arm64: dts: rockchip: Add nodes for SDIO/UART Wi-Fi/Bluetooth modules to Radxa Rock 3A

This patch adds related bus/pinctrl/power nodes to enable support for
Radxa's Wi-Fi Bluetooth combo module.
Tested with RADXA A6 module, which uses AP6275S (BCM43752A2)
Signed-off-by: Shengyu Qu <wiagn233@outlook.com>
Link: https://lore.kernel.org/r/OS3P286MB25972313C916A68698B1CD8698359@OS3P286MB2597.JPNP286.PROD.OUTLOOK.COMSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts

@@ -60,6 +60,17 @@ simple-audio-card,codec {
 		};
 	};
 
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&rk809 1>;
+		clock-names = "ext_clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable>;
+		post-power-on-delay-ms = <100>;
+		power-off-delay-us = <5000000>;
+		reset-gpios = <&gpio3 RK_PD4 GPIO_ACTIVE_LOW>;
+	};
+
 	vcc12v_dcin: vcc12v-dcin-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -654,6 +665,26 @@ vcc5v0_usb_otg_en: vcc5v0_usb_otg_en {
 			rockchip,pins = <0 RK_PA5 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	bt {
+		bt_enable: bt-enable {
+			rockchip,pins = <4 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_host_wake: bt-host-wake {
+			rockchip,pins = <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+
+		bt_wake: bt-wake {
+			rockchip,pins = <4 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	sdio-pwrseq {
+		wifi_enable: wifi-enable {
+			rockchip,pins = <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &pmu_io_domains {
@@ -698,12 +729,50 @@ &sdmmc0 {
 	status = "okay";
 };
 
+&sdmmc2 {
+	supports-sdio;
+	bus-width = <4>;
+	disable-wp;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdmmc2m0_bus4 &sdmmc2m0_cmd &sdmmc2m0_clk>;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc3v3_sys>;
+	vqmmc-supply = <&vcc_1v8>;
+	status = "okay";
+};
+
 &tsadc {
 	rockchip,hw-tshut-mode = <1>;
 	rockchip,hw-tshut-polarity = <0>;
 	status = "okay";
 };
 
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1m0_xfer &uart1m0_ctsn &uart1m0_rtsn>;
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&rk809 1>;
+		clock-names = "lpo";
+		device-wakeup-gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>;
+		shutdown-gpios = <&gpio4 RK_PB2 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_host_wake &bt_wake &bt_enable>;
+		vbat-supply = <&vcc3v3_sys>;
+		vddio-supply = <&vcc_1v8>;
+		/* vddio comes from regulator on module, use IO bank voltage instead */
+	};
+};
+
 &uart2 {
 	status = "okay";
 };