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| author | Douglas Anderson <dianders@chromium.org> | 2017-04-17 13:18:11 -0700 |
|---|---|---|
| committer | Julius Werner <jwerner@chromium.org> | 2017-04-19 22:49:01 +0200 |
| commit | 992c7dba7e8513a63222b4d34b218864df20a609 (patch) | |
| tree | fa1e60e31de0e7ce42f143f42d0d66952033eedc /src/mainboard/google/gru/romstage.c | |
| parent | 38bee539b12c11c3bba453858b748fd741097f76 (diff) | |
| download | coreboot-992c7dba7e8513a63222b4d34b218864df20a609.tar.gz coreboot-992c7dba7e8513a63222b4d34b218864df20a609.tar.bz2 coreboot-992c7dba7e8513a63222b4d34b218864df20a609.zip | |
google/gru: change kevin boot-time center logic voltage to 925mV
Kevin's center logic isn't super clean so it needs 925 mV for center
logic. All newer gru variants only need 900 mV.
BRANCH=gru
BUG=b:37429075
TEST=Reboot tests
Change-Id: I8c3bd6c245700b23c27cd5758c35c9993f801cb4
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/479463
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19357
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/mainboard/google/gru/romstage.c')
| -rw-r--r-- | src/mainboard/google/gru/romstage.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mainboard/google/gru/romstage.c b/src/mainboard/google/gru/romstage.c index 4ea53181ae0e..7c0dfd0594fb 100644 --- a/src/mainboard/google/gru/romstage.c +++ b/src/mainboard/google/gru/romstage.c @@ -38,7 +38,13 @@ static void init_dvs_outputs(void) { pwm_regulator_configure(PWM_REGULATOR_GPU, 900); pwm_regulator_configure(PWM_REGULATOR_BIG, 900); - pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 900); + + /* Kevin's logic rail has some ripple, so up the voltage a bit */ + if (IS_ENABLED(CONFIG_BOARD_GOOGLE_KEVIN)) + pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 925); + else + pwm_regulator_configure(PWM_REGULATOR_CENTERLOG, 900); + /* Allow time for the regulators to settle */ udelay(500); } |