summaryrefslogtreecommitdiff
path: root/drivers/clk/ti
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/ti')
-rw-r--r--drivers/clk/ti/Kconfig6
-rw-r--r--drivers/clk/ti/Makefile6
-rw-r--r--drivers/clk/ti/adpll.c983
-rw-r--r--drivers/clk/ti/apll.c20
-rw-r--r--drivers/clk/ti/clk-814x.c53
-rw-r--r--drivers/clk/ti/clk.c4
-rw-r--r--drivers/clk/ti/clkt_dpll.c6
-rw-r--r--drivers/clk/ti/clockdomain.c2
-rw-r--r--drivers/clk/ti/composite.c10
-rw-r--r--drivers/clk/ti/divider.c2
-rw-r--r--drivers/clk/ti/dpll.c27
-rw-r--r--drivers/clk/ti/dpll3xxx.c17
-rw-r--r--drivers/clk/ti/dpll44xx.c8
-rw-r--r--drivers/clk/ti/gate.c2
-rw-r--r--drivers/clk/ti/mux.c6
15 files changed, 1108 insertions, 44 deletions
diff --git a/drivers/clk/ti/Kconfig b/drivers/clk/ti/Kconfig
new file mode 100644
index 000000000..271341787
--- /dev/null
+++ b/drivers/clk/ti/Kconfig
@@ -0,0 +1,6 @@
+config COMMON_CLK_TI_ADPLL
+ tristate "Clock driver for dm814x ADPLL"
+ depends on ARCH_OMAP2PLUS || COMPILE_TEST
+ default y if SOC_TI81XX
+ ---help---
+ ADPLL clock driver for the dm814x SoC using common clock framework.
diff --git a/drivers/clk/ti/Makefile b/drivers/clk/ti/Makefile
index d4ac96087..0deac9821 100644
--- a/drivers/clk/ti/Makefile
+++ b/drivers/clk/ti/Makefile
@@ -1,3 +1,5 @@
+ifeq ($(CONFIG_ARCH_OMAP2PLUS), y)
+
obj-y += clk.o autoidle.o clockdomain.o
clk-common = dpll.o composite.o divider.o gate.o \
fixed-factor.o mux.o apll.o \
@@ -18,3 +20,7 @@ obj-$(CONFIG_SOC_AM43XX) += $(clk-common) dpll3xxx.o clk-43xx.o
ifdef CONFIG_ATAGS
obj-$(CONFIG_ARCH_OMAP3) += clk-3xxx-legacy.o
endif
+
+endif # CONFIG_ARCH_OMAP2PLUS
+
+obj-$(CONFIG_COMMON_CLK_TI_ADPLL) += adpll.o
diff --git a/drivers/clk/ti/adpll.c b/drivers/clk/ti/adpll.c
new file mode 100644
index 000000000..255cafb18
--- /dev/null
+++ b/drivers/clk/ti/adpll.c
@@ -0,0 +1,983 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/string.h>
+
+#define ADPLL_PLLSS_MMR_LOCK_OFFSET 0x00 /* Managed by MPPULL */
+#define ADPLL_PLLSS_MMR_LOCK_ENABLED 0x1f125B64
+#define ADPLL_PLLSS_MMR_UNLOCK_MAGIC 0x1eda4c3d
+
+#define ADPLL_PWRCTRL_OFFSET 0x00
+#define ADPLL_PWRCTRL_PONIN 5
+#define ADPLL_PWRCTRL_PGOODIN 4
+#define ADPLL_PWRCTRL_RET 3
+#define ADPLL_PWRCTRL_ISORET 2
+#define ADPLL_PWRCTRL_ISOSCAN 1
+#define ADPLL_PWRCTRL_OFFMODE 0
+
+#define ADPLL_CLKCTRL_OFFSET 0x04
+#define ADPLL_CLKCTRL_CLKDCOLDOEN 29
+#define ADPLL_CLKCTRL_IDLE 23
+#define ADPLL_CLKCTRL_CLKOUTEN 20
+#define ADPLL_CLKINPHIFSEL_ADPLL_S 19 /* REVISIT: which bit? */
+#define ADPLL_CLKCTRL_CLKOUTLDOEN_ADPLL_LJ 19
+#define ADPLL_CLKCTRL_ULOWCLKEN 18
+#define ADPLL_CLKCTRL_CLKDCOLDOPWDNZ 17
+#define ADPLL_CLKCTRL_M2PWDNZ 16
+#define ADPLL_CLKCTRL_M3PWDNZ_ADPLL_S 15
+#define ADPLL_CLKCTRL_LOWCURRSTDBY_ADPLL_S 13
+#define ADPLL_CLKCTRL_LPMODE_ADPLL_S 12
+#define ADPLL_CLKCTRL_REGM4XEN_ADPLL_S 10
+#define ADPLL_CLKCTRL_SELFREQDCO_ADPLL_LJ 10
+#define ADPLL_CLKCTRL_TINITZ 0
+
+#define ADPLL_TENABLE_OFFSET 0x08
+#define ADPLL_TENABLEDIV_OFFSET 0x8c
+
+#define ADPLL_M2NDIV_OFFSET 0x10
+#define ADPLL_M2NDIV_M2 16
+#define ADPLL_M2NDIV_M2_ADPLL_S_WIDTH 5
+#define ADPLL_M2NDIV_M2_ADPLL_LJ_WIDTH 7
+
+#define ADPLL_MN2DIV_OFFSET 0x14
+#define ADPLL_MN2DIV_N2 16
+
+#define ADPLL_FRACDIV_OFFSET 0x18
+#define ADPLL_FRACDIV_REGSD 24
+#define ADPLL_FRACDIV_FRACTIONALM 0
+#define ADPLL_FRACDIV_FRACTIONALM_MASK 0x3ffff
+
+#define ADPLL_BWCTRL_OFFSET 0x1c
+#define ADPLL_BWCTRL_BWCONTROL 1
+#define ADPLL_BWCTRL_BW_INCR_DECRZ 0
+
+#define ADPLL_RESERVED_OFFSET 0x20
+
+#define ADPLL_STATUS_OFFSET 0x24
+#define ADPLL_STATUS_PONOUT 31
+#define ADPLL_STATUS_PGOODOUT 30
+#define ADPLL_STATUS_LDOPWDN 29
+#define ADPLL_STATUS_RECAL_BSTATUS3 28
+#define ADPLL_STATUS_RECAL_OPPIN 27
+#define ADPLL_STATUS_PHASELOCK 10
+#define ADPLL_STATUS_FREQLOCK 9
+#define ADPLL_STATUS_BYPASSACK 8
+#define ADPLL_STATUS_LOSSREF 6
+#define ADPLL_STATUS_CLKOUTENACK 5
+#define ADPLL_STATUS_LOCK2 4
+#define ADPLL_STATUS_M2CHANGEACK 3
+#define ADPLL_STATUS_HIGHJITTER 1
+#define ADPLL_STATUS_BYPASS 0
+#define ADPLL_STATUS_PREPARED_MASK (BIT(ADPLL_STATUS_PHASELOCK) | \
+ BIT(ADPLL_STATUS_FREQLOCK))
+
+#define ADPLL_M3DIV_OFFSET 0x28 /* Only on MPUPLL */
+#define ADPLL_M3DIV_M3 0
+#define ADPLL_M3DIV_M3_WIDTH 5
+#define ADPLL_M3DIV_M3_MASK 0x1f
+
+#define ADPLL_RAMPCTRL_OFFSET 0x2c /* Only on MPUPLL */
+#define ADPLL_RAMPCTRL_CLKRAMPLEVEL 19
+#define ADPLL_RAMPCTRL_CLKRAMPRATE 16
+#define ADPLL_RAMPCTRL_RELOCK_RAMP_EN 0
+
+#define MAX_ADPLL_INPUTS 3
+#define MAX_ADPLL_OUTPUTS 4
+#define ADPLL_MAX_RETRIES 5
+
+#define to_dco(_hw) container_of(_hw, struct ti_adpll_dco_data, hw)
+#define to_adpll(_hw) container_of(_hw, struct ti_adpll_data, dco)
+#define to_clkout(_hw) container_of(_hw, struct ti_adpll_clkout_data, hw)
+
+enum ti_adpll_clocks {
+ TI_ADPLL_DCO,
+ TI_ADPLL_DCO_GATE,
+ TI_ADPLL_N2,
+ TI_ADPLL_M2,
+ TI_ADPLL_M2_GATE,
+ TI_ADPLL_BYPASS,
+ TI_ADPLL_HIF,
+ TI_ADPLL_DIV2,
+ TI_ADPLL_CLKOUT,
+ TI_ADPLL_CLKOUT2,
+ TI_ADPLL_M3,
+};
+
+#define TI_ADPLL_NR_CLOCKS (TI_ADPLL_M3 + 1)
+
+enum ti_adpll_inputs {
+ TI_ADPLL_CLKINP,
+ TI_ADPLL_CLKINPULOW,
+ TI_ADPLL_CLKINPHIF,
+};
+
+enum ti_adpll_s_outputs {
+ TI_ADPLL_S_DCOCLKLDO,
+ TI_ADPLL_S_CLKOUT,
+ TI_ADPLL_S_CLKOUTX2,
+ TI_ADPLL_S_CLKOUTHIF,
+};
+
+enum ti_adpll_lj_outputs {
+ TI_ADPLL_LJ_CLKDCOLDO,
+ TI_ADPLL_LJ_CLKOUT,
+ TI_ADPLL_LJ_CLKOUTLDO,
+};
+
+struct ti_adpll_platform_data {
+ const bool is_type_s;
+ const int nr_max_inputs;
+ const int nr_max_outputs;
+ const int output_index;
+};
+
+struct ti_adpll_clock {
+ struct clk *clk;
+ struct clk_lookup *cl;
+ void (*unregister)(struct clk *clk);
+};
+
+struct ti_adpll_dco_data {
+ struct clk_hw hw;
+};
+
+struct ti_adpll_clkout_data {
+ struct ti_adpll_data *adpll;
+ struct clk_gate gate;
+ struct clk_hw hw;
+};
+
+struct ti_adpll_data {
+ struct device *dev;
+ const struct ti_adpll_platform_data *c;
+ struct device_node *np;
+ unsigned long pa;
+ void __iomem *iobase;
+ void __iomem *regs;
+ spinlock_t lock; /* For ADPLL shared register access */
+ const char *parent_names[MAX_ADPLL_INPUTS];
+ struct clk *parent_clocks[MAX_ADPLL_INPUTS];
+ struct ti_adpll_clock *clocks;
+ struct clk_onecell_data outputs;
+ struct ti_adpll_dco_data dco;
+};
+
+static const char *ti_adpll_clk_get_name(struct ti_adpll_data *d,
+ int output_index,
+ const char *postfix)
+{
+ const char *name;
+ int err;
+
+ if (output_index >= 0) {
+ err = of_property_read_string_index(d->np,
+ "clock-output-names",
+ output_index,
+ &name);
+ if (err)
+ return NULL;
+ } else {
+ const char *base_name = "adpll";
+ char *buf;
+
+ buf = devm_kzalloc(d->dev, 8 + 1 + strlen(base_name) + 1 +
+ strlen(postfix), GFP_KERNEL);
+ if (!buf)
+ return NULL;
+ sprintf(buf, "%08lx.%s.%s", d->pa, base_name, postfix);
+ name = buf;
+ }
+
+ return name;
+}
+
+#define ADPLL_MAX_CON_ID 16 /* See MAX_CON_ID */
+
+static int ti_adpll_setup_clock(struct ti_adpll_data *d, struct clk *clock,
+ int index, int output_index, const char *name,
+ void (*unregister)(struct clk *clk))
+{
+ struct clk_lookup *cl;
+ const char *postfix = NULL;
+ char con_id[ADPLL_MAX_CON_ID];
+
+ d->clocks[index].clk = clock;
+ d->clocks[index].unregister = unregister;
+
+ /* Separate con_id in format "pll040dcoclkldo" to fit MAX_CON_ID */
+ postfix = strrchr(name, '.');
+ if (strlen(postfix) > 1) {
+ if (strlen(postfix) > ADPLL_MAX_CON_ID)
+ dev_warn(d->dev, "clock %s con_id lookup may fail\n",
+ name);
+ snprintf(con_id, 16, "pll%03lx%s", d->pa & 0xfff, postfix + 1);
+ cl = clkdev_create(clock, con_id, NULL);
+ if (!cl)
+ return -ENOMEM;
+ d->clocks[index].cl = cl;
+ } else {
+ dev_warn(d->dev, "no con_id for clock %s\n", name);
+ }
+
+ if (output_index < 0)
+ return 0;
+
+ d->outputs.clks[output_index] = clock;
+ d->outputs.clk_num++;
+
+ return 0;
+}
+
+static int ti_adpll_init_divider(struct ti_adpll_data *d,
+ enum ti_adpll_clocks index,
+ int output_index, char *name,
+ struct clk *parent_clock,
+ void __iomem *reg,
+ u8 shift, u8 width,
+ u8 clk_divider_flags)
+{
+ const char *child_name;
+ const char *parent_name;
+ struct clk *clock;
+
+ child_name = ti_adpll_clk_get_name(d, output_index, name);
+ if (!child_name)
+ return -EINVAL;
+
+ parent_name = __clk_get_name(parent_clock);
+ clock = clk_register_divider(d->dev, child_name, parent_name, 0,
+ reg, shift, width, clk_divider_flags,
+ &d->lock);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "failed to register divider %s: %li\n",
+ name, PTR_ERR(clock));
+ return PTR_ERR(clock);
+ }
+
+ return ti_adpll_setup_clock(d, clock, index, output_index, child_name,
+ clk_unregister_divider);
+}
+
+static int ti_adpll_init_mux(struct ti_adpll_data *d,
+ enum ti_adpll_clocks index,
+ char *name, struct clk *clk0,
+ struct clk *clk1,
+ void __iomem *reg,
+ u8 shift)
+{
+ const char *child_name;
+ const char *parents[2];
+ struct clk *clock;
+
+ child_name = ti_adpll_clk_get_name(d, -ENODEV, name);
+ if (!child_name)
+ return -ENOMEM;
+ parents[0] = __clk_get_name(clk0);
+ parents[1] = __clk_get_name(clk1);
+ clock = clk_register_mux(d->dev, child_name, parents, 2, 0,
+ reg, shift, 1, 0, &d->lock);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "failed to register mux %s: %li\n",
+ name, PTR_ERR(clock));
+ return PTR_ERR(clock);
+ }
+
+ return ti_adpll_setup_clock(d, clock, index, -ENODEV, child_name,
+ clk_unregister_mux);
+}
+
+static int ti_adpll_init_gate(struct ti_adpll_data *d,
+ enum ti_adpll_clocks index,
+ int output_index, char *name,
+ struct clk *parent_clock,
+ void __iomem *reg,
+ u8 bit_idx,
+ u8 clk_gate_flags)
+{
+ const char *child_name;
+ const char *parent_name;
+ struct clk *clock;
+
+ child_name = ti_adpll_clk_get_name(d, output_index, name);
+ if (!child_name)
+ return -EINVAL;
+
+ parent_name = __clk_get_name(parent_clock);
+ clock = clk_register_gate(d->dev, child_name, parent_name, 0,
+ reg, bit_idx, clk_gate_flags,
+ &d->lock);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "failed to register gate %s: %li\n",
+ name, PTR_ERR(clock));
+ return PTR_ERR(clock);
+ }
+
+ return ti_adpll_setup_clock(d, clock, index, output_index, child_name,
+ clk_unregister_gate);
+}
+
+static int ti_adpll_init_fixed_factor(struct ti_adpll_data *d,
+ enum ti_adpll_clocks index,
+ char *name,
+ struct clk *parent_clock,
+ unsigned int mult,
+ unsigned int div)
+{
+ const char *child_name;
+ const char *parent_name;
+ struct clk *clock;
+
+ child_name = ti_adpll_clk_get_name(d, -ENODEV, name);
+ if (!child_name)
+ return -ENOMEM;
+
+ parent_name = __clk_get_name(parent_clock);
+ clock = clk_register_fixed_factor(d->dev, child_name, parent_name,
+ 0, mult, div);
+ if (IS_ERR(clock))
+ return PTR_ERR(clock);
+
+ return ti_adpll_setup_clock(d, clock, index, -ENODEV, child_name,
+ clk_unregister);
+}
+
+static void ti_adpll_set_idle_bypass(struct ti_adpll_data *d)
+{
+ unsigned long flags;
+ u32 v;
+
+ spin_lock_irqsave(&d->lock, flags);
+ v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET);
+ v |= BIT(ADPLL_CLKCTRL_IDLE);
+ writel_relaxed(v, d->regs + ADPLL_CLKCTRL_OFFSET);
+ spin_unlock_irqrestore(&d->lock, flags);
+}
+
+static void ti_adpll_clear_idle_bypass(struct ti_adpll_data *d)
+{
+ unsigned long flags;
+ u32 v;
+
+ spin_lock_irqsave(&d->lock, flags);
+ v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET);
+ v &= ~BIT(ADPLL_CLKCTRL_IDLE);
+ writel_relaxed(v, d->regs + ADPLL_CLKCTRL_OFFSET);
+ spin_unlock_irqrestore(&d->lock, flags);
+}
+
+static bool ti_adpll_clock_is_bypass(struct ti_adpll_data *d)
+{
+ u32 v;
+
+ v = readl_relaxed(d->regs + ADPLL_STATUS_OFFSET);
+
+ return v & BIT(ADPLL_STATUS_BYPASS);
+}
+
+/*
+ * Locked and bypass are not actually mutually exclusive: if you only care
+ * about the DCO clock and not CLKOUT you can clear M2PWDNZ before enabling
+ * the PLL, resulting in status (FREQLOCK | PHASELOCK | BYPASS) after lock.
+ */
+static bool ti_adpll_is_locked(struct ti_adpll_data *d)
+{
+ u32 v = readl_relaxed(d->regs + ADPLL_STATUS_OFFSET);
+
+ return (v & ADPLL_STATUS_PREPARED_MASK) == ADPLL_STATUS_PREPARED_MASK;
+}
+
+static int ti_adpll_wait_lock(struct ti_adpll_data *d)
+{
+ int retries = ADPLL_MAX_RETRIES;
+
+ do {
+ if (ti_adpll_is_locked(d))
+ return 0;
+ usleep_range(200, 300);
+ } while (retries--);
+
+ dev_err(d->dev, "pll failed to lock\n");
+ return -ETIMEDOUT;
+}
+
+static int ti_adpll_prepare(struct clk_hw *hw)
+{
+ struct ti_adpll_dco_data *dco = to_dco(hw);
+ struct ti_adpll_data *d = to_adpll(dco);
+
+ ti_adpll_clear_idle_bypass(d);
+ ti_adpll_wait_lock(d);
+
+ return 0;
+}
+
+static void ti_adpll_unprepare(struct clk_hw *hw)
+{
+ struct ti_adpll_dco_data *dco = to_dco(hw);
+ struct ti_adpll_data *d = to_adpll(dco);
+
+ ti_adpll_set_idle_bypass(d);
+}
+
+static int ti_adpll_is_prepared(struct clk_hw *hw)
+{
+ struct ti_adpll_dco_data *dco = to_dco(hw);
+ struct ti_adpll_data *d = to_adpll(dco);
+
+ return ti_adpll_is_locked(d);
+}
+
+/*
+ * Note that the DCO clock is never subject to bypass: if the PLL is off,
+ * dcoclk is low.
+ */
+static unsigned long ti_adpll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct ti_adpll_dco_data *dco = to_dco(hw);
+ struct ti_adpll_data *d = to_adpll(dco);
+ u32 frac_m, divider, v;
+ u64 rate;
+ unsigned long flags;
+
+ if (ti_adpll_clock_is_bypass(d))
+ return 0;
+
+ spin_lock_irqsave(&d->lock, flags);
+ frac_m = readl_relaxed(d->regs + ADPLL_FRACDIV_OFFSET);
+ frac_m &= ADPLL_FRACDIV_FRACTIONALM_MASK;
+ rate = (u64)readw_relaxed(d->regs + ADPLL_MN2DIV_OFFSET) << 18;
+ rate += frac_m;
+ rate *= parent_rate;
+ divider = (readw_relaxed(d->regs + ADPLL_M2NDIV_OFFSET) + 1) << 18;
+ spin_unlock_irqrestore(&d->lock, flags);
+
+ do_div(rate, divider);
+
+ if (d->c->is_type_s) {
+ v = readl_relaxed(d->regs + ADPLL_CLKCTRL_OFFSET);
+ if (v & BIT(ADPLL_CLKCTRL_REGM4XEN_ADPLL_S))
+ rate *= 4;
+ rate *= 2;
+ }
+
+ return rate;
+}
+
+/* PLL parent is always clkinp, bypass only affects the children */
+static u8 ti_adpll_get_parent(struct clk_hw *hw)
+{
+ return 0;
+}
+
+static struct clk_ops ti_adpll_ops = {
+ .prepare = ti_adpll_prepare,
+ .unprepare = ti_adpll_unprepare,
+ .is_prepared = ti_adpll_is_prepared,
+ .recalc_rate = ti_adpll_recalc_rate,
+ .get_parent = ti_adpll_get_parent,
+};
+
+static int ti_adpll_init_dco(struct ti_adpll_data *d)
+{
+ struct clk_init_data init;
+ struct clk *clock;
+ const char *postfix;
+ int width, err;
+
+ d->outputs.clks = devm_kzalloc(d->dev, sizeof(struct clk *) *
+ MAX_ADPLL_OUTPUTS,
+ GFP_KERNEL);
+ if (!d->outputs.clks)
+ return -ENOMEM;
+
+ if (d->c->output_index < 0)
+ postfix = "dco";
+ else
+ postfix = NULL;
+
+ init.name = ti_adpll_clk_get_name(d, d->c->output_index, postfix);
+ if (!init.name)
+ return -EINVAL;
+
+ init.parent_names = d->parent_names;
+ init.num_parents = d->c->nr_max_inputs;
+ init.ops = &ti_adpll_ops;
+ init.flags = CLK_GET_RATE_NOCACHE;
+ d->dco.hw.init = &init;
+
+ if (d->c->is_type_s)
+ width = 5;
+ else
+ width = 4;
+
+ /* Internal input clock divider N2 */
+ err = ti_adpll_init_divider(d, TI_ADPLL_N2, -ENODEV, "n2",
+ d->parent_clocks[TI_ADPLL_CLKINP],
+ d->regs + ADPLL_MN2DIV_OFFSET,
+ ADPLL_MN2DIV_N2, width, 0);
+ if (err)
+ return err;
+
+ clock = devm_clk_register(d->dev, &d->dco.hw);
+ if (IS_ERR(clock))
+ return PTR_ERR(clock);
+
+ return ti_adpll_setup_clock(d, clock, TI_ADPLL_DCO, d->c->output_index,
+ init.name, NULL);
+}
+
+static int ti_adpll_clkout_enable(struct clk_hw *hw)
+{
+ struct ti_adpll_clkout_data *co = to_clkout(hw);
+ struct clk_hw *gate_hw = &co->gate.hw;
+
+ __clk_hw_set_clk(gate_hw, hw);
+
+ return clk_gate_ops.enable(gate_hw);
+}
+
+static void ti_adpll_clkout_disable(struct clk_hw *hw)
+{
+ struct ti_adpll_clkout_data *co = to_clkout(hw);
+ struct clk_hw *gate_hw = &co->gate.hw;
+
+ __clk_hw_set_clk(gate_hw, hw);
+ clk_gate_ops.disable(gate_hw);
+}
+
+static int ti_adpll_clkout_is_enabled(struct clk_hw *hw)
+{
+ struct ti_adpll_clkout_data *co = to_clkout(hw);
+ struct clk_hw *gate_hw = &co->gate.hw;
+
+ __clk_hw_set_clk(gate_hw, hw);
+
+ return clk_gate_ops.is_enabled(gate_hw);
+}
+
+/* Setting PLL bypass puts clkout and clkoutx2 into bypass */
+static u8 ti_adpll_clkout_get_parent(struct clk_hw *hw)
+{
+ struct ti_adpll_clkout_data *co = to_clkout(hw);
+ struct ti_adpll_data *d = co->adpll;
+
+ return ti_adpll_clock_is_bypass(d);
+}
+
+static int ti_adpll_init_clkout(struct ti_adpll_data *d,
+ enum ti_adpll_clocks index,
+ int output_index, int gate_bit,
+ char *name, struct clk *clk0,
+ struct clk *clk1)
+{
+ struct ti_adpll_clkout_data *co;
+ struct clk_init_data init;
+ struct clk_ops *ops;
+ const char *parent_names[2];
+ const char *child_name;
+ struct clk *clock;
+ int err;
+
+ co = devm_kzalloc(d->dev, sizeof(*co), GFP_KERNEL);
+ if (!co)
+ return -ENOMEM;
+ co->adpll = d;
+
+ err = of_property_read_string_index(d->np,
+ "clock-output-names",
+ output_index,
+ &child_name);
+ if (err)
+ return err;
+
+ ops = devm_kzalloc(d->dev, sizeof(*ops), GFP_KERNEL);
+ if (!ops)
+ return -ENOMEM;
+
+ init.name = child_name;
+ init.ops = ops;
+ init.flags = CLK_IS_BASIC;
+ co->hw.init = &init;
+ parent_names[0] = __clk_get_name(clk0);
+ parent_names[1] = __clk_get_name(clk1);
+ init.parent_names = parent_names;
+ init.num_parents = 2;
+
+ ops->get_parent = ti_adpll_clkout_get_parent;
+ ops->determine_rate = __clk_mux_determine_rate;
+ if (gate_bit) {
+ co->gate.lock = &d->lock;
+ co->gate.reg = d->regs + ADPLL_CLKCTRL_OFFSET;
+ co->gate.bit_idx = gate_bit;
+ ops->enable = ti_adpll_clkout_enable;
+ ops->disable = ti_adpll_clkout_disable;
+ ops->is_enabled = ti_adpll_clkout_is_enabled;
+ }
+
+ clock = devm_clk_register(d->dev, &co->hw);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "failed to register output %s: %li\n",
+ name, PTR_ERR(clock));
+ return PTR_ERR(clock);
+ }
+
+ return ti_adpll_setup_clock(d, clock, index, output_index, child_name,
+ NULL);
+}
+
+static int ti_adpll_init_children_adpll_s(struct ti_adpll_data *d)
+{
+ int err;
+
+ if (!d->c->is_type_s)
+ return 0;
+
+ /* Internal mux, sources from divider N2 or clkinpulow */
+ err = ti_adpll_init_mux(d, TI_ADPLL_BYPASS, "bypass",
+ d->clocks[TI_ADPLL_N2].clk,
+ d->parent_clocks[TI_ADPLL_CLKINPULOW],
+ d->regs + ADPLL_CLKCTRL_OFFSET,
+ ADPLL_CLKCTRL_ULOWCLKEN);
+ if (err)
+ return err;
+
+ /* Internal divider M2, sources DCO */
+ err = ti_adpll_init_divider(d, TI_ADPLL_M2, -ENODEV, "m2",
+ d->clocks[TI_ADPLL_DCO].clk,
+ d->regs + ADPLL_M2NDIV_OFFSET,
+ ADPLL_M2NDIV_M2,
+ ADPLL_M2NDIV_M2_ADPLL_S_WIDTH,
+ CLK_DIVIDER_ONE_BASED);
+ if (err)
+ return err;
+
+ /* Internal fixed divider, after M2 before clkout */
+ err = ti_adpll_init_fixed_factor(d, TI_ADPLL_DIV2, "div2",
+ d->clocks[TI_ADPLL_M2].clk,
+ 1, 2);
+ if (err)
+ return err;
+
+ /* Output clkout with a mux and gate, sources from div2 or bypass */
+ err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT, TI_ADPLL_S_CLKOUT,
+ ADPLL_CLKCTRL_CLKOUTEN, "clkout",
+ d->clocks[TI_ADPLL_DIV2].clk,
+ d->clocks[TI_ADPLL_BYPASS].clk);
+ if (err)
+ return err;
+
+ /* Output clkoutx2 with a mux and gate, sources from M2 or bypass */
+ err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT2, TI_ADPLL_S_CLKOUTX2, 0,
+ "clkout2", d->clocks[TI_ADPLL_M2].clk,
+ d->clocks[TI_ADPLL_BYPASS].clk);
+ if (err)
+ return err;
+
+ /* Internal mux, sources from DCO and clkinphif */
+ if (d->parent_clocks[TI_ADPLL_CLKINPHIF]) {
+ err = ti_adpll_init_mux(d, TI_ADPLL_HIF, "hif",
+ d->clocks[TI_ADPLL_DCO].clk,
+ d->parent_clocks[TI_ADPLL_CLKINPHIF],
+ d->regs + ADPLL_CLKCTRL_OFFSET,
+ ADPLL_CLKINPHIFSEL_ADPLL_S);
+ if (err)
+ return err;
+ }
+
+ /* Output clkouthif with a divider M3, sources from hif */
+ err = ti_adpll_init_divider(d, TI_ADPLL_M3, TI_ADPLL_S_CLKOUTHIF, "m3",
+ d->clocks[TI_ADPLL_HIF].clk,
+ d->regs + ADPLL_M3DIV_OFFSET,
+ ADPLL_M3DIV_M3,
+ ADPLL_M3DIV_M3_WIDTH,
+ CLK_DIVIDER_ONE_BASED);
+ if (err)
+ return err;
+
+ /* Output clock dcoclkldo is the DCO */
+
+ return 0;
+}
+
+static int ti_adpll_init_children_adpll_lj(struct ti_adpll_data *d)
+{
+ int err;
+
+ if (d->c->is_type_s)
+ return 0;
+
+ /* Output clkdcoldo, gated output of DCO */
+ err = ti_adpll_init_gate(d, TI_ADPLL_DCO_GATE, TI_ADPLL_LJ_CLKDCOLDO,
+ "clkdcoldo", d->clocks[TI_ADPLL_DCO].clk,
+ d->regs + ADPLL_CLKCTRL_OFFSET,
+ ADPLL_CLKCTRL_CLKDCOLDOEN, 0);
+ if (err)
+ return err;
+
+ /* Internal divider M2, sources from DCO */
+ err = ti_adpll_init_divider(d, TI_ADPLL_M2, -ENODEV,
+ "m2", d->clocks[TI_ADPLL_DCO].clk,
+ d->regs + ADPLL_M2NDIV_OFFSET,
+ ADPLL_M2NDIV_M2,
+ ADPLL_M2NDIV_M2_ADPLL_LJ_WIDTH,
+ CLK_DIVIDER_ONE_BASED);
+ if (err)
+ return err;
+
+ /* Output clkoutldo, gated output of M2 */
+ err = ti_adpll_init_gate(d, TI_ADPLL_M2_GATE, TI_ADPLL_LJ_CLKOUTLDO,
+ "clkoutldo", d->clocks[TI_ADPLL_M2].clk,
+ d->regs + ADPLL_CLKCTRL_OFFSET,
+ ADPLL_CLKCTRL_CLKOUTLDOEN_ADPLL_LJ,
+ 0);
+ if (err)
+ return err;
+
+ /* Internal mux, sources from divider N2 or clkinpulow */
+ err = ti_adpll_init_mux(d, TI_ADPLL_BYPASS, "bypass",
+ d->clocks[TI_ADPLL_N2].clk,
+ d->parent_clocks[TI_ADPLL_CLKINPULOW],
+ d->regs + ADPLL_CLKCTRL_OFFSET,
+ ADPLL_CLKCTRL_ULOWCLKEN);
+ if (err)
+ return err;
+
+ /* Output clkout, sources M2 or bypass */
+ err = ti_adpll_init_clkout(d, TI_ADPLL_CLKOUT, TI_ADPLL_S_CLKOUT,
+ ADPLL_CLKCTRL_CLKOUTEN, "clkout",
+ d->clocks[TI_ADPLL_M2].clk,
+ d->clocks[TI_ADPLL_BYPASS].clk);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static void ti_adpll_free_resources(struct ti_adpll_data *d)
+{
+ int i;
+
+ for (i = TI_ADPLL_M3; i >= 0; i--) {
+ struct ti_adpll_clock *ac = &d->clocks[i];
+
+ if (!ac || IS_ERR_OR_NULL(ac->clk))
+ continue;
+ if (ac->cl)
+ clkdev_drop(ac->cl);
+ if (ac->unregister)
+ ac->unregister(ac->clk);
+ }
+}
+
+/* MPU PLL manages the lock register for all PLLs */
+static void ti_adpll_unlock_all(void __iomem *reg)
+{
+ u32 v;
+
+ v = readl_relaxed(reg);
+ if (v == ADPLL_PLLSS_MMR_LOCK_ENABLED)
+ writel_relaxed(ADPLL_PLLSS_MMR_UNLOCK_MAGIC, reg);
+}
+
+static int ti_adpll_init_registers(struct ti_adpll_data *d)
+{
+ int register_offset = 0;
+
+ if (d->c->is_type_s) {
+ register_offset = 8;
+ ti_adpll_unlock_all(d->iobase + ADPLL_PLLSS_MMR_LOCK_OFFSET);
+ }
+
+ d->regs = d->iobase + register_offset + ADPLL_PWRCTRL_OFFSET;
+
+ return 0;
+}
+
+static int ti_adpll_init_inputs(struct ti_adpll_data *d)
+{
+ const char *error = "need at least %i inputs";
+ struct clk *clock;
+ int nr_inputs;
+
+ nr_inputs = of_clk_get_parent_count(d->np);
+ if (nr_inputs < d->c->nr_max_inputs) {
+ dev_err(d->dev, error, nr_inputs);
+ return -EINVAL;
+ }
+ of_clk_parent_fill(d->np, d->parent_names, nr_inputs);
+
+ clock = devm_clk_get(d->dev, d->parent_names[0]);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "could not get clkinp\n");
+ return PTR_ERR(clock);
+ }
+ d->parent_clocks[TI_ADPLL_CLKINP] = clock;
+
+ clock = devm_clk_get(d->dev, d->parent_names[1]);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "could not get clkinpulow clock\n");
+ return PTR_ERR(clock);
+ }
+ d->parent_clocks[TI_ADPLL_CLKINPULOW] = clock;
+
+ if (d->c->is_type_s) {
+ clock = devm_clk_get(d->dev, d->parent_names[2]);
+ if (IS_ERR(clock)) {
+ dev_err(d->dev, "could not get clkinphif clock\n");
+ return PTR_ERR(clock);
+ }
+ d->parent_clocks[TI_ADPLL_CLKINPHIF] = clock;
+ }
+
+ return 0;
+}
+
+static const struct ti_adpll_platform_data ti_adpll_type_s = {
+ .is_type_s = true,
+ .nr_max_inputs = MAX_ADPLL_INPUTS,
+ .nr_max_outputs = MAX_ADPLL_OUTPUTS,
+ .output_index = TI_ADPLL_S_DCOCLKLDO,
+};
+
+static const struct ti_adpll_platform_data ti_adpll_type_lj = {
+ .is_type_s = false,
+ .nr_max_inputs = MAX_ADPLL_INPUTS - 1,
+ .nr_max_outputs = MAX_ADPLL_OUTPUTS - 1,
+ .output_index = -EINVAL,
+};
+
+static const struct of_device_id ti_adpll_match[] = {
+ { .compatible = "ti,dm814-adpll-s-clock", &ti_adpll_type_s },
+ { .compatible = "ti,dm814-adpll-lj-clock", &ti_adpll_type_lj },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ti_adpll_match);
+
+static int ti_adpll_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ const struct ti_adpll_platform_data *pdata;
+ struct ti_adpll_data *d;
+ struct resource *res;
+ int err;
+
+ match = of_match_device(ti_adpll_match, dev);
+ if (match)
+ pdata = match->data;
+ else
+ return -ENODEV;
+
+ d = devm_kzalloc(dev, sizeof(*d), GFP_KERNEL);
+ if (!d)
+ return -ENOMEM;
+ d->dev = dev;
+ d->np = node;
+ d->c = pdata;
+ dev_set_drvdata(d->dev, d);
+ spin_lock_init(&d->lock);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ d->pa = res->start;
+
+ d->iobase = devm_ioremap_resource(dev, res);
+ if (IS_ERR(d->iobase)) {
+ dev_err(dev, "could not get IO base: %li\n",
+ PTR_ERR(d->iobase));
+ return PTR_ERR(d->iobase);
+ }
+
+ err = ti_adpll_init_registers(d);
+ if (err)
+ return err;
+
+ err = ti_adpll_init_inputs(d);
+ if (err)
+ return err;
+
+ d->clocks = devm_kzalloc(d->dev, sizeof(struct ti_adpll_clock) *
+ TI_ADPLL_NR_CLOCKS,
+ GFP_KERNEL);
+ if (!d->clocks)
+ return -ENOMEM;
+
+ err = ti_adpll_init_dco(d);
+ if (err) {
+ dev_err(dev, "could not register dco: %i\n", err);
+ goto free;
+ }
+
+ err = ti_adpll_init_children_adpll_s(d);
+ if (err)
+ goto free;
+ err = ti_adpll_init_children_adpll_lj(d);
+ if (err)
+ goto free;
+
+ err = of_clk_add_provider(d->np, of_clk_src_onecell_get, &d->outputs);
+ if (err)
+ goto free;
+
+ return 0;
+
+free:
+ WARN_ON(1);
+ ti_adpll_free_resources(d);
+
+ return err;
+}
+
+static int ti_adpll_remove(struct platform_device *pdev)
+{
+ struct ti_adpll_data *d = dev_get_drvdata(&pdev->dev);
+
+ ti_adpll_free_resources(d);
+
+ return 0;
+}
+
+static struct platform_driver ti_adpll_driver = {
+ .driver = {
+ .name = "ti-adpll",
+ .of_match_table = ti_adpll_match,
+ },
+ .probe = ti_adpll_probe,
+ .remove = ti_adpll_remove,
+};
+
+static int __init ti_adpll_init(void)
+{
+ return platform_driver_register(&ti_adpll_driver);
+}
+core_initcall(ti_adpll_init);
+
+static void __exit ti_adpll_exit(void)
+{
+ platform_driver_unregister(&ti_adpll_driver);
+}
+module_exit(ti_adpll_exit);
+
+MODULE_DESCRIPTION("Clock driver for dm814x ADPLL");
+MODULE_ALIAS("platform:dm814-adpll-clock");
+MODULE_AUTHOR("Tony LIndgren <tony@atomide.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/clk/ti/apll.c b/drivers/clk/ti/apll.c
index b336a8c11..6411e132f 100644
--- a/drivers/clk/ti/apll.c
+++ b/drivers/clk/ti/apll.c
@@ -140,11 +140,21 @@ static void __init omap_clk_register_apll(struct clk_hw *hw,
struct dpll_data *ad = clk_hw->dpll_data;
struct clk *clk;
- ad->clk_ref = of_clk_get(node, 0);
- ad->clk_bypass = of_clk_get(node, 1);
+ clk = of_clk_get(node, 0);
+ if (IS_ERR(clk)) {
+ pr_debug("clk-ref for %s not ready, retry\n",
+ node->name);
+ if (!ti_clk_retry_init(node, hw, omap_clk_register_apll))
+ return;
+
+ goto cleanup;
+ }
- if (IS_ERR(ad->clk_ref) || IS_ERR(ad->clk_bypass)) {
- pr_debug("clk-ref or clk-bypass for %s not ready, retry\n",
+ ad->clk_ref = __clk_get_hw(clk);
+
+ clk = of_clk_get(node, 1);
+ if (IS_ERR(clk)) {
+ pr_debug("clk-bypass for %s not ready, retry\n",
node->name);
if (!ti_clk_retry_init(node, hw, omap_clk_register_apll))
return;
@@ -152,6 +162,8 @@ static void __init omap_clk_register_apll(struct clk_hw *hw,
goto cleanup;
}
+ ad->clk_bypass = __clk_get_hw(clk);
+
clk = clk_register(NULL, &clk_hw->hw);
if (!IS_ERR(clk)) {
of_clk_add_provider(node, of_clk_src_simple_get, clk);
diff --git a/drivers/clk/ti/clk-814x.c b/drivers/clk/ti/clk-814x.c
index 9e85fcc74..52c6efc53 100644
--- a/drivers/clk/ti/clk-814x.c
+++ b/drivers/clk/ti/clk-814x.c
@@ -5,8 +5,10 @@
*/
#include <linux/kernel.h>
+#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clk/ti.h>
+#include <linux/of_platform.h>
#include "clock.h"
@@ -27,11 +29,62 @@ static struct ti_dt_clk dm814_clks[] = {
{ .node_name = NULL },
};
+static bool timer_clocks_initialized;
+
+static int __init dm814x_adpll_early_init(void)
+{
+ struct device_node *np;
+
+ if (!timer_clocks_initialized)
+ return -ENODEV;
+
+ np = of_find_node_by_name(NULL, "pllss");
+ if (!np) {
+ pr_err("Could not find node for plls\n");
+ return -ENODEV;
+ }
+
+ of_platform_populate(np, NULL, NULL, NULL);
+
+ return 0;
+}
+core_initcall(dm814x_adpll_early_init);
+
+static const char * const init_clocks[] = {
+ "pll040clkout", /* MPU 481c5040.adpll.clkout */
+ "pll290clkout", /* DDR 481c5290.adpll.clkout */
+};
+
+static int __init dm814x_adpll_enable_init_clocks(void)
+{
+ int i, err;
+
+ if (!timer_clocks_initialized)
+ return -ENODEV;
+
+ for (i = 0; i < ARRAY_SIZE(init_clocks); i++) {
+ struct clk *clock;
+
+ clock = clk_get(NULL, init_clocks[i]);
+ if (WARN(IS_ERR(clock), "could not find init clock %s\n",
+ init_clocks[i]))
+ continue;
+ err = clk_prepare_enable(clock);
+ if (WARN(err, "could not enable init clock %s\n",
+ init_clocks[i]))
+ continue;
+ }
+
+ return 0;
+}
+postcore_initcall(dm814x_adpll_enable_init_clocks);
+
int __init dm814x_dt_clk_init(void)
{
ti_dt_clocks_register(dm814_clks);
omap2_clk_disable_autoidle_all();
omap2_clk_enable_init_clocks(NULL, 0);
+ timer_clocks_initialized = true;
return 0;
}
diff --git a/drivers/clk/ti/clk.c b/drivers/clk/ti/clk.c
index b5bcd77e8..5fcf24775 100644
--- a/drivers/clk/ti/clk.c
+++ b/drivers/clk/ti/clk.c
@@ -305,8 +305,8 @@ struct clk __init *ti_clk_register_clk(struct ti_clk *setup)
case TI_CLK_FIXED:
fixed = setup->data;
- clk = clk_register_fixed_rate(NULL, setup->name, NULL,
- CLK_IS_ROOT, fixed->frequency);
+ clk = clk_register_fixed_rate(NULL, setup->name, NULL, 0,
+ fixed->frequency);
break;
case TI_CLK_MUX:
clk = ti_clk_register_mux(setup);
diff --git a/drivers/clk/ti/clkt_dpll.c b/drivers/clk/ti/clkt_dpll.c
index b5cc6f66a..032c658a5 100644
--- a/drivers/clk/ti/clkt_dpll.c
+++ b/drivers/clk/ti/clkt_dpll.c
@@ -254,7 +254,7 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
v >>= __ffs(dd->enable_mask);
if (_omap2_dpll_is_in_bypass(v))
- return clk_get_rate(dd->clk_bypass);
+ return clk_hw_get_rate(dd->clk_bypass);
v = ti_clk_ll_ops->clk_readl(dd->mult_div1_reg);
dpll_mult = v & dd->mult_mask;
@@ -262,7 +262,7 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
dpll_div = v & dd->div1_mask;
dpll_div >>= __ffs(dd->div1_mask);
- dpll_clk = (u64)clk_get_rate(dd->clk_ref) * dpll_mult;
+ dpll_clk = (u64)clk_hw_get_rate(dd->clk_ref) * dpll_mult;
do_div(dpll_clk, dpll_div + 1);
return dpll_clk;
@@ -301,7 +301,7 @@ long omap2_dpll_round_rate(struct clk_hw *hw, unsigned long target_rate,
dd = clk->dpll_data;
- ref_rate = clk_get_rate(dd->clk_ref);
+ ref_rate = clk_hw_get_rate(dd->clk_ref);
clk_name = clk_hw_get_name(hw);
pr_debug("clock: %s: starting DPLL round_rate, target rate %lu\n",
clk_name, target_rate);
diff --git a/drivers/clk/ti/clockdomain.c b/drivers/clk/ti/clockdomain.c
index b9bc3b8df..6cf9dd189 100644
--- a/drivers/clk/ti/clockdomain.c
+++ b/drivers/clk/ti/clockdomain.c
@@ -109,7 +109,7 @@ static void __init of_ti_clockdomain_setup(struct device_node *node)
struct clk_hw *clk_hw;
const char *clkdm_name = node->name;
int i;
- int num_clks;
+ unsigned int num_clks;
num_clks = of_clk_get_parent_count(node);
diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c
index dbef218fe..1cf70f452 100644
--- a/drivers/clk/ti/composite.c
+++ b/drivers/clk/ti/composite.c
@@ -28,8 +28,6 @@
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
-#define to_clk_divider(_hw) container_of(_hw, struct clk_divider, hw)
-
static unsigned long ti_composite_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
@@ -236,14 +234,14 @@ cleanup:
static void __init of_ti_composite_clk_setup(struct device_node *node)
{
- int num_clks;
+ unsigned int num_clks;
int i;
struct clk_hw_omap_comp *cclk;
/* Number of component clocks to be put inside this clock */
num_clks = of_clk_get_parent_count(node);
- if (num_clks < 1) {
+ if (!num_clks) {
pr_err("composite clk %s must have component(s)\n", node->name);
return;
}
@@ -273,13 +271,13 @@ CLK_OF_DECLARE(ti_composite_clock, "ti,composite-clock",
int __init ti_clk_add_component(struct device_node *node, struct clk_hw *hw,
int type)
{
- int num_parents;
+ unsigned int num_parents;
const char **parent_names;
struct component_clk *clk;
num_parents = of_clk_get_parent_count(node);
- if (num_parents < 1) {
+ if (!num_parents) {
pr_err("component-clock %s must have parent(s)\n", node->name);
return -EINVAL;
}
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index df2558350..b4e5de16e 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -26,8 +26,6 @@
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
-#define to_clk_divider(_hw) container_of(_hw, struct clk_divider, hw)
-
#define div_mask(d) ((1 << ((d)->width)) - 1)
static unsigned int _get_table_maxdiv(const struct clk_div_table *table)
diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c
index 5519b386e..3bc9959f7 100644
--- a/drivers/clk/ti/dpll.c
+++ b/drivers/clk/ti/dpll.c
@@ -147,11 +147,22 @@ static void __init _register_dpll(struct clk_hw *hw,
struct dpll_data *dd = clk_hw->dpll_data;
struct clk *clk;
- dd->clk_ref = of_clk_get(node, 0);
- dd->clk_bypass = of_clk_get(node, 1);
+ clk = of_clk_get(node, 0);
+ if (IS_ERR(clk)) {
+ pr_debug("clk-ref missing for %s, retry later\n",
+ node->name);
+ if (!ti_clk_retry_init(node, hw, _register_dpll))
+ return;
- if (IS_ERR(dd->clk_ref) || IS_ERR(dd->clk_bypass)) {
- pr_debug("clk-ref or clk-bypass missing for %s, retry later\n",
+ goto cleanup;
+ }
+
+ dd->clk_ref = __clk_get_hw(clk);
+
+ clk = of_clk_get(node, 1);
+
+ if (IS_ERR(clk)) {
+ pr_debug("clk-bypass missing for %s, retry later\n",
node->name);
if (!ti_clk_retry_init(node, hw, _register_dpll))
return;
@@ -159,6 +170,8 @@ static void __init _register_dpll(struct clk_hw *hw,
goto cleanup;
}
+ dd->clk_bypass = __clk_get_hw(clk);
+
/* register the clock */
clk = clk_register(NULL, &clk_hw->hw);
@@ -251,8 +264,8 @@ struct clk *ti_clk_register_dpll(struct ti_clk *setup)
dd->recal_en_bit = dpll->recal_en_bit;
dd->recal_st_bit = dpll->recal_st_bit;
- dd->clk_ref = clk_ref;
- dd->clk_bypass = clk_bypass;
+ dd->clk_ref = __clk_get_hw(clk_ref);
+ dd->clk_bypass = __clk_get_hw(clk_bypass);
if (dpll->flags & CLKF_CORE)
ops = &omap3_dpll_core_ck_ops;
@@ -361,7 +374,7 @@ static void __init of_ti_dpll_setup(struct device_node *node,
init->ops = ops;
init->num_parents = of_clk_get_parent_count(node);
- if (init->num_parents < 1) {
+ if (!init->num_parents) {
pr_err("%s must have parent(s)\n", node->name);
goto cleanup;
}
diff --git a/drivers/clk/ti/dpll3xxx.c b/drivers/clk/ti/dpll3xxx.c
index cc739291a..88f2ce81b 100644
--- a/drivers/clk/ti/dpll3xxx.c
+++ b/drivers/clk/ti/dpll3xxx.c
@@ -98,7 +98,7 @@ static u16 _omap3_dpll_compute_freqsel(struct clk_hw_omap *clk, u8 n)
unsigned long fint;
u16 f = 0;
- fint = clk_get_rate(clk->dpll_data->clk_ref) / n;
+ fint = clk_hw_get_rate(clk->dpll_data->clk_ref) / n;
pr_debug("clock: fint is %lu\n", fint);
@@ -460,12 +460,11 @@ int omap3_noncore_dpll_enable(struct clk_hw *hw)
parent = clk_hw_get_parent(hw);
- if (clk_hw_get_rate(hw) ==
- clk_hw_get_rate(__clk_get_hw(dd->clk_bypass))) {
- WARN_ON(parent != __clk_get_hw(dd->clk_bypass));
+ if (clk_hw_get_rate(hw) == clk_hw_get_rate(dd->clk_bypass)) {
+ WARN_ON(parent != dd->clk_bypass);
r = _omap3_noncore_dpll_bypass(clk);
} else {
- WARN_ON(parent != __clk_get_hw(dd->clk_ref));
+ WARN_ON(parent != dd->clk_ref);
r = _omap3_noncore_dpll_lock(clk);
}
@@ -513,13 +512,13 @@ int omap3_noncore_dpll_determine_rate(struct clk_hw *hw,
if (!dd)
return -EINVAL;
- if (clk_get_rate(dd->clk_bypass) == req->rate &&
+ if (clk_hw_get_rate(dd->clk_bypass) == req->rate &&
(dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
- req->best_parent_hw = __clk_get_hw(dd->clk_bypass);
+ req->best_parent_hw = dd->clk_bypass;
} else {
req->rate = omap2_dpll_round_rate(hw, req->rate,
&req->best_parent_rate);
- req->best_parent_hw = __clk_get_hw(dd->clk_ref);
+ req->best_parent_hw = dd->clk_ref;
}
req->best_parent_rate = req->rate;
@@ -577,7 +576,7 @@ int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
if (!dd)
return -EINVAL;
- if (clk_hw_get_parent(hw) != __clk_get_hw(dd->clk_ref))
+ if (clk_hw_get_parent(hw) != dd->clk_ref)
return -EINVAL;
if (dd->last_rounded_rate == 0)
diff --git a/drivers/clk/ti/dpll44xx.c b/drivers/clk/ti/dpll44xx.c
index 660d7436a..82c05b55a 100644
--- a/drivers/clk/ti/dpll44xx.c
+++ b/drivers/clk/ti/dpll44xx.c
@@ -94,7 +94,7 @@ static void omap4_dpll_lpmode_recalc(struct dpll_data *dd)
{
long fint, fout;
- fint = clk_get_rate(dd->clk_ref) / (dd->last_rounded_n + 1);
+ fint = clk_hw_get_rate(dd->clk_ref) / (dd->last_rounded_n + 1);
fout = fint * dd->last_rounded_m;
if ((fint < OMAP4_DPLL_LP_FINT_MAX) && (fout < OMAP4_DPLL_LP_FOUT_MAX))
@@ -212,13 +212,13 @@ int omap4_dpll_regm4xen_determine_rate(struct clk_hw *hw,
if (!dd)
return -EINVAL;
- if (clk_get_rate(dd->clk_bypass) == req->rate &&
+ if (clk_hw_get_rate(dd->clk_bypass) == req->rate &&
(dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
- req->best_parent_hw = __clk_get_hw(dd->clk_bypass);
+ req->best_parent_hw = dd->clk_bypass;
} else {
req->rate = omap4_dpll_regm4xen_round_rate(hw, req->rate,
&req->best_parent_rate);
- req->best_parent_hw = __clk_get_hw(dd->clk_ref);
+ req->best_parent_hw = dd->clk_ref;
}
req->best_parent_rate = req->rate;
diff --git a/drivers/clk/ti/gate.c b/drivers/clk/ti/gate.c
index 5429d3534..bc05f276f 100644
--- a/drivers/clk/ti/gate.c
+++ b/drivers/clk/ti/gate.c
@@ -24,8 +24,6 @@
#include "clock.h"
-#define to_clk_divider(_hw) container_of(_hw, struct clk_divider, hw)
-
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
diff --git a/drivers/clk/ti/mux.c b/drivers/clk/ti/mux.c
index dab9ba88b..44777ab6f 100644
--- a/drivers/clk/ti/mux.c
+++ b/drivers/clk/ti/mux.c
@@ -26,8 +26,6 @@
#undef pr_fmt
#define pr_fmt(fmt) "%s: " fmt, __func__
-#define to_clk_mux(_hw) container_of(_hw, struct clk_mux, hw)
-
static u8 ti_clk_mux_get_parent(struct clk_hw *hw)
{
struct clk_mux *mux = to_clk_mux(hw);
@@ -180,7 +178,7 @@ static void of_mux_clk_setup(struct device_node *node)
{
struct clk *clk;
void __iomem *reg;
- int num_parents;
+ unsigned int num_parents;
const char **parent_names;
u8 clk_mux_flags = 0;
u32 mask = 0;
@@ -263,7 +261,7 @@ struct clk_hw *ti_clk_build_component_mux(struct ti_clk_mux *setup)
static void __init of_ti_composite_mux_clk_setup(struct device_node *node)
{
struct clk_mux *mux;
- int num_parents;
+ unsigned int num_parents;
u32 val;
mux = kzalloc(sizeof(*mux), GFP_KERNEL);