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arm64: dts: rockchip: Enable USB 2.0 ports on Radxa E20C

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The Radxa E20C has one USB2.0 Type-A HOST port and one USB2.0 Type-C port.

The Type-C port is conneced to a FE1.1s_QFN USB hub on the board, with its
ports being connected to the XHCI usb controller and an usb-uart bridge.

This also means, the XHCI controller can only be used in device-mode.

Add support for using the USB 2.0 ports on Radxa E20C.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
[set xhci to peripheral and add comment about the outward-facing hub]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20260529190355.4148175-3-heiko@sntech.de
This commit is contained in:
Jonas Karlman 2026-05-29 21:03:52 +02:00 committed by Heiko Stuebner
parent 5f3ae9b12a
commit e897bcf81d
1 changed files with 60 additions and 0 deletions
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60
arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
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@ -134,6 +134,18 @@ vcc5v0_sys: regulator-5v0-vcc-sys {
regulator-max-microvolt = <5000000>;
};
vcc5v0_usb20: regulator-5v0-vcc-usb20 {
compatible = "regulator-fixed";
enable-active-high;
gpios = <&gpio0 RK_PA1 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&usb_host_en>;
regulator-name = "vcc5v0_usb20";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
vin-supply = <&vcc5v0_sys>;
};
vccio_sd: regulator-vccio-sd {
compatible = "regulator-gpio";
gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
@ -273,6 +285,12 @@ sdmmc_vol_ctrl_h: sdmmc-vol-ctrl-h {
rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
usb {
usb_host_en: usb-host-en {
rockchip,pins = <0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
};
&pwm1 {
@ -320,3 +338,45 @@ &uart0 {
pinctrl-0 = <&uart0m0_xfer>;
status = "okay";
};
&usb_host0_ehci {
status = "okay";
};
&usb_host0_ohci {
status = "okay";
};
/*
* The usb controller can only work in peripheral mode, as it is
* connected to one of the ports of an outward-facing usb hub.
*
* type_c-port (hub-input)
* |
* usb-hub
* | |
* uart-usb usb-host0
* |
* uart0
*/
&usb_host0_xhci {
dr_mode = "peripheral";
extcon = <&usb2phy>;
maximum-speed = "high-speed";
phys = <&usb2phy_otg>;
phy-names = "usb2-phy";
status = "okay";
};
&usb2phy {
status = "okay";
};
&usb2phy_host {
phy-supply = <&vcc5v0_usb20>;
status = "okay";
};
&usb2phy_otg {
status = "okay";
};