arm64: allwinner: a64-amarula-relic: Enable AP6330 WiFi support

Enable AP6330 WiFi/BT combo chip on Amarula A64-Relic board:
- WiFi SDIO interface is connected to MMC1
- WiFi WL-PMU-EN pin connected to gpio PL2: attach to mmc-pwrseq
- WiFi WL-WAKE-AP pin connected to gpio PL3
- 32kHz external oscillator gate clock from RTC

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
index ce4a256..eac4793 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-amarula-relic.dts
@@ -21,12 +21,43 @@
        chosen {
                stdout-path = "serial0:115200n8";
        };
+
+       wifi_pwrseq: wifi-pwrseq {
+               compatible = "mmc-pwrseq-simple";
+               clocks = <&rtc 1>;
+               clock-names = "ext_clock";
+               reset-gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* WL-PMU-EN: PL2 */
+       };
 };
 
 &ehci0 {
        status = "okay";
 };
 
+&mmc1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc1_pins>;
+       vmmc-supply = <&reg_dcdc1>;
+       /*
+        * Schematic shows both dldo4 and eldo1 connected for vcc-io-wifi, but
+        * dldo4 connection shows DNP(Do Not Populate) and eldo1 connected with
+        * 0Ohm register to vcc-io-wifi so eldo1 is used.
+        */
+       vqmmc-supply = <&reg_eldo1>;
+       mmc-pwrseq = <&wifi_pwrseq>;
+       bus-width = <4>;
+       non-removable;
+       status = "okay";
+
+       brcmf: wifi@1 {
+               reg = <1>;
+               compatible = "brcm,bcm4329-fmac";
+               interrupt-parent = <&r_pio>;
+               interrupts = <0 3 IRQ_TYPE_LEVEL_LOW>;  /* WL-WAKE-AP: PL3 */
+               interrupt-names = "host-wake";
+       };
+};
+
 &mmc2 {
        pinctrl-names = "default";
        pinctrl-0 = <&mmc2_pins>;