[PATCH 5/9] arm64: dts: rockchip: px30-engicam: Add WiFi support

[Jagan Teki]

From: Suniel Mahesh <sunil at amarulasolutions.com>

Engicam PX30 carrier boards like EDIMM2.2 and C.TOUCH2.0 have
an onboard Sterling-LWD Wifi/BT chip based on BCM43430 connected
on the SDIO bus.

The SDIO power sequnce is connacted with exteernal 32KHz oscillator
and it require 3V3 regulator input.

This patch adds WiFi enablement nodes for these respective boards.

Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
Signed-off-by: Suniel Mahesh <sunil at amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
 .../dts/rockchip/px30-engicam-common.dtsi     | 45 +++++++++++++++++++
 .../dts/rockchip/px30-engicam-ctouch2.dtsi    | 12 +++++
 .../px30-engicam-px30-core-edimm2.2.dts       | 12 +++++
 3 files changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/px30-engicam-common.dtsi b/arch/arm64/boot/dts/rockchip/px30-engicam-common.dtsi
index 8fdd7ff2fdf9..92681ccf50f1 100644
--- a/arch/arm64/boot/dts/rockchip/px30-engicam-common.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30-engicam-common.dtsi
@@ -14,6 +14,51 @@ vcc5v0_sys: vcc5v0-sys {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 	};
+
+	xin32k: xin32k {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		clock-output-names = "xin32k";
+	};
+
+	vcc3v3_rf_aux_mod: vcc3v3-rf-aux-mod {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_rf_aux_mod";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		clocks = <&xin32k>;
+		clock-names = "ext_clock";
+		post-power-on-delay-ms = <80>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable_h>;
+	};
+};
+
+&sdio {
+	#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;
+	sd-uhs-sdr104;
+	status = "okay";
+
+	brcmf: wifi at 1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+	};
 };
 
 &gmac {
diff --git a/arch/arm64/boot/dts/rockchip/px30-engicam-ctouch2.dtsi b/arch/arm64/boot/dts/rockchip/px30-engicam-ctouch2.dtsi
index 58425b1e559f..d5708779c285 100644
--- a/arch/arm64/boot/dts/rockchip/px30-engicam-ctouch2.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30-engicam-ctouch2.dtsi
@@ -6,3 +6,15 @@
  */
 
 #include "px30-engicam-common.dtsi"
+
+&pinctrl {
+	sdio-pwrseq {
+		wifi_enable_h: wifi-enable-h {
+			rockchip,pins = <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&sdio_pwrseq {
+	reset-gpios = <&gpio1 RK_PC2 GPIO_ACTIVE_LOW>;
+};
diff --git a/arch/arm64/boot/dts/rockchip/px30-engicam-px30-core-edimm2.2.dts b/arch/arm64/boot/dts/rockchip/px30-engicam-px30-core-edimm2.2.dts
index e54d1e480daa..913444548b59 100644
--- a/arch/arm64/boot/dts/rockchip/px30-engicam-px30-core-edimm2.2.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-engicam-px30-core-edimm2.2.dts
@@ -19,3 +19,15 @@ chosen {
 		stdout-path = "serial2:115200n8";
 	};
 };
+
+&pinctrl {
+	sdio-pwrseq {
+		wifi_enable_h: wifi-enable-h {
+			rockchip,pins = <1 RK_PC3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&sdio_pwrseq {
+	reset-gpios = <&gpio1 RK_PC3 GPIO_ACTIVE_LOW>;
+};
-- 
2.25.1