mb/google/volteer/variant/lindar: Correct SD card reader power sequence
According to the spec provided by Bayhub, the 3.3V power rail must be enabled at least 100ms before reset is released.
To ensure this, set the power enable signal in the bootblock GPIO table.
BUG=b:173676531
BRANCH=firmware-volteer-13521.B
TEST=Built and booted into OS, test USB function normally.
Change-Id: I0c536f36c138ace93766f3024f6ec5d47b38269f
Signed-off-by: Kevin Chang <kevin.chang@lcfc.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47799
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/volteer/variants/lindar/gpio.c b/src/mainboard/google/volteer/variants/lindar/gpio.c
index 4f3d5f7..08f1401 100644
--- a/src/mainboard/google/volteer/variants/lindar/gpio.c
+++ b/src/mainboard/google/volteer/variants/lindar/gpio.c
@@ -134,6 +134,9 @@
/* C21 : UART2_TXD ==> H1_PCH_INT_ODL */
PAD_CFG_GPI_APIC(GPP_C21, NONE, PLTRST, LEVEL, INVERT),
+ /* D16 : ISH_UART0_CTS# ==> EN_PP3300_SD */
+ PAD_CFG_GPO(GPP_D16, 1, DEEP),
+
/* H11 : SRCCLKREQ5# ==> WLAN_PERST_L */
PAD_CFG_GPO(GPP_H11, 1, DEEP),
};