From 6453cffd215666162fdee2d9cb0660b7ff68dcc7 Mon Sep 17 00:00:00 2001
From: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Date: Mon, 30 Jan 2023 18:58:01 +0800
Subject: mb/google/geralt: Add USB3 HUB reset funtion to bootblock

After powering on the device, we need to pull USB3_HUB_RST_L up to
enable USB3 Hub.

TEST=boot kernel from USB ok
BUG=b:264841530

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Signed-off-by: Liju-Clr Chen <liju-clr.chen@mediatek.com>
Change-Id: I8df35efb78e90a5b3314840fe2eae81d6e501242
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72594
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/google/geralt/bootblock.c | 7 +++++++
 src/mainboard/google/geralt/gpio.h      | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/mainboard/google/geralt/bootblock.c b/src/mainboard/google/geralt/bootblock.c
index 4476aab2b8..2bd69add2c 100644
--- a/src/mainboard/google/geralt/bootblock.c
+++ b/src/mainboard/google/geralt/bootblock.c
@@ -2,12 +2,18 @@
 
 #include <bootblock_common.h>
 #include <device/mmio.h>
+#include <gpio.h>
 #include <soc/gpio.h>
 #include <soc/i2c.h>
 #include <soc/spi.h>
 
 #include "gpio.h"
 
+static void usb3_hub_reset(void)
+{
+	gpio_output(GPIO_USB3_HUB_RST_L, 1);
+}
+
 void bootblock_mainboard_init(void)
 {
 	mtk_i2c_bus_init(CONFIG_DRIVER_TPM_I2C_BUS, I2C_SPEED_FAST);
@@ -15,4 +21,5 @@ void bootblock_mainboard_init(void)
 	mtk_snfc_init();
 	setup_chromeos_gpios();
 	gpio_eint_configure(GPIO_GSC_AP_INT_ODL, IRQ_TYPE_EDGE_RISING);
+	usb3_hub_reset();
 }
diff --git a/src/mainboard/google/geralt/gpio.h b/src/mainboard/google/geralt/gpio.h
index 379377973d..7eec8f1506 100644
--- a/src/mainboard/google/geralt/gpio.h
+++ b/src/mainboard/google/geralt/gpio.h
@@ -22,6 +22,8 @@
 
 #define GPIO_SD_CD_ODL			GPIO(I2SIN_MCK)
 
+#define GPIO_USB3_HUB_RST_L		GPIO(MSDC2_DAT0)
+
 void setup_chromeos_gpios(void);
 
 #endif
-- 
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