arm64: dts: allwinner: orange-pi-3: Enable WiFi

Orange Pi 3 has AP6256 WiFi/BT module. WiFi part of the module is called
bcm43356 and can be used with the brcmfmac driver. The module is powered by
the two always on regulators (not AXP805).

WiFi uses a PG port with 1.8V voltage level signals. SoC needs to be
configured so that it sets up an 1.8V input bias on this port. This is done
by the pio driver by reading the vcc-pg-supply voltage.

You'll need a fw_bcm43456c5_ag.bin firmware file and nvram.txt
configuration that can be found in the Xulongs's repository for H6:

https://github.com/orangepi-xunlong/OrangePiH6_external/tree/master/ap6256

Mainline brcmfmac driver expects the firmware and nvram at the following
paths relative to the firmware directory:

  brcm/brcmfmac43456-sdio.bin
  brcm/brcmfmac43456-sdio.txt

Signed-off-by: Ondrej Jirman <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index eda9d5f640b9b64ea946db10348e46ccfdcedbae..eb379cd402ac451ef2db36c222ccd5e97ed0947c 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -56,6 +56,34 @@
                regulator-max-microvolt = <5000000>;
                regulator-always-on;
        };
+
+       reg_vcc33_wifi: vcc33-wifi {
+               /* Always on 3.3V regulator for WiFi and BT */
+               compatible = "regulator-fixed";
+               regulator-name = "vcc33-wifi";
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+               regulator-always-on;
+               vin-supply = <&reg_vcc5v>;
+       };
+
+       reg_vcc_wifi_io: vcc-wifi-io {
+               /* Always on 1.8V/300mA regulator for WiFi and BT IO */
+               compatible = "regulator-fixed";
+               regulator-name = "vcc-wifi-io";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               regulator-always-on;
+               vin-supply = <&reg_vcc33_wifi>;
+       };
+
+       wifi_pwrseq: wifi-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               clocks = <&rtc 1>;
+               clock-names = "ext_clock";
+               reset-gpios = <&r_pio 1 3 GPIO_ACTIVE_LOW>; /* PM3 */
+               post-power-on-delay-ms = <200>;
+       };
 };
 
 &cpu0 {
@@ -91,6 +119,23 @@
        status = "okay";
 };
 
+&mmc1 {
+       vmmc-supply = <&reg_vcc33_wifi>;
+       vqmmc-supply = <&reg_vcc_wifi_io>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       bus-width = <4>;
+       non-removable;
+       status = "okay";
+
+       brcm: sdio-wifi@1 {
+               reg = <1>;
+               compatible = "brcm,bcm4329-fmac";
+               interrupt-parent = <&r_pio>;
+               interrupts = <1 0 IRQ_TYPE_LEVEL_LOW>; /* PM0 */
+               interrupt-names = "host-wake";
+       };
+};
+
 &ohci0 {
        status = "okay";
 };
@@ -102,6 +147,7 @@
 &pio {
        vcc-pc-supply = <&reg_bldo2>;
        vcc-pd-supply = <&reg_cldo1>;
+       vcc-pg-supply = <&reg_vcc_wifi_io>;
 };
 
 &r_i2c {