[PATCH v4 7/7] ARM: dts: aspeed: yosemite5: Add debug card bypass GPIO

[Kevin Tung]

On Yv5, the SCM CPLD bypass OCP debug card commands to the BMC.
These commands share the same I2C bus used by the BMC to access the
SCM CPLD for firmware updates, which can cause bus conflicts.

To avoid this, the SCM CPLD provides a bypass control GPIO connected
to GPIOO7. When asserted by the BMC, this GPIO isolates debug card
commands and prevents conflicts during SCM CPLD access.

Add the DEBUG_CARD_BYPASS GPIO to support this behavior.

Signed-off-by: Kevin Tung <kevin.tung.openbmc at gmail.com>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite5.dts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite5.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite5.dts
index 48f864b52d1a22b12f8a39ba9703a90349ed930d..61e78d5e712ff45e1a0691979b9b36408404cd2d 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite5.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite5.dts
@@ -166,7 +166,8 @@ &gpio0 {
 			"led-postcode-3","led-postcode-4","led-postcode-5",
 			"led-postcode-6","led-postcode-7",
 	/*O0-O7*/	"RUN_POWER_PG","PWR_BRAKE","CHASSIS_AC_LOSS","BSM_PRSNT_N",
-			"PSU_SMB_ALERT","FM_TPM_PRSNT_0_N","PSU_FW_UPDATING_N","",
+			"PSU_SMB_ALERT","FM_TPM_PRSNT_0_N",
+			"PSU_FW_UPDATING_N","DEBUG_CARD_BYPASS",
 	/*P0-P7*/	"PWR_BTN_BMC_N","IPEX_CABLE_PRSNT","ID_RST_BTN_BMC_N",
 			"RST_BMC_RSTBTN_OUT_N","BMC_PWR_LED","RUN_POWER_EN","SHDN_FORCE","",
 	/*Q0-Q7*/	"IRQ_PCH_TPM_SPI_LV3_N","USB_OC0_REAR_N","UART_MUX_SEL",

-- 
2.52.0