ARM: dts: am3517-som: Add WL127x Wifi

Certain models of the AM3517 SOM from Logic PD come with an
integrated WL1271 WiFi.  This patch enables the WiFi.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am3517-evm.dts

@@ -220,10 +220,6 @@ &mmc1 {
 	cd-gpios = <&gpio4 31 GPIO_ACTIVE_HIGH>; /* gpio_127 */
 };
 
-&mmc2 {
-      status = "disabled";
-};
-
 &mmc3 {
       status = "disabled";
 };

arch/arm/boot/dts/am3517-som.dtsi

@@ -14,6 +14,32 @@ cpu@0 {
 			cpu0-supply = <&vdd_core_reg>;
 		};
 	};
+
+	wl12xx_buffer: wl12xx_buf {
+		compatible = "regulator-fixed";
+		regulator-name = "wl1271_buf";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&wl12xx_buffer_pins>;
+		gpio = <&gpio5 1 GPIO_ACTIVE_LOW>; /* gpio 129 */
+		regulator-always-on;
+		vin-supply = <&vdd_1v8_reg>;
+	};
+
+	wl12xx_vmmc2: wl12xx_vmmc2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vwl1271";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&wl12xx_wkup_pins>;
+		gpio = <&gpio1 3 GPIO_ACTIVE_HIGH >; /* gpio 3 */
+		startup-delay-us = <70000>;
+		enable-active-high;
+		regulator-always-on;
+		vin-supply = <&wl12xx_buffer>;
+	};
 };
 
 &gpmc {
@@ -121,8 +147,53 @@ touchscreen: tsc2004@4b {
 	};
 };
 
+&mmc2 {
+	interrupts-extended = <&intc 86 /* &omap3_pmx_core 0x12c */>;
+
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc2_pins>;
+	vmmc-supply = <&wl12xx_vmmc2>;
+	non-removable;
+	bus-width = <4>;
+	cap-power-off-card;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wlcore: wlcore@2 {
+		compatible = "ti,wl1271";
+		reg = <2>;
+		interrupt-parent = <&gpio6>;
+		interrupts = <10 IRQ_TYPE_LEVEL_HIGH>; /* gpio_170 */
+		ref-clock-frequency = <26000000>;
+		tcxo-clock-frequency = <26000000>;
+	};
+};
+
+
 &omap3_pmx_core {
 
+	wl12xx_buffer_pins: pinmux_wl12xx_buffer_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x2156, PIN_OUTPUT | MUX_MODE4)  /* mmc1_dat7.gpio_129 */
+		>;
+	};
+
+	mmc2_pins: pinmux_mmc2_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x2158, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_clk.mmc2_clk */
+			OMAP3_CORE1_IOPAD(0x215a, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_cmd.mmc2_cmd */
+			OMAP3_CORE1_IOPAD(0x215c, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_dat0.mmc2_dat0 */
+			OMAP3_CORE1_IOPAD(0x215e, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_dat1.mmc2_dat1 */
+			OMAP3_CORE1_IOPAD(0x2160, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_dat2.mmc2_dat2 */
+			OMAP3_CORE1_IOPAD(0x2162, PIN_INPUT_PULLUP | MUX_MODE0)  /* mmc2_dat3.mmc2_dat3 */
+			OMAP3_CORE1_IOPAD(0x2164, PIN_OUTPUT | MUX_MODE1) /* mmc2_dat4.mmc2_dir_dat0 */
+			OMAP3_CORE1_IOPAD(0x2166, PIN_OUTPUT | MUX_MODE1) /* mmc2_dat5.mmc2_dir_dat1 */
+			OMAP3_CORE1_IOPAD(0x2168, PIN_OUTPUT | MUX_MODE1) /* mmc2_dat6.mmc2_dir_cmd */
+			OMAP3_CORE1_IOPAD(0x216a, PIN_INPUT | MUX_MODE1) /* mmc2_dat7.mmc2_clkin */
+			OMAP3_CORE1_IOPAD(0x21c6, PIN_INPUT_PULLUP | MUX_MODE4)	/* hdq_sio.gpio_170 */
+		>;
+	};
+
 	rtc_pins: pinmux_rtc_pins {
 		pinctrl-single,pins = <
 			OMAP3_CORE1_IOPAD(0x20b6, PIN_INPUT_PULLUP | MUX_MODE4) /* gpmc_ncs4.gpio_55 */
@@ -135,3 +206,12 @@ OMAP3_CORE1_IOPAD(0x20d2, PIN_INPUT | MUX_MODE4) /* gpmc_wait3.gpio_65 */
 		>;
 	};
 };
+
+&omap3_pmx_wkup {
+
+	wl12xx_wkup_pins: pinmux_wl12xx_wkup_pins {
+		pinctrl-single,pins = <
+			OMAP3_WKUP_IOPAD(0x2a0c, PIN_OUTPUT | MUX_MODE4)	/* sys_boot1.gpio_3 */
+		>;
+	};
+};