[PATCH v3 2/2] arm64: dts: rockchip: Add Bluetooth support for Khadas Edge 2L

[Gray Huang]

Enable Bluetooth support for the Ampak AP6275P module on the
Khadas Edge 2L. This involves enabling the UART5 interface for
HCI communication and defining the required regulators and
power-sequence pins.

Signed-off-by: Gray Huang <gray.huang at wesion.com>
---
 .../dts/rockchip/rk3576-khadas-edge-2l.dts    | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3576-khadas-edge-2l.dts b/arch/arm64/boot/dts/rockchip/rk3576-khadas-edge-2l.dts
index 0c55ff5331ce..8d65e1fe9ca0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-khadas-edge-2l.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-khadas-edge-2l.dts
@@ -552,6 +552,20 @@ wifi: wifi at 0,0 {
 };
 
 &pinctrl {
+	bluetooth {
+		bt_reg_on: bt-reg-on {
+			rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		bt_wake_host: bt-wake-host {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		host_wake_bt: host-wake-bt {
+			rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	pcie0 {
 		pcie0_rst: pcie0-rst {
 			rockchip,pins = <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
@@ -598,6 +612,27 @@ &uart0 {
 	status = "okay";
 };
 
+&uart5 {
+	pinctrl-0 = <&uart5m1_xfer &uart5m1_ctsn &uart5m1_rtsn>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&hym8563>;
+		clock-names = "lpo";
+		device-wakeup-gpios = <&gpio0 RK_PA5 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PB1 IRQ_TYPE_LEVEL_HIGH>;
+		pinctrl-0 = <&bt_reg_on &bt_wake_host &host_wake_bt>;
+		pinctrl-names = "default";
+		shutdown-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&vcc_3v3_s3>;
+		vddio-supply = <&vcc_1v8_s3>;
+	};
+};
+
 &usb_drd1_dwc3 {
 	dr_mode = "host";
 	status = "okay";
-- 
2.34.1