diff options
| author | Yu-Ping Wu <yupingso@google.com> | 2019-10-23 16:51:26 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-24 15:49:10 +0000 |
| commit | ea4bda55d62d90e008a5aa455f24adcd7759b37a (patch) | |
| tree | c79d6b182d378d273fded70da5f1485c270b82bc /src | |
| parent | 241f0a559347a9ee5325b94c0a021dd404da4030 (diff) | |
soc/mediatek/mt8183: Add udelay after setting voltages
The SOC DRAM team suggested to delay at least 1us after setting new
voltage in PMIC wrapper so the new value can be effective.
BRANCH=kukui
BUG=b:142358843
TEST=emerge-kukui coreboot
Change-Id: I19d236769c3c0c87513ea4a0a3f64b83e3a844c2
Signed-off-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36254
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/mediatek/mt8183/mt6358.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8183/mt6358.c b/src/soc/mediatek/mt8183/mt6358.c index cee9ef2239..4ab0e7ed76 100644 --- a/src/soc/mediatek/mt8183/mt6358.c +++ b/src/soc/mediatek/mt8183/mt6358.c @@ -874,6 +874,7 @@ void pmic_set_vcore_vol(unsigned int vcore_uv) pwrap_write_field(PMIC_VCORE_OP_EN, 1, 0x7F, 0); pwrap_write_field(PMIC_VCORE_VOSEL, vol_reg, 0x7F, 0); + udelay(1); } unsigned int pmic_get_vdram1_vol(void) @@ -895,6 +896,7 @@ void pmic_set_vdram1_vol(unsigned int vdram_uv) pwrap_write_field(PMIC_VDRAM1_OP_EN, 1, 0x7F, 0); pwrap_write_field(PMIC_VDRAM1_VOSEL, vol_reg, 0x7F, 0); + udelay(1); } unsigned int pmic_get_vddq_vol(void) |