I want to use UARTC as serial console in u-boot before start kernel, but I don’t know how to setting it.
u-boot VERSION:2020,04
modify:arch\arm\dts\tegra186-p2771-0000.dtsi
chosen {
-stdout-path = &uarta;
+stdout-path = &uartc;
};
-&uarta {
+&uartc {
status = “okay”;
};
arch\arm\dts\tegra186.dtsi:
- uartc: serial@c280000 {
-
compatible = "nvidia,tegra186-uart", "nvidia,tegra20-uart";
-
reg = <0x0 0x0c280000 0x0 0x40>;
-
reg-shift = <2>;
-
status = "disabled";
- };
4.log (25.2 KB)