[PATCH v3] arm64: dts: rockchip: add rfkill node for M.2 E wifi on orangepi-5-plus

[Florian Klink]

This follows the same logic as 82d40b141a4c ("arm64: dts: rockchip: add
rfkill node for M.2 Key E WiFi on rock-5b").

On the orangepi-5-plus, there's also a GPIO pin connecting the WiFi
enable signal inside the M.2 Key E slot.

The exact GPIO PIN can be validated in the Armbian rk-5.10-rkr4 kernel
rk3588-orangepi-5-plus.dtsi file [1], which contains a `wifi_disable`
node referencing RK_PC4 on &gpio0.

[1] https://github.com/armbian/linux-rockchip/blob/9fbe23c9da24f236c6009f42d3f02c1ffb84c169/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts

Signed-off-by: Florian Klink <flokli at flokli.de>
Tested-by: Florian Klink <flokli at flokli.de>
---
 arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts b/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts
index e74871491ef5..c3a6812cc93a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-orangepi-5-plus.dts
@@ -105,6 +105,13 @@ led {
 		};
 	};
 
+	rfkill {
+		compatible = "rfkill-gpio";
+		label = "rfkill-pcie-wlan";
+		radio-type = "wlan";
+		shutdown-gpios = <&gpio0 RK_PC4 GPIO_ACTIVE_HIGH>;
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		pinctrl-names = "default";
-- 
2.45.2