linux-kernel - [PATCH v2 1/5] arm64: dts: rockchip: fix pinmux of UART0 for PX30 Ringneck on Haikou

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Message-Id: <20250221-ringneck-dtbos-v2-1-310c0b9a3909@cherry.de>
Date: Fri, 21 Feb 2025 15:04:33 +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 v2 1/5] 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 to 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 e4517f47d519cc08ec9ee705a6f51a740687f6df..2321536c553fed20bc02d91f40a5d5a6dc20892c 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