commit b5994be2e8d25be6c2724146404936c1c9fd8620
author Reka Norman <rekanorman@google.com> Thu Apr 07 15:43:30 2022 +1000
committer Felix Held <felix-coreboot@felixheld.de> Wed Apr 13 15:09:17 2022 +0000
tree 6cfd8311a9b42250db3bd4e1c1951929d08c9979
parent e7a14cf9af464337c36a0cb72da970d483f38fcc

mb/google/brya/var/nereid: Enable OZ711LV2LN SD card controller

Select the Bayhub LV2 driver, and implement power sequencing as per the
datasheet.

BUG=b:223304542
TEST=Check that connecting an SD card works as expected in the OS. Probe
the EN and RST signals and check the timing requirements are met.

Change-Id: Id1cca2024e06e5b2c7cefd22aa0b735bc542dc3b
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63434
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>

src/mainboard/google/brya/Kconfig.name

diff --git a/src/mainboard/google/brya/Kconfig.name b/src/mainboard/google/brya/Kconfig.name
index 614fdc3..e936ca2 100644
--- a/src/mainboard/google/brya/Kconfig.name
+++ b/src/mainboard/google/brya/Kconfig.name
@@ -92,6 +92,7 @@
 	bool "->  Nereid"
 	select ALDERLAKE_CONFIGURE_DESCRIPTOR
 	select BOARD_GOOGLE_BASEBOARD_NISSA
+	select DRIVERS_GENERIC_BAYHUB_LV2
 	select DRIVERS_GENERIC_GPIO_KEYS
 
 config BOARD_GOOGLE_PRIMUS

src/mainboard/google/brya/variants/nereid/gpio.c

diff --git a/src/mainboard/google/brya/variants/nereid/gpio.c b/src/mainboard/google/brya/variants/nereid/gpio.c
index f011e2f..7e70ac4 100644
--- a/src/mainboard/google/brya/variants/nereid/gpio.c
+++ b/src/mainboard/google/brya/variants/nereid/gpio.c
@@ -43,6 +43,8 @@
 static const struct pad_config early_gpio_table[] = {
 	/* B11 : PMCALERT# ==> EN_PP3300_WLAN_X */
 	PAD_CFG_GPO(GPP_B11, 0, DEEP),
+	/* H12 : UART0_RTS# ==> SD_PERST_L */
+	PAD_CFG_GPO(GPP_H12, 0, DEEP),
 	/* H20 : IMGCLKOUT1 ==> WLAN_PERST_L */
 	PAD_CFG_GPO(GPP_H20, 0, DEEP),
 	/* A13 : GPP_A13 ==> GSC_SOC_INT_ODL */
@@ -59,11 +61,15 @@
 	PAD_CFG_NF(GPP_H10, NONE, DEEP, NF2),
 	/* H11 : UART0_TXD ==> UART_SOC_TX_DBG_RX */
 	PAD_CFG_NF(GPP_H11, NONE, DEEP, NF2),
+	/* H13 : UART0_CTS# ==> EN_PP3300_SD_X */
+	PAD_CFG_GPO(GPP_H13, 1, DEEP),
 };
 
 static const struct pad_config romstage_gpio_table[] = {
 	/* B11 : PMCALERT# ==> EN_PP3300_WLAN_X */
 	PAD_CFG_GPO(GPP_B11, 1, DEEP),
+	/* H12 : UART0_RTS# ==> SD_PERST_L */
+	PAD_CFG_GPO(GPP_H12, 1, DEEP),
 };
 
 const struct pad_config *variant_gpio_override_table(size_t *num)