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arm64: dts: rockchip: theoretically enable Wi-Fi on ROCK 4D

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The production version of the ROCK 4D appears to sport a AICSEMI
AIC8800D80 USB Wi-Fi + BT chipset. This chip does not yet have a
mainline driver.

Add the necessary rfkill node and wifi regulator node to at least make
it show up in lsusb output. The regulator is set as always-on, as like 2
hours deep into debugging why onboard_usb_dev.c wouldn't try enabling
the regulator the device needs to actually show up and thus bind to
onboard_usb_dev.c, I decided that it's not worth the effort.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Link: https://lore.kernel.org/r/20250630-rock4d-reg-usb-wifi-v1-3-1057f412d98c@collabora.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Nicolas Frattaroli 2025-06-30 17:36:35 +02:00 committed by Heiko Stuebner
parent 787595b423
commit eebf59470a
1 changed files with 30 additions and 0 deletions
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30
arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
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@ -37,6 +37,14 @@ hdmi_con_in: endpoint {
};
};
rfkill {
compatible = "rfkill-gpio";
pinctrl-names = "default";
pinctrl-0 = <&wifi_en_h>;
radio-type = "wlan";
shutdown-gpios = <&gpio2 RK_PD1 GPIO_ACTIVE_HIGH>;
};
leds: leds {
compatible = "gpio-leds";
pinctrl-names = "default";
@ -159,6 +167,19 @@ vcc_3v3_ufs_s0: regulator-vcc-ufs-s0 {
vin-supply = <&vcc_5v0_sys>;
};
vcc_3v3_wifi: regulator-vcc-3v3-wifi {
compatible = "regulator-fixed";
enable-active-high;
gpios = <&gpio2 RK_PC7 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&usb_wifi_pwr>;
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc_3v3_wifi";
vin-supply = <&vcc_3v3_s3>;
};
vcc_5v0_device: regulator-vcc-5v0-device {
compatible = "regulator-fixed";
regulator-always-on;
@ -720,6 +741,15 @@ usb_otg_pwren: usb-otg-pwren {
};
};
wifi {
usb_wifi_pwr: usb-wifi-pwr {
rockchip,pins = <2 RK_PC7 RK_FUNC_GPIO &pcfg_pull_down>;
};
wifi_en_h: wifi-en-h {
rockchip,pins = <2 RK_PD1 RK_FUNC_GPIO &pcfg_pull_down>;
};
};
};
&sdmmc {