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| author | Marek Vasut <marek.vasut@gmail.com> | 2012-01-30 14:05:39 +0000 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2012-03-27 09:41:16 +0200 |
| commit | a89300338a0d0c43ff21c50d793782c310c882ee (patch) | |
| tree | 9fdc69a18a21e00036054ea2eaa51d337c9d5354 /arch | |
| parent | a22429d2bfaa16588635a02958ebcd06114dd697 (diff) | |
| download | u-boot-imx-a89300338a0d0c43ff21c50d793782c310c882ee.zip u-boot-imx-a89300338a0d0c43ff21c50d793782c310c882ee.tar.gz u-boot-imx-a89300338a0d0c43ff21c50d793782c310c882ee.tar.bz2 | |
i.MX28: Make the stabilization delays shorter
Cut down the VDDIO/VDDA regulator stabilization delays to 500 uS. That should be
enough according to the datasheet and bootlets.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Robert Deliën <robert@delien.nl>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx28/spl_power_init.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c index 271da8d..aa4117d 100644 --- a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c +++ b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c @@ -729,7 +729,7 @@ void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout) if (powered_by_linreg || (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO)) - early_delay(1500); + early_delay(500); else { while (!(readl(&power_regs->hw_power_sts) & POWER_STS_DC_OK)) @@ -766,7 +766,7 @@ void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout) if (powered_by_linreg || (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO)) - early_delay(1500); + early_delay(500); else { while (!(readl(&power_regs->hw_power_sts) & POWER_STS_DC_OK)) @@ -826,7 +826,7 @@ void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout) if (powered_by_linreg || (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO)) - early_delay(1500); + early_delay(500); else { while (!(readl(&power_regs->hw_power_sts) & POWER_STS_DC_OK)) @@ -863,7 +863,7 @@ void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout) if (powered_by_linreg || (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO)) - early_delay(1500); + early_delay(500); else { while (!(readl(&power_regs->hw_power_sts) & POWER_STS_DC_OK)) |