diff options
| author | David Hendricks <dhendrix@chromium.org> | 2013-08-08 14:51:07 -0700 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2013-12-21 22:46:01 +0100 |
| commit | b9f267ce231635029d37d42d31702ab979784da5 (patch) | |
| tree | c791d4cb8c3fec31361fac6e7104b2c91c6073b6 /src/cpu/samsung/exynos5420 | |
| parent | 93951f4ed8b15c7140961a24d7fa756e3ec204ff (diff) | |
exynos5420: configure SD_0_CDn as VDDEN for eMMC
On Exynos5420 the MMC channel 0 is connected to eMMC
Which does not have a card detection pin. Also this pin
is connected as VDDEN to PMIC.
This is ported from https://gerrit.chromium.org/gerrit/#/c/60732/
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Change-Id: I19048d22b7dd00df1716b6b5b332a7eb70fe0836
Reviewed-on: https://gerrit.chromium.org/gerrit/65247
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/4445
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/cpu/samsung/exynos5420')
| -rw-r--r-- | src/cpu/samsung/exynos5420/pinmux.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/cpu/samsung/exynos5420/pinmux.c b/src/cpu/samsung/exynos5420/pinmux.c index 843a6db723..573cdb679c 100644 --- a/src/cpu/samsung/exynos5420/pinmux.c +++ b/src/cpu/samsung/exynos5420/pinmux.c @@ -81,7 +81,14 @@ static void exynos_pinmux_sdmmc(int start, int start_ext) void exynos_pinmux_sdmmc0(void) { exynos_pinmux_sdmmc(GPIO_C00, GPIO_C30); - gpio_set_pull(GPIO_C02, GPIO_PULL_UP); + /* + * MMC0 is intended to be used for eMMC. The card detect pin is used + * as a VDDEN signal to power on the eMMC. The 5420 iROM makes this + * same assumption. + */ + gpio_set_pull(GPIO_C02, GPIO_PULL_NONE); + gpio_cfg_pin(GPIO_C02, GPIO_OUTPUT); + gpio_set_value(GPIO_C02, 1); } void exynos_pinmux_sdmmc1(void) |