linux-kernel - [PATCH v3 1/2] arm64: dts: rockchip: fix pinmux of UART0 for PX30 Ringneck on Haikou

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Message-Id: <20250225-ringneck-dtbos-v3-1-853a9a6dd597@cherry.de>
Date: Tue, 25 Feb 2025 12:53:29 +0100
From: Quentin Schulz <foss+kernel@...il.net>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>, 
 Quentin Schulz <quentin.schulz@...obroma-systems.com>, 
 Farouk Bouabid <farouk.bouabid@...obroma-systems.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Quentin Schulz <quentin.schulz@...rry.de>, stable@...r.kernel.org
Subject: [PATCH v3 1/2] arm64: dts: rockchip: fix pinmux of UART0 for PX30
 Ringneck on Haikou

From: Quentin Schulz <quentin.schulz@...rry.de>

UART0 pinmux by default configures GPIO0_B5 in its UART RTS function for
UART0. However, by default on Haikou, it is used as GPIO as UART RTS for
UART5.

Therefore, let's update UART0 pinmux to not configure the pin in that
mode, a later commit will make UART5 request the GPIO pinmux.

Fixes: c484cf93f61b ("arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard")
Cc: stable@...r.kernel.org
Signed-off-by: Quentin Schulz <quentin.schulz@...rry.de>
---
 arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
index eb9470a00e549fc107603be216a5f714914e7a2c..9a568f3d0a9916dff22222c59e5e0c94ce226858 100644
--- a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
@@ -222,6 +222,7 @@ &u2phy_otg {
 };
 
 &uart0 {
+	pinctrl-0 = <&uart0_xfer>;
 	status = "okay";
 };
 

-- 
2.48.1