Patch set updated for coreboot: 7bbb372 exynos5420: configure SD_0_CDn as VDDEN for eMMC

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4445

-gerrit

commit 7bbb37294e29427b854c569459091be166634123
Author: David Hendricks 
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

Change-Id: I19048d22b7dd00df1716b6b5b332a7eb70fe0836
    Reviewed-on: https://gerrit.chromium.org/gerrit/65247
    Reviewed-by: Gabe Black 
    Commit-Queue: David Hendricks 
    Tested-by: David Hendricks 
---
 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)