ARM: dts: add spi wifi support to cm-t335

Device tree modifications:
- Pinmux for SPI0 and WiFi GPIOs.
- SPI0 node with wlcore as a child node.

Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am335x-cm-t335.dts b/arch/arm/boot/dts/am335x-cm-t335.dts
index af6dbba093f3ee02921de669bacd95fea400df49..5d5fb62d8fbe783c4ccd54fae36f1c0fc9f8ba2f 100644 (file)
--- a/arch/arm/boot/dts/am335x-cm-t335.dts
+++ b/arch/arm/boot/dts/am335x-cm-t335.dts
@@ -11,6 +11,7 @@
 /dts-v1/;
 
 #include "am33xx.dtsi"
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
        model = "CompuLab CM-T335";
@@ -40,6 +41,15 @@
                regulator-max-microvolt = <3300000>;
        };
 
+       /* Regulator for WiFi */
+       vwlan_fixed: fixedregulator@2 {
+               compatible = "regulator-fixed";
+               regulator-name = "vwlan_fixed";
+               gpio = <&gpio0 20 GPIO_ACTIVE_HIGH>; /* gpio0_20 */
+               enable-active-high;
+               regulator-boot-off;
+       };
+
        backlight {
                compatible = "pwm-backlight";
                pwms = <&ecap0 0 50000 0>;
@@ -271,6 +281,21 @@
                >;
        };
 
+       spi0_pins: pinmux_spi0_pins {
+               pinctrl-single,pins = <
+                       /* spi0_sclk.spi0_sclk */
+                       AM33XX_IOPAD(0x950, PIN_INPUT | MUX_MODE0)
+                       /* spi0_d0.spi0_d0 */
+                       AM33XX_IOPAD(0x954, PIN_OUTPUT_PULLUP | MUX_MODE0)
+                       /* spi0_d1.spi0_d1 */
+                       AM33XX_IOPAD(0x958, PIN_INPUT | MUX_MODE0)
+                       /* spi0_cs0.spi0_cs0 */
+                       AM33XX_IOPAD(0x95C, PIN_OUTPUT | MUX_MODE0)
+                       /* spi0_cs1.spi0_cs1 */
+                       AM33XX_IOPAD(0x960, PIN_OUTPUT | MUX_MODE0)
+               >;
+       };
+
        /* wl1271 bluetooth */
        bluetooth_pins: pinmux_bluetooth_pins {
                pinctrl-single,pins = <
@@ -292,6 +317,16 @@
                        AM33XX_IOPAD(0x944, PIN_INPUT_PULLDOWN | MUX_MODE4)
                >;
        };
+
+       /* wl1271 WiFi */
+       wifi_pins: pinmux_wifi_pins {
+               pinctrl-single,pins = <
+                       /* EMU1.gpio3_8 - WiFi IRQ */
+                       AM33XX_IOPAD(0x9e8, PIN_INPUT_PULLUP | MUX_MODE7)
+                       /* XDMA_EVENT_INTR1.gpio0_20 - WiFi enable */
+                       AM33XX_IOPAD(0x9b4, PIN_OUTPUT | MUX_MODE7)
+               >;
+       };
 };
 
 &uart0 {
@@ -510,3 +545,23 @@ status = "okay";
                #sound-dai-cells= <0>;
                status = "okay";
 };
+
+&spi0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&spi0_pins>;
+       ti,pindir-d0-out-d1-in = <1>;
+       /* WLS1271 WiFi */
+       wlcore: wlcore@1 {
+               compatible = "ti,wl1271";
+               pinctrl-names = "default";
+               pinctrl-0 = <&wifi_pins>;
+               reg = <1>;
+               spi-max-frequency = <48000000>;
+               clock-xtal;
+               ref-clock-frequency = <38400000>;
+               interrupt-parent = <&gpio3>;
+               interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+               vwlan-supply = <&vwlan_fixed>;
+       };
+};