diff options
Diffstat (limited to 'arch/arm/include/asm/arch-at91/clk.h')
| -rw-r--r-- | arch/arm/include/asm/arch-at91/clk.h | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/arch/arm/include/asm/arch-at91/clk.h b/arch/arm/include/asm/arch-at91/clk.h index 4076a78a86..1d45e2dc11 100644 --- a/arch/arm/include/asm/arch-at91/clk.h +++ b/arch/arm/include/asm/arch-at91/clk.h @@ -10,6 +10,7 @@ #define __ASM_ARM_ARCH_CLK_H__ #include <asm/arch/hardware.h> +#include <asm/arch/at91_pmc.h> #include <asm/global_data.h> static inline unsigned long get_cpu_clk_rate(void) @@ -48,14 +49,34 @@ static inline u32 get_pllb_init(void) return gd->arch.at91_pllb_usb_init; } +#ifdef CPU_HAS_H32MXDIV +static inline unsigned int get_h32mxdiv(void) +{ + struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC; + + return readl(&pmc->mckr) & AT91_PMC_MCKR_H32MXDIV; +} +#else +static inline unsigned int get_h32mxdiv(void) +{ + return 0; +} +#endif + static inline unsigned long get_macb_pclk_rate(unsigned int dev_id) { - return get_mck_clk_rate(); + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); } static inline unsigned long get_usart_clk_rate(unsigned int dev_id) { - return get_mck_clk_rate(); + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); } static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id) @@ -65,17 +86,34 @@ static inline unsigned long get_lcdc_clk_rate(unsigned int dev_id) static inline unsigned long get_spi_clk_rate(unsigned int dev_id) { - return get_mck_clk_rate(); + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); } static inline unsigned long get_twi_clk_rate(unsigned int dev_id) { - return get_mck_clk_rate(); + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); } static inline unsigned long get_mci_clk_rate(void) { - return get_mck_clk_rate(); + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); +} + +static inline unsigned long get_pit_clk_rate(void) +{ + if (get_h32mxdiv()) + return get_mck_clk_rate() / 2; + else + return get_mck_clk_rate(); } int at91_clock_init(unsigned long main_clock); |