ARM: dts: sun7i: Add basic support for the Cubietruck WiFi module

The CubieTruck has an AMPAK AP6210 WiFi+Bluetooth module. The WiFi
part is a BCM43362 IC connected to MMC3 in the A20 SoC via SDIO.
The IC also takes a power enable signal via GPIO.

The WiFi module supports out-of-band interrupt signaling via GPIO,
but this is not supported in this patch.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
index a39f089..9dbb763 100644 (file)
--- a/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
+++ b/arch/arm/boot/dts/sun7i-a20-cubietruck.dts
@@ -29,6 +29,14 @@
                        status = "okay";
                };
 
+               mmc3: mmc@01c12000 {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&mmc3_pins_a>;
+                       vmmc-supply = <&reg_vmmc3>;
+                       non-removable;
+                       status = "okay";
+               };
+
                usbphy: phy@01c13400 {
                        usb1_vbus-supply = <&reg_usb1_vbus>;
                        usb2_vbus-supply = <&reg_usb2_vbus>;
@@ -57,6 +65,18 @@
                };
 
                pinctrl@01c20800 {
+                       mmc3_pins_a: mmc3@0 {
+                               /* AP6210 requires pull-up */
+                               allwinner,pull = <1>;
+                       };
+
+                       vmmc3_pin_cubietruck: vmmc3_pin@0 {
+                               allwinner,pins = "PH9";
+                               allwinner,function = "gpio_out";
+                               allwinner,drive = <0>;
+                               allwinner,pull = <0>;
+                       };
+
                        ahci_pwr_pin_cubietruck: ahci_pwr_pin@1 {
                                allwinner,pins = "PH12";
                                allwinner,function = "gpio_out";
@@ -154,4 +174,15 @@
        reg_usb2_vbus: usb2-vbus {
                status = "okay";
        };
+
+       reg_vmmc3: vmmc3 {
+               compatible = "regulator-fixed";
+               pinctrl-names = "default";
+               pinctrl-0 = <&vmmc3_pin_cubietruck>;
+               regulator-name = "vmmc3";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               enable-active-high;
+               gpio = <&pio 7 9 0>;
+       };
 };