Hi Junhao, > ... > --- /dev/null > +++ b/arch/arm64/boot/dts/rockchip/rk3568-photonicat.dts > ... > + rfkill-modem { > + compatible = "rfkill-gpio"; > + label = "M.2 USB Modem"; > + radio-type = "wwan"; > + reset-gpios = <&gpio0 RK_PB0 GPIO_ACTIVE_LOW>; > + shutdown-gpios = <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>; > + }; gpio0 RK_PB0 conflicts with xin32k, please add: &xin32k { pinctrl-names = "default"; pinctrl-0 = <&clk32k_out1>; }; > + vccin_5v: regulator-5v0-vcc-in { > + vcc_sysin: regulator-5v0-vcc-sysin { > + vcc_syson: regulator-5v0-vcc-syson { > + vcc5v0_usb30_otg0: regulator-5v0-vcc-usb-host { obviously ( -- 2.25.1