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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 /arch/m68k/coldfire/m523x.c
Initial import
Diffstat (limited to 'arch/m68k/coldfire/m523x.c')
-rw-r--r--arch/m68k/coldfire/m523x.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/m68k/coldfire/m523x.c b/arch/m68k/coldfire/m523x.c
new file mode 100644
index 000000000..a191a467e
--- /dev/null
+++ b/arch/m68k/coldfire/m523x.c
@@ -0,0 +1,86 @@
+/***************************************************************************/
+
+/*
+ * m523x.c -- platform support for ColdFire 523x based boards
+ *
+ * Sub-architcture dependent initialization code for the Freescale
+ * 523x CPUs.
+ *
+ * Copyright (C) 1999-2005, Greg Ungerer (gerg@snapgear.com)
+ * Copyright (C) 2001-2003, SnapGear Inc. (www.snapgear.com)
+ */
+
+/***************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <asm/machdep.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(pll, "pll.0", MCF_CLK);
+DEFINE_CLK(sys, "sys.0", MCF_BUSCLK);
+DEFINE_CLK(mcfpit0, "mcfpit.0", MCF_CLK);
+DEFINE_CLK(mcfpit1, "mcfpit.1", MCF_CLK);
+DEFINE_CLK(mcfpit2, "mcfpit.2", MCF_CLK);
+DEFINE_CLK(mcfpit3, "mcfpit.3", MCF_CLK);
+DEFINE_CLK(mcfuart0, "mcfuart.0", MCF_BUSCLK);
+DEFINE_CLK(mcfuart1, "mcfuart.1", MCF_BUSCLK);
+DEFINE_CLK(mcfuart2, "mcfuart.2", MCF_BUSCLK);
+DEFINE_CLK(mcfqspi0, "mcfqspi.0", MCF_BUSCLK);
+DEFINE_CLK(fec0, "fec.0", MCF_BUSCLK);
+
+struct clk *mcf_clks[] = {
+ &clk_pll,
+ &clk_sys,
+ &clk_mcfpit0,
+ &clk_mcfpit1,
+ &clk_mcfpit2,
+ &clk_mcfpit3,
+ &clk_mcfuart0,
+ &clk_mcfuart1,
+ &clk_mcfuart2,
+ &clk_mcfqspi0,
+ &clk_fec0,
+ NULL
+};
+
+/***************************************************************************/
+
+static void __init m523x_qspi_init(void)
+{
+#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)
+ u16 par;
+
+ /* setup QSPS pins for QSPI with gpio CS control */
+ writeb(0x1f, MCFGPIO_PAR_QSPI);
+ /* and CS2 & CS3 as gpio */
+ par = readw(MCFGPIO_PAR_TIMER);
+ par &= 0x3f3f;
+ writew(par, MCFGPIO_PAR_TIMER);
+#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */
+}
+
+/***************************************************************************/
+
+static void __init m523x_fec_init(void)
+{
+ /* Set multi-function pins to ethernet use */
+ writeb(readb(MCFGPIO_PAR_FECI2C) | 0xf0, MCFGPIO_PAR_FECI2C);
+}
+
+/***************************************************************************/
+
+void __init config_BSP(char *commandp, int size)
+{
+ mach_sched_init = hw_timer_init;
+ m523x_fec_init();
+ m523x_qspi_init();
+}
+
+/***************************************************************************/