[coreboot-gerrit] Patch set updated for coreboot: 05c270c exynos5420: configure SD_0_CDn as VDDEN for eMMC
Patrick Georgi (patrick@georgi-clan.de)
gerrit at coreboot.org
Sat Dec 21 18:49:53 CET 2013
Patrick Georgi (patrick at georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4445
-gerrit
commit 05c270c372b94b0dff05ee5fd7cec1d1fda129a4
Author: David Hendricks <dhendrix at chromium.org>
Date: Thu Aug 8 14:51:07 2013 -0700
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 at chromium.org>
Change-Id: I19048d22b7dd00df1716b6b5b332a7eb70fe0836
Reviewed-on: https://gerrit.chromium.org/gerrit/65247
Reviewed-by: Gabe Black <gabeblack at chromium.org>
Commit-Queue: David Hendricks <dhendrix at chromium.org>
Tested-by: David Hendricks <dhendrix at chromium.org>
---
src/cpu/samsung/exynos5420/pinmux.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/cpu/samsung/exynos5420/pinmux.c b/src/cpu/samsung/exynos5420/pinmux.c
index 843a6db..573cdb6 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)
More information about the coreboot-gerrit
mailing list