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
