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i.MX28: Make the stabilization delays shorter

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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>
master
Marek Vasut 13 years ago committed by Stefano Babic
parent a22429d2bf
commit a89300338a
1 changed files with 4 additions and 4 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 8
      arch/arm/cpu/arm926ejs/mx28/spl_power_init.c

8
arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
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@ -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))

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