On 14/03/2024 06:19, Xianwei Zhao wrote:
>>> +
>>> + apb@fe000000 {
>>> + compatible = "simple-bus";
>>> + reg = <0x0 0xfe000000 0x0 0x480000>;
>>> + #address-cells = <2>;
>>> + #size-cells = <2>;
>>> + ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
>>> +
>>> + uart_b: serial@7a000 {
>>> + compatible = "amlogic,meson-s4-uart",
>>
>> If I'm not wrong, you need to create dt-binding alias for meson-a4-uart
>> and use it as 3rd compatible string.
>>
> On UART module, A4 and A5 SoCs exactly the same as S4. There's no
> difference.
That's not really the point. You are supposed to always provide SoC
specific compatible in front of the fallback. See writing bindings document.
Best regards,
Krzysztof
