[PATCH v1 RFC 1/3] dt-bindings: serial: amlogic,meson-uart: Add compatible string for G12A

[Krzysztof Kozlowski]

On 23/02/2023 21:14, Martin Blumenstingl wrote:
> 
>> The question is whether the devices can be made compatible thus keeping
>> DTS working on older kernel. This commit suggests they are. Your DTS
>> commit is written in different tone - something was broken and is being
>> fixed.
> If we keep "amlogic,meson-gx-uart" as fallback compatible string then
> old kernels (or other .dtb consumers - like u-boot) would still work.
> Without the new "amlogic,meson-g12a-uart" compatible string we're
> unable to make use of a newly added clock divider within the UART IP
> block which allows baud rates such as 1500000 to work without (a lot
> of) jitter. Old kernels - with the new .dtb - would still be able to
> use serial (thanks to the "amlogic,meson-gx-uart" fallback compatible
> string) albeit with limited divider support (so not all baud rates can
> be used).
> Is this a valid plan?

Yes.

Best regards,
Krzysztof