From: "Mathieu J. Poirier" mathieu.poirier@linaro.org
Signed-off-by: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: John Rigby john.rigby@linaro.org --- arch/arm/cpu/armv7/u8500/clock.c | 34 +++++++++++++++++++++++++++++++ arch/arm/cpu/armv7/u8500/cpu.c | 2 + arch/arm/include/asm/arch-u8500/clock.h | 5 +--- 3 files changed, 37 insertions(+), 4 deletions(-)
diff --git a/arch/arm/cpu/armv7/u8500/clock.c b/arch/arm/cpu/armv7/u8500/clock.c index 9e3b873..fcfd61a 100644 --- a/arch/arm/cpu/armv7/u8500/clock.c +++ b/arch/arm/cpu/armv7/u8500/clock.c @@ -54,3 +54,37 @@ void u8500_clock_enable(int periph, int cluster, int kern) if (cluster != -1) writel(1 << cluster, &clkrst->pcken); } + +void db8500_clocks_init(void) +{ + /* + * Enable all clocks. This is u-boot, we can enable it all. There is no + * powersave in u-boot. + */ + + u8500_clock_enable(1, 9, -1); /* GPIO0 */ + u8500_clock_enable(2, 11, -1);/* GPIO1 */ + u8500_clock_enable(3, 8, -1); /* GPIO2 */ + u8500_clock_enable(5, 1, -1); /* GPIO3 */ + u8500_clock_enable(3, 6, 6); /* UART2 */ + u8500_clock_enable(3, 3, 3); /* I2C0 */ + u8500_clock_enable(1, 5, 5); /* SDI0 */ + u8500_clock_enable(2, 4, 2); /* SDI4 */ + u8500_clock_enable(6, 6, -1); /* MTU0 */ + u8500_clock_enable(3, 4, 4); /* SDI2 */ + + /* + * Enabling clocks for all devices which are AMBA devices in the + * kernel. Otherwise they will not get probe()'d because the + * peripheral ID register will not be powered. + */ + + /* XXX: some of these differ between ED/V1 */ + + u8500_clock_enable(1, 1, 1); /* UART1 */ + u8500_clock_enable(1, 0, 0); /* UART0 */ + u8500_clock_enable(3, 2, 2); /* SSP1 */ + u8500_clock_enable(3, 1, 1); /* SSP0 */ + u8500_clock_enable(2, 8, -1); /* SPI0 */ + u8500_clock_enable(2, 5, 3); /* MSP2 */ +} diff --git a/arch/arm/cpu/armv7/u8500/cpu.c b/arch/arm/cpu/armv7/u8500/cpu.c index 04f4b19..fece201 100644 --- a/arch/arm/cpu/armv7/u8500/cpu.c +++ b/arch/arm/cpu/armv7/u8500/cpu.c @@ -27,6 +27,7 @@ #include <common.h> #include <asm/io.h> #include <asm/arch/prcmu.h> +#include <asm/arch/clock.h>
#ifdef CONFIG_ARCH_CPU_INIT /* @@ -35,6 +36,7 @@ int arch_cpu_init(void) { db8500_prcmu_init(); + db8500_clocks_init();
return 0; } diff --git a/arch/arm/include/asm/arch-u8500/clock.h b/arch/arm/include/asm/arch-u8500/clock.h index b00ab0d..2a14784 100644 --- a/arch/arm/include/asm/arch-u8500/clock.h +++ b/arch/arm/include/asm/arch-u8500/clock.h @@ -64,9 +64,6 @@ struct prcmu {
extern void u8500_clock_enable(int periph, int kern, int cluster);
-static inline void u8500_prcmu_enable(unsigned int *reg) -{ - writel(readl(reg) | (1 << 8), reg); -} +void db8500_clocks_init(void);
#endif /* __ASM_ARCH_CLOCK */