[PATCH v2 2/4] riscv: dts: spacemit: k3: add rfkill node for Bluetooth on Pico-ITX board

On the K3 PICO-ITX board, by default the GPIO pin that connects to the
RTL8852BE Bluetooth enable signal is driven low, resulting in
impossibility to use Bluetooth. Add a DT node to expose it as an RFKILL
device, which lets the Bluetooth driver or userspace toggle it as
required.

Tested-by: Anirudh Srinivasan <[email protected]>
Signed-off-by: Aurelien Jarno <[email protected]>
---
 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index b084a35aa00e3..6a60fae1f8b50 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -43,6 +43,13 @@ reg_aux_vcc5v: regulator-aux-vcc5v {
 		regulator-max-microvolt = <5000000>;
 		regulator-always-on;
 	};
+
+	rfkill-usb-bt {
+		compatible = "rfkill-gpio";
+		label = "rfkill-usb-bt";
+		radio-type = "bluetooth";
+		shutdown-gpios = <&gpio 0 30 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &i2c2 {
-- 
2.53.0