[PATCH 3/3] arm64: dts: rockchip: theoretically enable Wi-Fi on ROCK 4D
Nicolas Frattaroli
nicolas.frattaroli at collabora.com
Mon Jun 30 08:36:35 PDT 2025
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 at collabora.com>
---
arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts | 30 +++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
index ed8b018539acb77328627c24b88a5a220fe085d2..291b6e4ffdac86280280de49c30de7ddde80462b 100644
--- a/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3576-rock-4d.dts
@@ -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;
@@ -703,6 +724,15 @@ 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 {
--
2.50.0
More information about the Linux-rockchip
mailing list