From c4a9d7ae42fd54f74f666733574c0b4e9e3667b2 Mon Sep 17 00:00:00 2001
From: Wenbin Mei <wenbin.mei@mediatek.com>
Date: Wed, 31 Mar 2021 17:59:22 +0800
Subject: mb/google/asurada: early-init eMMC

Some eMMCs need 80+ms for CMD1 to complete. And the payload may need to
access eMMC in the very early stage (for example, Depthcharge needs it
20ms after started) so we have to start initialization in coreboot.
On Hayato Chromebook this can save ~100ms in total.

BUG=b:177389446
TEST=emerge-asurada coreboot
BRANCH=asurada

Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Change-Id: I2f58d203e969dc1a13a479d7dc63b1b162a9ae3f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51973
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/google/asurada/mainboard.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/mainboard/google/asurada/mainboard.c')

diff --git a/src/mainboard/google/asurada/mainboard.c b/src/mainboard/google/asurada/mainboard.c
index 16325c8602..86e8d5f82a 100644
--- a/src/mainboard/google/asurada/mainboard.c
+++ b/src/mainboard/google/asurada/mainboard.c
@@ -16,6 +16,7 @@
 #include <soc/gpio.h>
 #include <soc/gpio_common.h>
 #include <soc/i2c.h>
+#include <soc/msdc.h>
 #include <soc/mtcmos.h>
 #include <soc/regulator.h>
 #include <soc/spm.h>
@@ -25,6 +26,9 @@
 
 #include <arm-trusted-firmware/include/export/plat/mediatek/common/plat_params_exp.h>
 
+#define MSDC0_BASE	0x11f60000
+#define MSDC0_TOP_BASE	0x11f50000
+
 #define MSDC0_DRV_MASK	0x3fffffff
 #define MSDC1_DRV_MASK	0x3ffff000
 #define MSDC0_DRV_VALUE	0x24924924
@@ -154,6 +158,8 @@ static void configure_emmc(void)
 
 	/* set eMMC cmd/dat/clk/ds/rstb pins driving to 10mA */
 	clrsetbits32(gpio_base, MSDC0_DRV_MASK, MSDC0_DRV_VALUE);
+
+	mtk_emmc_early_init((void *)MSDC0_BASE, (void *)MSDC0_TOP_BASE);
 }
 
 static void configure_sdcard(void)
-- 
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