[PATCH v3 10/10] ARM: dts: aspeed: system1: Disable gpio pull down

Ninad Palsule
2025-01-08T16:37:43Z

Disable internal pull down for the following GPIO lines.
- GPIOL4 - Reset PCH registers in the rtc.
- GPIOL5 - Reset portition of Intel ME
- GPIOL6 - FM smi active
- GPIOL7 - psu all dc power good.

Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
---
.../dts/aspeed/aspeed-bmc-ibm-system1.dts | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
index 8026c67ecaee..cf511d0a9421 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
@@ -355,7 +355,35 @@ &uhci {
status = "okay";
};

+&pinctrl {
+ pinctrl_gpiol4_unbiased: gpiol4 {
+ pins = "C15";
+ bias-disable;
+ };
+
+ pinctrl_gpiol5_unbiased: gpiol5 {
+ pins = "F15";
+ bias-disable;
+ };
+
+ pinctrl_gpiol6_unbiased: gpiol6 {
+ pins = "B14";
+ bias-disable;
+ };
+
+ pinctrl_gpiol7_unbiased: gpiol7 {
+ pins = "C14";
+ bias-disable;
+ };
+};
+
&gpio0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpiol4_unbiased
+ &pinctrl_gpiol5_unbiased
+ &pinctrl_gpiol6_unbiased
+ &pinctrl_gpiol7_unbiased>;
+
gpio-line-names =
/*A0-A7*/ "","","","","","","","",
/*B0-B7*/ "","","","","bmc-tpm-reset","","","",
--
2.43.0