Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4991
-gerrit
commit 029e26074f09976b319d362aef760543c5836b87 Author: Shawn Nematbakhsh shawnn@chromium.org Date: Thu Dec 5 14:57:08 2013 -0800
rambi: Change eMMC pin PUs to 2K
Strengthen PUs on all eMMC pins to fix problems with eMMC not coming up on certain boards.
BUG=chrome-os-partner:24353 TEST=Manual. Burn FW on board that previously failed to boot eMMC, verify chromeos can now install + boot from eMMC. BRANCH=none
Change-Id: I7a9742968b8b8c2c42285ffc21de46aed9c87fb7 Signed-off-by: Shawn Nematbakhsh shawnn@chromium.org Reviewed-on: https://chromium-review.googlesource.com/178917 Reviewed-by: Aaron Durbin adurbin@chromium.org Signed-off-by: Aaron Durbin adurbin@chromium.org --- src/mainboard/google/rambi/gpio.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/src/mainboard/google/rambi/gpio.c b/src/mainboard/google/rambi/gpio.c index 68a5970..3bc6bd8 100644 --- a/src/mainboard/google/rambi/gpio.c +++ b/src/mainboard/google/rambi/gpio.c @@ -72,17 +72,18 @@ static const struct soc_gpio_map gpscore_gpio_map[] = { GPIO_NC, /* S0-SC013 - NC */ GPIO_INPUT, /* S0-SC014 - DET_TRIGGER - INT */ GPIO_INPUT, /* S0-SC015 - AJACK_MICPRES_L - INT */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC016 - MMC1_45_CLK */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC017 - MMC1_45_D[0] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC018 - MMC1_45_D[1] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC019 - MMC1_45_D[2] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC020 - MMC1_45_D[3] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC021 - MMC1_45_D[4] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC022 - MMC1_45_D[5] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC023 - MMC1_45_D[6] */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC024 - MMC1_45_D[7] */ + /* TODO(shawnn): Investigate if these PUs can be weakened. */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC016 - MMC1_45_CLK */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC017 - MMC1_45_D[0] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC018 - MMC1_45_D[1] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC019 - MMC1_45_D[2] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC020 - MMC1_45_D[3] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC021 - MMC1_45_D[4] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC022 - MMC1_45_D[5] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC023 - MMC1_45_D[6] */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC024 - MMC1_45_D[7] */ GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC025 - MMC1_45_CMD */ - GPIO_FUNC(3, PULL_UP, 10K), /* S0-SC026 - MMC1_45_RST */ + GPIO_FUNC(3, PULL_UP, 2K), /* S0-SC026 - MMC1_45_RST */ GPIO_NC, /* S0-SC027 - NC */ GPIO_NC, /* S0-SC028 - NC */ GPIO_NC, /* S0-SC029 - NC */