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 buggy and not enabled yet.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
arch/arm/boot/dts/sun6i-a31-hummingbird.dts | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
b/arch/arm/boot/dts/sun6i-a31-hummingbird.dts
index d13c88c6509a..25a3ef49bb71 100644
--- 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 {
--
2.1.4
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