Re: [PATCH v2] arm64: dts: ipq5018: Correct uart1_pins pinconf

From: Sricharan Ramabadhran
Date: Fri Sep 01 2023 - 08:39:48 EST


Hi Ziyang,

<...>

diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
index 9f13d2dcdfd5..91b98020e1c6 100644
--- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
@@ -104,10 +104,10 @@ tlmm: pinctrl@1000000 {
              #interrupt-cells = <2>;
              uart1_pins: uart1-state {
-                pins = "gpio31", "gpio32", "gpio33", "gpio34";
-                function = "blsp1_uart1";
+                pins = "gpio28", "gpio29";
+                function = "blsp0_uart1";
                  drive-strength = <8>;
-                bias-pull-down;
+                bias-disabled;
              };
          };

So this change will have the effect of changing the console on ipq5018-rdp432 from gpio31-gpio34 to gpio28, gpio29.

Have you verified that change on hardware or the schematic ?

https://forum.openwrt.org/t/add-support-for-xiaomi-redmi-ax5400-white-version/140879/22?page=2

This has the wrong UART pinout ?

Is this change something that should be expressed for a particular board ?

Infact again checked it, the correct pins are "gpio20", "gpio21".
It works so far because u-boot has configured it.

Regards,
Sricharan