Subject: [PATCH] arm64: dts: rockchip: add WiFi+BT support on ROCK Pi4 board

From: Akash Gajjar <[email-masked]>
Date: Wed, 29 May 2019 00:16:58 +0530

Rock Pi 4 has a on board AP6256 WiFi/BT Module. enable wifi and bluetooth
support on Rock Pi 4 board.

Signed-off-by: Akash Gajjar <[email-masked]>
---
 .../boot/dts/rockchip/rk3399-rock-pi-4.dts    | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
index e030627159c6..55e74f4d5cd0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dts
@@ -25,6 +25,15 @@
 		#clock-cells = <0>;
 	};
 
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&rk808 1>;
+		clock-names = "ext_clock";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable_h>;
+		reset-gpios = <&gpio0 RK_PB2 GPIO_ACTIVE_LOW>;
+	};
+
 	vcc12v_dcin: dc-12v {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -451,12 +460,46 @@
 };
 
 &pinctrl {
+	bt {
+		bt_enable_h: bt-enable-h {
+			rockchip,pins = <0 RK_PB1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_host_wake_l: bt-host-wake-l {
+			rockchip,pins = <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		bt_wake_l: bt-wake-l {
+			rockchip,pins = <2 RK_PD3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	pcie {
 		pcie_pwr_en: pcie-pwr-en {
 			rockchip,pins = <2 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
 
+	sdio0 {
+		sdio0_bus4: sdio0-bus4 {
+			rockchip,pins =
+				<2 20 RK_FUNC_1 &pcfg_pull_up_20ma>,
+				<2 21 RK_FUNC_1 &pcfg_pull_up_20ma>,
+				<2 22 RK_FUNC_1 &pcfg_pull_up_20ma>,
+				<2 23 RK_FUNC_1 &pcfg_pull_up_20ma>;
+		};
+
+		sdio0_cmd: sdio0-cmd {
+			rockchip,pins =
+				<2 24 RK_FUNC_1 &pcfg_pull_up_20ma>;
+		};
+
+		sdio0_clk: sdio0-clk {
+			rockchip,pins =
+				<2 25 RK_FUNC_1 &pcfg_pull_none_20ma>;
+		};
+	};
+
 	pmic {
 		pmic_int_l: pmic-int-l {
 			rockchip,pins = <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_up>;
@@ -482,6 +525,17 @@
 			rockchip,pins = <4 RK_PD1 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	wifi {
+		wifi_enable_h: wifi-enable-h {
+			rockchip,pins =
+				<0 RK_PB2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		wifi_host_wake_l: wifi-host-wake-l {
+			rockchip,pins = <0 RK_PA3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &pwm2 {
@@ -494,6 +548,32 @@
 	vref-supply = <&vcc_1v8>;
 };
 
+&sdio0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	bus-width = <4>;
+	clock-frequency = <50000000>;
+	cap-sdio-irq;
+	cap-sd-highspeed;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>;
+	sd-uhs-sdr104;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA3 GPIO_ACTIVE_HIGH>;
+		interrupt-names = "host-wake";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_host_wake_l>;
+	};
+};
+
 &sdmmc {
 	bus-width = <4>;
 	cap-mmc-highspeed;
@@ -557,6 +637,23 @@
 	};
 };
 
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer &uart0_cts &uart0_rts>;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		clocks = <&rk808 1>;
+		clock-names = "ext_clock";
+		device-wakeup-gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
+		shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&bt_host_wake_l &bt_wake_l &bt_enable_h>;
+	};
+};
+
 &uart2 {
 	status = "okay";
 };
-- 
2.17.1

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