[RFC PATCH] ARM: dts: rockchip: Add wifi support for firefly

[Michael Trimarchi <michael@amarulasolutions.com>]

This patch enable wifi support for the firefly board.
Card answer to me that support from 2.0V but regulator is connected
to 1.8V, so voltage capability is wrong. In order to avoid this
we just defined a fixed regulator trigger by the wifi enable gpio
that report 2.0V.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
---
 arch/arm/boot/dts/rk3288-firefly.dtsi | 43 +++++++++++++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/rk3288-firefly.dtsi b/arch/arm/boot/dts/rk3288-firefly.dtsi
index 0b42372..fcf234e 100644
--- a/arch/arm/boot/dts/rk3288-firefly.dtsi
+++ b/arch/arm/boot/dts/rk3288-firefly.dtsi
@@ -116,6 +116,28 @@
 		vin-supply = <&vcc_io>;
 	};
 
+	io_domains: io-domains {
+		compatible = "rockchip,rk3288-io-voltage-domain";
+		rockchip,grf = <&grf>;
+
+		wifi-supply = <&vcc_18>;
+		audio-supply = <&vcca_33>;
+	};
+
+	vcc_wifi: wifi-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio4 28 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdio0_pwr>;
+		regulator-name = "vcc_wifi";
+		regulator-min-microvolt = <2000000>;
+		regulator-max-microvolt = <2000000>;
+		startup-delay-us = <100000>;
+		regulator-always-on;
+		vin-supply = <&vcc_io>;
+	};
+
 	vcc_flash: flash-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc_flash";
@@ -437,13 +459,30 @@
 &sdio0 {
 	broken-cd;
 	bus-width = <4>;
+	clock-freq-min-max = <400000 50000000>;
 	disable-wp;
 	non-removable;
+	cap-sd-highspeed;
 	num-slots = <1>;
 	pinctrl-names = "default";
-	pinctrl-0 = <&sdio0_bus4>, <&sdio0_cmd>, <&sdio0_clk>;
-	vmmc-supply = <&vcc_18>;
+	pinctrl-0 = <&sdio0_bus4>, <&sdio0_cmd>, <&sdio0_clk>, <&sdio0_int>;
+
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	sd-uhs-ddr50;
+	cap-sdio-irq;
+
+	vmmc-supply = <&vcc_wifi>;
 	status = "okay";
+
+	brcmf: bcrmf@0 {
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&gpio4>;
+		reg = <0>;
+		interrupts = <30 IRQ_TYPE_EDGE_FALLING>;
+		interrupt-names = "host-wake";
+		status = "okay";
+	};
 };
 
 &sdmmc {
-- 
1.9.1