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| author | Vincent Palatin <vpalatin@chromium.org> | 2015-04-03 11:50:57 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-04-04 04:02:18 +0000 |
| commit | 1f7961e69334ac0b34ba4c55d88ca4088060d72f (patch) | |
| tree | e67090d7cc6b48b475a626014c0368eda17b9c69 | |
| parent | 25e6261ce5edec625df03d9647bfbb93a1990b53 (diff) | |
| download | chrome-ec-release-R43-6946.B.tar.gz | |
ryu: workaround MAX77620 shutdown issuestabilize-6946.55.Brelease-R43-6946.B
When shutting down the MAX77620 PMIC by asseting its SHDN pin, the
EN_PP3300 output of the PMIC (GPIO3) is not going off keeping the PP3300
rail up. Workaround that issue by removing the pull-up on EN_PP3300 when
we assert SHDN.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=chrome-os-partner:38689
TEST=on a P5 board, type "apshutdown" and see the power state machine
going to S5, type "powerbtn" and see it going back to S0.
Change-Id: I0e5fba6da118d931b07fff58088604ee00a6bcdd
Reviewed-on: https://chromium-review.googlesource.com/263958
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
| -rw-r--r-- | power/tegra.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/power/tegra.c b/power/tegra.c index 5efd41e61d..2bdba8b5f9 100644 --- a/power/tegra.c +++ b/power/tegra.c @@ -144,6 +144,11 @@ static void set_ap_reset(int asserted) */ static void set_pmic_pwron(int asserted) { +#ifdef BOARD_RYU + /* TODO(crosbug.com/p/38689) Workaround for MAX77620 PMIC issue */ + if (asserted) + gpio_set_flags(GPIO_EN_PP3300_RSVD, GPIO_INPUT | GPIO_PULL_UP); +#endif /* BOARD_RYU */ /* Signal is active-low */ gpio_set_level(GPIO_PMIC_PWRON_L, asserted ? 0 : 1); } @@ -158,6 +163,11 @@ static void set_pmic_therm(int asserted) { /* Signal is active-low */ gpio_set_level(GPIO_PMIC_THERM_L, asserted ? 0 : 1); +#ifdef BOARD_RYU + /* TODO(crosbug.com/p/38689) Workaround for MAX77620 PMIC issue */ + if (asserted) + gpio_set_flags(GPIO_EN_PP3300_RSVD, GPIO_INPUT); +#endif /* BOARD_RYU */ } /** |