m68knommu: Add clk definitions for m520x.

The 520x has individually controllable clocks for its peripherals.  Add clk
definitions for these and add default initialization of either enabled or
disabled for all of the clocks.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

2 files changed, 107 insertions, 0 deletions

diff --git a/arch/m68k/include/asm/m520xsim.h b/arch/m68k/include/asm/m520xsim.h
index b1bc76f1decc..db3f8ee4a6c6 100644
--- a/arch/m68k/include/asm/m520xsim.h
+++ b/arch/m68k/include/asm/m520xsim.h
@@ -190,5 +190,15 @@
 #define	MCF_RCR_SWRESET		0x80		/* Software reset bit */
 #define	MCF_RCR_FRCSTOUT	0x40		/* Force external reset */
 
+/*
+ *  Power Management.
+ */
+#define MCFPM_WCR		0xfc040013
+#define MCFPM_PPMSR0		0xfc04002c
+#define MCFPM_PPMCR0		0xfc04002d
+#define MCFPM_PPMHR0		0xfc040030
+#define MCFPM_PPMLR0		0xfc040034
+#define MCFPM_LPCR		0xfc0a0007
+
 /****************************************************************************/
 #endif  /* m520xsim_h */
diff --git a/arch/m68k/platform/coldfire/m520x.c b/arch/m68k/platform/coldfire/m520x.c
index 09df4b89e8be..ea1be0e98ad6 100644
--- a/arch/m68k/platform/coldfire/m520x.c
+++ b/arch/m68k/platform/coldfire/m520x.c
@@ -19,6 +19,102 @@
 #include <asm/coldfire.h>
 #include <asm/mcfsim.h>
 #include <asm/mcfuart.h>
+#include <asm/mcfclk.h>
+
+/***************************************************************************/
+
+DEFINE_CLK(0, "flexbus", 2, MCF_CLK);
+DEFINE_CLK(0, "fec.0", 12, MCF_CLK);
+DEFINE_CLK(0, "edma", 17, MCF_CLK);
+DEFINE_CLK(0, "intc.0", 18, MCF_CLK);
+DEFINE_CLK(0, "iack.0", 21, MCF_CLK);
+DEFINE_CLK(0, "mcfi2c.0", 22, MCF_CLK);
+DEFINE_CLK(0, "mcfqspi.0", 23, MCF_CLK);
+DEFINE_CLK(0, "mcfuart.0", 24, MCF_BUSCLK);
+DEFINE_CLK(0, "mcfuart.1", 25, MCF_BUSCLK);
+DEFINE_CLK(0, "mcfuart.2", 26, MCF_BUSCLK);
+DEFINE_CLK(0, "mcftmr.0", 28, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.1", 29, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.2", 30, MCF_CLK);
+DEFINE_CLK(0, "mcftmr.3", 31, MCF_CLK);
+
+DEFINE_CLK(0, "mcfpit.0", 32, MCF_CLK);
+DEFINE_CLK(0, "mcfpit.1", 33, MCF_CLK);
+DEFINE_CLK(0, "mcfeport.0", 34, MCF_CLK);
+DEFINE_CLK(0, "mcfwdt.0", 35, MCF_CLK);
+DEFINE_CLK(0, "pll.0", 36, MCF_CLK);
+DEFINE_CLK(0, "sys.0", 40, MCF_BUSCLK);
+DEFINE_CLK(0, "gpio.0", 41, MCF_BUSCLK);
+DEFINE_CLK(0, "sdram.0", 42, MCF_CLK);
+
+struct clk *mcf_clks[] = {
+	&__clk_0_2, /* flexbus */
+	&__clk_0_12, /* fec.0 */
+	&__clk_0_17, /* edma */
+	&__clk_0_18, /* intc.0 */
+	&__clk_0_21, /* iack.0 */
+	&__clk_0_22, /* mcfi2c.0 */
+	&__clk_0_23, /* mcfqspi.0 */
+	&__clk_0_24, /* mcfuart.0 */
+	&__clk_0_25, /* mcfuart.1 */
+	&__clk_0_26, /* mcfuart.2 */
+	&__clk_0_28, /* mcftmr.0 */
+	&__clk_0_29, /* mcftmr.1 */
+	&__clk_0_30, /* mcftmr.2 */
+	&__clk_0_31, /* mcftmr.3 */
+
+	&__clk_0_32, /* mcfpit.0 */
+	&__clk_0_33, /* mcfpit.1 */
+	&__clk_0_34, /* mcfeport.0 */
+	&__clk_0_35, /* mcfwdt.0 */
+	&__clk_0_36, /* pll.0 */
+	&__clk_0_40, /* sys.0 */
+	&__clk_0_41, /* gpio.0 */
+	&__clk_0_42, /* sdram.0 */
+NULL,
+};
+
+static struct clk * const enable_clks[] __initconst = {
+	&__clk_0_2, /* flexbus */
+	&__clk_0_18, /* intc.0 */
+	&__clk_0_21, /* iack.0 */
+	&__clk_0_24, /* mcfuart.0 */
+	&__clk_0_25, /* mcfuart.1 */
+	&__clk_0_26, /* mcfuart.2 */
+
+	&__clk_0_32, /* mcfpit.0 */
+	&__clk_0_33, /* mcfpit.1 */
+	&__clk_0_34, /* mcfeport.0 */
+	&__clk_0_36, /* pll.0 */
+	&__clk_0_40, /* sys.0 */
+	&__clk_0_41, /* gpio.0 */
+	&__clk_0_42, /* sdram.0 */
+};
+
+static struct clk * const disable_clks[] __initconst = {
+	&__clk_0_12, /* fec.0 */
+	&__clk_0_17, /* edma */
+	&__clk_0_22, /* mcfi2c.0 */
+	&__clk_0_23, /* mcfqspi.0 */
+	&__clk_0_28, /* mcftmr.0 */
+	&__clk_0_29, /* mcftmr.1 */
+	&__clk_0_30, /* mcftmr.2 */
+	&__clk_0_31, /* mcftmr.3 */
+	&__clk_0_35, /* mcfwdt.0 */
+};
+
+
+static void __init m520x_clk_init(void)
+{
+	unsigned i;
+
+	/* make sure these clocks are enabled */
+	for (i = 0; i < ARRAY_SIZE(enable_clks); ++i)
+		__clk_init_enabled(enable_clks[i]);
+	/* make sure these clocks are disabled */
+	for (i = 0; i < ARRAY_SIZE(disable_clks); ++i)
+		__clk_init_disabled(disable_clks[i]);
+}
 
 /***************************************************************************/
 
@@ -77,6 +173,7 @@ static void __init m520x_fec_init(void)
 void __init config_BSP(char *commandp, int size)
 {
 	mach_sched_init = hw_timer_init;
+	m520x_clk_init();
 	m520x_uarts_init();
 	m520x_fec_init();
 #if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI)