ARM: dts: sun6i: hummingbird: Enable the onboard WiFi module

The Hummingbird A31 has an AMPAK AP6210 WiFi+Bluetooth module. The
WiFi part is a BCM43362 IC connected to MMC1 in the A31 SoC via SDIO.
The IC also takes a power enable signal via GPIO. This is supported
with the new power sequencing bindings.

The WiFi module supports out-of-band interrupt signaling via GPIO,
but this is not enabled yet.

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

diff --git a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
index d13c88c6509ac624f600398a642423b888ed8f7e..25a3ef49bb71a7fad49a10e07eca135239c59858 100644 (file)
--- a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
+++ b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
@@ -61,6 +61,11 @@
        chosen {
                bootargs = "earlyprintk console=ttyS0,115200";
        };
+
+       wifi_pwrseq: wifi_pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               reset-gpios = <&pio 6 10 GPIO_ACTIVE_LOW>; /* PG10 */
+       };
 };
 
 &ehci0 {
@@ -127,6 +132,16 @@
        allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
 };
 
+&mmc1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_pins_a>, <&wifi_reset_pin_hummingbird>;
+       vmmc-supply = <&vcc_wifi>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       bus-width = <4>;
+       non-removable;
+       status = "okay";
+};
+
 &ohci0 {
        status = "okay";
 };
@@ -138,6 +153,13 @@
                allwinner,drive = <SUN4I_PINCTRL_10_MA>;
                allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
        };
+
+       wifi_reset_pin_hummingbird: wifi_reset_pin@0 {
+               allwinner,pins = "PG10";
+               allwinner,function = "gpio_out";
+               allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+               allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+       };
 };
 
 &p2wi {