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authorMarek Vasut <marek.vasut@gmail.com>2012-01-30 14:05:39 +0000
committerStefano Babic <sbabic@denx.de>2012-03-27 09:41:16 +0200
commita89300338a0d0c43ff21c50d793782c310c882ee (patch)
tree9fdc69a18a21e00036054ea2eaa51d337c9d5354 /arch
parenta22429d2bfaa16588635a02958ebcd06114dd697 (diff)
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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 Deliƫn <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.c8
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))