linux-kernel - [PATCH 4/5] arm64: dts: allwinner: a523: Add UART1 pins

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Message-Id: <20250619173007.3367034-5-wens@kernel.org>
Date: Fri, 20 Jun 2025 01:30:06 +0800
From: Chen-Yu Tsai <wens@...nel.org>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej@...nel.org>,
	Samuel Holland <samuel@...lland.org>
Cc: devicetree@...r.kernel.org,
	linux-sunxi@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Andre Przywara <andre.przywara@....com>
Subject: [PATCH 4/5] arm64: dts: allwinner: a523: Add UART1 pins

From: Chen-Yu Tsai <wens@...e.org>

UART1 is normally used to connect to the Bluetooth side of a Broadcom
WiFi+BT combo chip. The connection uses 4 pins.

Add pinmux nodes for UART1, one for the RX/TX pins, and one for the
RTS/CTS pins.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index 30613a0b1124..6f62201fd739 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -168,6 +168,20 @@ uart0_pb_pins: uart0-pb-pins {
 				allwinner,pinmux = <2>;
 				function = "uart0";
 			};
+
+			/omit-if-no-ref/
+			uart1_pins: uart1-pins {
+				pins = "PG6", "PG7";
+				function = "uart1";
+				allwinner,pinmux = <2>;
+			};
+
+			/omit-if-no-ref/
+			uart1_rts_cts_pins: uart1-rts-cts-pins {
+				pins = "PG8", "PG9";
+				function = "uart1";
+				allwinner,pinmux = <2>;
+			};
 		};
 
 		ccu: clock-controller@...1000 {
-- 
2.39.5