diff options
| author | Subrata Banik <subrata.banik@intel.com> | 2019-07-18 08:24:12 +0530 |
|---|---|---|
| committer | Subrata Banik <subrata.banik@intel.com> | 2019-07-19 05:02:05 +0000 |
| commit | f208f4a12307bb91c0794eb81ee640caa828125b (patch) | |
| tree | 9333e754643ce63763c590d2b5e209754bdaa843 /src | |
| parent | 368ade72eabc203d0d06f20e2340a90b3a7c9472 (diff) | |
mb/google/hatch: Fix SD card is detected as read only issue
This patch configures GPIO pin GPP_G7 as NF1 with internal pull down.
As per schematics SD host controller SD_WP pin is not connected to
uSD card connector. Configured gpio pin as NF1 with internal pull down
in order to overcome gpio default state in hatch which makes SoC
SD_WP pin is enable.
BUG=b:137729527
BRANCH=None
TEST=Able to write/read data to/from sd card after mounting card device.
Change-Id: I0187267670e1dea3e1d5e83d0b29967714d6065e
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34396
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/hatch/variants/baseboard/gpio.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/mainboard/google/hatch/variants/baseboard/gpio.c b/src/mainboard/google/hatch/variants/baseboard/gpio.c index 6c6e04b3ce..8a0c948bbc 100644 --- a/src/mainboard/google/hatch/variants/baseboard/gpio.c +++ b/src/mainboard/google/hatch/variants/baseboard/gpio.c @@ -324,8 +324,12 @@ static const struct pad_config gpio_table[] = { PAD_CFG_NF(GPP_G5, NONE, PLTRST, NF1), /* G6 : SD_CLK */ PAD_CFG_NF(GPP_G6, NONE, DEEP, NF1), - /* G7 : SD_WP => NC */ - PAD_NC(GPP_G7, NONE), + /* G7 : SD_WP + * As per schematics SD host controller SD_WP pin is not connected to + * uSD card connector. In order to overcome gpio default state, ensures + * to configure gpio pin as NF1 with internal 20K pull down. + */ + PAD_CFG_NF(GPP_G7, DN_20K, DEEP, NF1), /* * H0 : HP_INT_L */ |