[PATCH v3 4/5] arm64: dts: allwinner: a523: Add UART1 pins

From: Chen-Yu Tsai
Date: Sat Jun 28 2025 - 12:16:34 EST


From: Chen-Yu Tsai <wens@xxxxxxxx>

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.

Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
---
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 4839411e51cf..cf0bc39aab04 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@2001000 {
--
2.39.5