[coreboot-gerrit] Change in coreboot[master]: mb/google/volteer: Configure GPIO GPP_H10 for retimer force power

[John Zhao (Code Review)]

John Zhao has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/44346 )

Change subject: mb/google/volteer: Configure GPIO GPP_H10 for retimer force power
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mb/google/volteer: Configure GPIO GPP_H10 for retimer force power

Retimer needs to be powered on during its firmware upgrade. This change
configures the retimer force power GPIO to be output and 0 initially.
This retimer force power GPIO will be set high during firmware upgrade
and back to low once finished.

BUG=b:162528868
TEST=Built and booted to kernel successfully on Volteer.

Signed-off-by: John Zhao 
Change-Id: I2938882aa84a78b30da3b32cee7157bee389d37c
---
M src/mainboard/google/volteer/variants/baseboard/gpio.c
M src/mainboard/google/volteer/variants/baseboard/include/baseboard/gpio.h
2 files changed, 4 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/44346/1

diff --git a/src/mainboard/google/volteer/variants/baseboard/gpio.c b/src/mainboard/google/volteer/variants/baseboard/gpio.c
index ad17a94..430203f 100644
--- a/src/mainboard/google/volteer/variants/baseboard/gpio.c
+++ b/src/mainboard/google/volteer/variants/baseboard/gpio.c
@@ -306,7 +306,7 @@
    /* H9  : I2C4_SCL ==> NC */
    PAD_NC(GPP_H9, NONE),
    /* H10 : SRCCLKREQ4# ==> USB_C1_RT_FORCE_PWR */
-	PAD_CFG_GPO(GPP_H10, 1, DEEP),
+	PAD_CFG_GPO(GPP_H10, 0, DEEP),
    /* H11 : SRCCLKREQ5# ==> NC */
    PAD_NC(GPP_H11, NONE),
    /* H12 : M2_SKT2_CFG0 ==> NONE */
diff --git a/src/mainboard/google/volteer/variants/baseboard/include/baseboard/gpio.h b/src/mainboard/google/volteer/variants/baseboard/include/baseboard/gpio.h
index 4e2733e..7a34acd 100644
--- a/src/mainboard/google/volteer/variants/baseboard/include/baseboard/gpio.h
+++ b/src/mainboard/google/volteer/variants/baseboard/include/baseboard/gpio.h
@@ -30,4 +30,7 @@
 /* DRAM population strap (value 0=fully-populated, 1=half-populated) */
 #define GPIO_MEM_CH_SEL		GPP_A17

+/* Retimer force power */
+#define RT_FORCE_PWR		GPP_H10
+
 #endif /* BASEBOARD_GPIO_H */