mb/google/rex: Configure ISH UART TX/RX as NC
This patch reverses ISH UART pin configuration to allow ISH to enter
into suspend mode. This UART port is for debugging purposes.
BUG=b:302612549
TEST=On Google/rex platform with ISH enabled, do suspend_stress_test
This test must pass
Signed-off-by: Bernardo Perez Priego <bernardo.perez.priego@intel.com>
Change-Id: I8aba45420744a3990e1f9637c3b31ea2e0f78f87
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78049
Reviewed-by: Tanu Malhotra <tanu.malhotra@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
diff --git a/src/mainboard/google/rex/variants/rex0/fw_config.c b/src/mainboard/google/rex/variants/rex0/fw_config.c
index cea55ec..35a4fd9 100644
--- a/src/mainboard/google/rex/variants/rex0/fw_config.c
+++ b/src/mainboard/google/rex/variants/rex0/fw_config.c
@@ -88,10 +88,6 @@
PAD_CFG_NF_IOSTANDBY_IGNORE(GPP_B02, NONE, DEEP, NF3),
/* GPP_B03 : ISH_I2C0_SCL */
PAD_CFG_NF_IOSTANDBY_IGNORE(GPP_B03, NONE, DEEP, NF3),
- /* GPP_D05 : ISH_UART_TX */
- PAD_CFG_NF(GPP_D05, NONE, DEEP, NF2),
- /* GPP_D06 : ISH_UART_RX */
- PAD_CFG_NF(GPP_D06, NONE, DEEP, NF2),
/* GPP_B08 : ISH_GP3, SOC_ISH_ACCEL_INT_L */
PAD_CFG_NF(GPP_B08, NONE, DEEP, NF4),
/* GPP_E15 : ISH_GP5A, SOC_ISH_IMU_INT_L */