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| author | Jens Scharsig <js_at_ng@scharsoft.de> | 2010-02-14 12:20:43 +0100 |
|---|---|---|
| committer | Tom Rix <Tom.Rix@windriver.com> | 2010-03-07 12:36:36 -0600 |
| commit | 7cedb29872069e782f9f97cef4ab1232736e4c85 (patch) | |
| tree | e8b3284e4848002ca3da82daf4546eba7dac513f | |
| parent | 637833c2d669f9a370706e275e7103454c3c83ec (diff) | |
| download | u-boot-imx-7cedb29872069e782f9f97cef4ab1232736e4c85.zip u-boot-imx-7cedb29872069e782f9f97cef4ab1232736e4c85.tar.gz u-boot-imx-7cedb29872069e782f9f97cef4ab1232736e4c85.tar.bz2 | |
updates the at91 main_clock calculation
* updates the conditional main_clock calculation (if AT91_MAIN_CLOCK defined) to c structure SoC access
* add need register flags
Signed-off-by: Jens Scharsig <js_at_ng@scharsoft.de>
| -rw-r--r-- | cpu/arm926ejs/at91/clock.c | 7 | ||||
| -rw-r--r-- | include/asm-arm/arch-at91/at91_pmc.h | 3 |
2 files changed, 7 insertions, 3 deletions
diff --git a/cpu/arm926ejs/at91/clock.c b/cpu/arm926ejs/at91/clock.c index 444d42d..b06d760 100644 --- a/cpu/arm926ejs/at91/clock.c +++ b/cpu/arm926ejs/at91/clock.c @@ -157,9 +157,10 @@ int at91_clock_init(unsigned long main_clock) */ if (!main_clock) { do { - tmp = at91_sys_read(AT91_CKGR_MCFR); - } while (!(tmp & AT91_PMC_MAINRDY)); - main_clock = (tmp & AT91_PMC_MAINF) * (AT91_SLOW_CLOCK / 16); + tmp = readl(&pmc->mcfr); + } while (!(tmp & AT91_PMC_MCFR_MAINRDY)); + tmp &= AT91_PMC_MCFR_MAINF_MASK; + main_clock = tmp * (AT91_SLOW_CLOCK / 16); } #endif main_clk_rate_hz = main_clock; diff --git a/include/asm-arm/arch-at91/at91_pmc.h b/include/asm-arm/arch-at91/at91_pmc.h index 369b5d7..680fe33 100644 --- a/include/asm-arm/arch-at91/at91_pmc.h +++ b/include/asm-arm/arch-at91/at91_pmc.h @@ -71,6 +71,9 @@ typedef struct at91_pmc { #define AT91_PMC_PLLBR_USBDIV_2 0x10000000 #define AT91_PMC_PLLBR_USBDIV_4 0x20000000 +#define AT91_PMC_MCFR_MAINRDY 0x00010000 +#define AT91_PMC_MCFR_MAINF_MASK 0x0000FFFF + #define AT91_PMC_MCKR_CSS_SLOW 0x00000000 #define AT91_PMC_MCKR_CSS_MAIN 0x00000001 #define AT91_PMC_MCKR_CSS_PLLA 0x00000002 |