Change in coreboot[master]: soc/mediatek/mt8186: add early initialization for eMMC

[Hung-Te Lin (Code Review)]

Hung-Te Lin has submitted this change. ( https://review.coreboot.org/c/coreboot/+/59294 )

Change subject: soc/mediatek/mt8186: add early initialization for eMMC
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soc/mediatek/mt8186: add early initialization for 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.

TEST=boot kernel from eMMC ok
BUG=b:202871018

Signed-off-by: Rex-BC Chen 
Change-Id: I3bc06b1fc506b1d6f54f7f456117d22477a87e29
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59294
Tested-by: build bot (Jenkins) 
Reviewed-by: Yu-Ping Wu 
---
M src/mainboard/google/corsola/mainboard.c
M src/soc/mediatek/common/include/soc/msdc.h
M src/soc/mediatek/mt8186/msdc.c
3 files changed, 6 insertions(+), 3 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Yu-Ping Wu: Looks good to me, approved

diff --git a/src/mainboard/google/corsola/mainboard.c b/src/mainboard/google/corsola/mainboard.c
index b13eb15..75b8bb5 100644
--- a/src/mainboard/google/corsola/mainboard.c
+++ b/src/mainboard/google/corsola/mainboard.c
@@ -6,7 +6,7 @@

static void mainboard_init(struct device *dev)
 {
-	mtk_msdc_configure_emmc();
+	mtk_msdc_configure_emmc(true);
    mtk_msdc_configure_sdcard();
    setup_usb_host();
 }
diff --git a/src/soc/mediatek/common/include/soc/msdc.h b/src/soc/mediatek/common/include/soc/msdc.h
index f25c3d0..b7f7fd7 100644
--- a/src/soc/mediatek/common/include/soc/msdc.h
+++ b/src/soc/mediatek/common/include/soc/msdc.h
@@ -165,7 +165,7 @@
 #define msdc_error(format...) printk(BIOS_ERR, "ERROR: " format)

int mtk_emmc_early_init(void *base, void *top_base);
-void mtk_msdc_configure_emmc(void);
+void mtk_msdc_configure_emmc(bool is_early_init);
 void mtk_msdc_configure_sdcard(void);

#endif /* SOC_MEDIATEK_COMMON_MSDC_H */
diff --git a/src/soc/mediatek/mt8186/msdc.c b/src/soc/mediatek/mt8186/msdc.c
index f1c2004..cfdb0f2 100644
--- a/src/soc/mediatek/mt8186/msdc.c
+++ b/src/soc/mediatek/mt8186/msdc.c
@@ -33,7 +33,7 @@
    MSDC1_GPIO_MODE1_BASE = 0x100053b0,
 };

-void mtk_msdc_configure_emmc(void)
+void mtk_msdc_configure_emmc(bool is_early_init)
 {
    void *gpio_base = (void *)IOCFG_LT_BASE;
    int i;
@@ -58,6 +58,9 @@

/* set eMMC cmd/dat/clk pins driving to 8mA */
    SET32_BITFIELDS(gpio_base, MSDC0_DRV, MSDC0_DRV_VALUE);
+
+	if (is_early_init)
+		mtk_emmc_early_init((void *)MSDC0_BASE, (void *)MSDC0_TOP_BASE);
 }

void mtk_msdc_configure_sdcard(void)