.dts：
Code: Select all
&uart4 {
status = "okay";
pinctrl-names = "default";
princtrl-0 = <&uart5m0_xfer>;
};
uart Permission denied
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board：ultra w
.dts：- Attachments
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Hello, the serial port defined in the device tree does not match the pin. If you want to use uart4, princtrl-0 should be modified to <&uart4m1_xfer>;