIRKWOOD_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_KIRKWOOD_DDR_RATIO) &
+ SAR_KIRKWOOD_DDR_RATIO_MASK;
+ *mult = kirkwood_cpu_ddr_ratios[opt][0];
+ *div = kirkwood_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const u32 mv88f6180_cpu_freqs[] __initconst = {
+ 0, 0, 0, 0, 0,
+ 600000000,
+ 800000000,
+ 1000000000
+};
+
+static u32 __init mv88f6180_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) & SAR_MV88F6180_CLK_MASK;
+ return mv88f6180_cpu_freqs[opt];
+}
+
+static const int mv88f6180_cpu_ddr_ratios[8][2] __initconst = {
+ { 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
+ { 0, 1 }, { 1, 3 }, { 1, 4 }, { 1, 5 }
+};
+
+static void __init mv88f6180_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ switch (id) {
+ case KIRKWOOD_CPU_TO_L2:
+ {
+ /* mv88f6180 has a fixed 1:2 CPU-to-L2 ratio */
+ *mult = 1;
+ *div = 2;
+ break;
+ }
+ case KIRKWOOD_CPU_TO_DDR:
+ {
+ u32 opt = (readl(sar) >> SAR_MV88F6180_CLK) &
+ SAR_MV88F6180_CLK_MASK;
+ *mult = mv88f6180_cpu_ddr_ratios[opt][0];
+ *div = mv88f6180_cpu_ddr_ratios[opt][1];
+ break;
+ }
+ }
+}
+
+static const struct coreclk_soc_desc kirkwood_coreclks = {
+ .get_tclk_freq = kirkwood_get_tclk_freq,
+ .get_cpu_freq = kirkwood_get_cpu_freq,
+ .get_clk_ratio = kirkwood_get_clk_ratio,
+ .ratios = kirkwood_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+static const struct coreclk_soc_desc mv88f6180_coreclks = {
+ .get_tclk_freq = kirkwood_get_tclk_freq,
+ .get_cpu_freq = mv88f6180_get_cpu_freq,
+ .get_clk_ratio = mv88f6180_get_clk_ratio,
+ .ratios = kirkwood_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(kirkwood_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+
+static const struct clk_gating_soc_desc kirkwood_gating_desc[] __initconst = {
+ { "ge0", NULL, 0, 0 },
+ { "pex0", NULL, 2, 0 },
+ { "usb0", NULL, 3, 0 },
+ { "sdio", NULL, 4, 0 },
+ { "tsu", NULL, 5, 0 },
+ { "runit", NULL, 7, 0 },
+ { "xor0", NULL, 8, 0 },
+ { "audio", NULL, 9, 0 },
+ { "sata0", NULL, 14, 0 },
+ { "sata1", NULL, 15, 0 },
+ { "xor1", NULL, 16, 0 },
+ { "crypto", NULL, 17, 0 },
+ { "pex1", NULL, 18, 0 },
+ { "ge1", NULL, 19, 0 },
+ { "tdm", NULL, 20, 0 },
+ { }
+};
+
+
+/*
+ * Clock Muxing Control
+ */
+
+struct clk_muxing_soc_desc {
+ const char *name;
+ const char **parents;
+ int num_parents;
+ int shift;
+ int width;
+ unsigned long flags;
+};
+
+struct clk_muxing_ctrl {
+ spinlock_t *lock;
+ struct clk **muxes;
+ int num_muxes;
+};
+
+static const char *powersave_parents[] = {
+ "cpuclk",
+ "ddrclk",
+};
+
+static const struct clk_muxing_soc_desc kirkwood_mux_desc[] __initconst = {
+ { "powersave", powersave_parents, ARRAY_SIZE(powersave_parents),
+ 11, 1, 0 },
+};
+
+#define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw)
+
+static struct clk *clk_muxing_get_src(
+ struct of_phandle_args *clkspec, void *data)
+{
+ struct clk_muxing_ctrl *ctrl = (struct clk_muxing_ctrl *)data;
+ int n;
+
+ if (clkspec->args_count < 1)
+ return ERR_PTR(-EINVAL);
+
+ for (n = 0; n < ctrl->num_muxes; n++) {
+ struct clk_mux *mux =
+ to_clk_mux(__clk_get_hw(ctrl->muxes[n]));
+ if (clkspec->args[0] == mux->shift)
+ return ctrl->muxes[n];
+ }
+ return ERR_PTR(-ENODEV);
+}
+
+static void __init kirkwood_clk_muxing_setup(struct device_node *np,
+ const struct clk_muxing_soc_desc *desc)
+{
+ struct clk_muxing_ctrl *ctrl;
+ void __iomem *base;
+ int n;
+
+ base = of_iomap(np, 0);
+ if (WARN_ON(!base))
+ return;
+
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (WARN_ON(!ctrl))
+ goto ctrl_out;
+
+ /* lock must already be initialized */
+ ctrl->lock = &ctrl_gating_lock;
+
+ /* Count, allocate, and register clock muxes */
+ for (n = 0; desc[n].name;)
+ n++;
+
+ ctrl->num_muxes = n;
+ ctrl->muxes = kcalloc(ctrl->num_muxes, sizeof(struct clk *),
+ GFP_KERNEL);
+ if (WARN_ON(!ctrl->muxes))
+ goto muxes_out;
+
+ for (n = 0; n < ctrl->num_muxes; n++) {
+ ctrl->muxes[n] = clk_register_mux(NULL, desc[n].name,
+ desc[n].parents, desc[n].num_parents,
+ desc[n].flags, base, desc[n].shift,
+ desc[n].width, desc[n].flags, ctrl->lock);
+ WARN_ON(IS_ERR(ctrl->muxes[n]));
+ }
+
+ of_clk_add_provider(np, clk_muxing_get_src, ctrl);
+
+ return;
+muxes_out:
+ kfree(ctrl);
+ctrl_out:
+ iounmap(base);
+}
+
+static void __init kirkwood_clk_init(struct device_node *np)
+{
+ struct device_node *cgnp =
+ of_find_compatible_node(NULL, NULL, "marvell,kirkwood-gating-clock");
+
+
+ if (of_device_is_compatible(np, "marvell,mv88f6180-core-clock"))
+ mvebu_coreclk_setup(np, &mv88f6180_coreclks);
+ else
+ mvebu_coreclk_setup(np, &kirkwood_coreclks);
+
+ if (cgnp) {
+ mvebu_clk_gating_setup(cgnp, kirkwood_gating_desc);
+ kirkwood_clk_muxing_setup(cgnp, kirkwood_mux_desc);
+ }
+}
+CLK_OF_DECLARE(kirkwood_clk, "marvell,kirkwood-core-clock",
+ kirkwood_clk_init);
+CLK_OF_DECLARE(mv88f6180_clk, "marvell,mv88f6180-core-clock",
+ kirkwood_clk_init);
diff --git a/drivers/clk/mvebu/orion.c b/drivers/clk/mvebu/orion.c
new file mode 100644
index 000000000..fd129566c
--- /dev/null
+++ b/drivers/clk/mvebu/orion.c
@@ -0,0 +1,210 @@
+/*
+ * Marvell Orion SoC clocks
+ *
+ * Copyright (C) 2014 Thomas Petazzoni
+ *
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include "common.h"
+
+static const struct coreclk_ratio orion_coreclk_ratios[] __initconst = {
+ { .id = 0, .name = "ddrclk", }
+};
+
+/*
+ * Orion 5182
+ */
+
+#define SAR_MV88F5182_TCLK_FREQ 8
+#define SAR_MV88F5182_TCLK_FREQ_MASK 0x3
+
+static u32 __init mv88f5182_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_TCLK_FREQ) &
+ SAR_MV88F5182_TCLK_FREQ_MASK;
+ if (opt == 1)
+ return 150000000;
+ else if (opt == 2)
+ return 166666667;
+ else
+ return 0;
+}
+
+#define SAR_MV88F5182_CPU_FREQ 4
+#define SAR_MV88F5182_CPU_FREQ_MASK 0xf
+
+static u32 __init mv88f5182_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
+ SAR_MV88F5182_CPU_FREQ_MASK;
+ if (opt == 0)
+ return 333333333;
+ else if (opt == 1 || opt == 2)
+ return 400000000;
+ else if (opt == 3)
+ return 500000000;
+ else
+ return 0;
+}
+
+static void __init mv88f5182_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5182_CPU_FREQ) &
+ SAR_MV88F5182_CPU_FREQ_MASK;
+ if (opt == 0 || opt == 1) {
+ *mult = 1;
+ *div = 2;
+ } else if (opt == 2 || opt == 3) {
+ *mult = 1;
+ *div = 3;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f5182_coreclks = {
+ .get_tclk_freq = mv88f5182_get_tclk_freq,
+ .get_cpu_freq = mv88f5182_get_cpu_freq,
+ .get_clk_ratio = mv88f5182_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+static void __init mv88f5182_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f5182_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f5182_clk, "marvell,mv88f5182-core-clock", mv88f5182_clk_init);
+
+/*
+ * Orion 5281
+ */
+
+static u32 __init mv88f5281_get_tclk_freq(void __iomem *sar)
+{
+ /* On 5281, tclk is always 166 Mhz */
+ return 166666667;
+}
+
+#define SAR_MV88F5281_CPU_FREQ 4
+#define SAR_MV88F5281_CPU_FREQ_MASK 0xf
+
+static u32 __init mv88f5281_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
+ SAR_MV88F5281_CPU_FREQ_MASK;
+ if (opt == 1 || opt == 2)
+ return 400000000;
+ else if (opt == 3)
+ return 500000000;
+ else
+ return 0;
+}
+
+static void __init mv88f5281_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F5281_CPU_FREQ) &
+ SAR_MV88F5281_CPU_FREQ_MASK;
+ if (opt == 1) {
+ *mult = 1;
+ *div = 2;
+ } else if (opt == 2 || opt == 3) {
+ *mult = 1;
+ *div = 3;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f5281_coreclks = {
+ .get_tclk_freq = mv88f5281_get_tclk_freq,
+ .get_cpu_freq = mv88f5281_get_cpu_freq,
+ .get_clk_ratio = mv88f5281_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+static void __init mv88f5281_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f5281_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f5281_clk, "marvell,mv88f5281-core-clock", mv88f5281_clk_init);
+
+/*
+ * Orion 6183
+ */
+
+#define SAR_MV88F6183_TCLK_FREQ 9
+#define SAR_MV88F6183_TCLK_FREQ_MASK 0x1
+
+static u32 __init mv88f6183_get_tclk_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_TCLK_FREQ) &
+ SAR_MV88F6183_TCLK_FREQ_MASK;
+ if (opt == 0)
+ return 133333333;
+ else if (opt == 1)
+ return 166666667;
+ else
+ return 0;
+}
+
+#define SAR_MV88F6183_CPU_FREQ 1
+#define SAR_MV88F6183_CPU_FREQ_MASK 0x3f
+
+static u32 __init mv88f6183_get_cpu_freq(void __iomem *sar)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
+ SAR_MV88F6183_CPU_FREQ_MASK;
+ if (opt == 9)
+ return 333333333;
+ else if (opt == 17)
+ return 400000000;
+ else
+ return 0;
+}
+
+static void __init mv88f6183_get_clk_ratio(void __iomem *sar, int id,
+ int *mult, int *div)
+{
+ u32 opt = (readl(sar) >> SAR_MV88F6183_CPU_FREQ) &
+ SAR_MV88F6183_CPU_FREQ_MASK;
+ if (opt == 9 || opt == 17) {
+ *mult = 1;
+ *div = 2;
+ } else {
+ *mult = 0;
+ *div = 1;
+ }
+}
+
+static const struct coreclk_soc_desc mv88f6183_coreclks = {
+ .get_tclk_freq = mv88f6183_get_tclk_freq,
+ .get_cpu_freq = mv88f6183_get_cpu_freq,
+ .get_clk_ratio = mv88f6183_get_clk_ratio,
+ .ratios = orion_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
+};
+
+
+static void __init mv88f6183_clk_init(struct device_node *np)
+{
+ return mvebu_coreclk_setup(np, &mv88f6183_coreclks);
+}
+
+CLK_OF_DECLARE(mv88f6183_clk, "marvell,mv88f6183-core-clock", mv88f6183_clk_init);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-13 03:22:36 +0000