Re: [PATCH v7 0/6] serial: mvebu-uart: Support for higher baudrates

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On Friday 14 January 2022 14:56:58 Stephen Boyd wrote:
> Quoting Pali Rohár (2022-01-14 02:51:00)
> > Hello Stephen!
> > 
> > On Friday 17 December 2021 18:23:00 Gregory CLEMENT wrote:
> > > Hello Pali,
> > > 
> > > > On Thursday 30 September 2021 11:58:32 Pali Rohár wrote:
> > > >> This patch series add support for baudrates higher than 230400 on
> > > >> Marvell Armada 37xx boards.
> > > >
> > > > Stephen, Gregory, are there any issues with this patch series?
> > > 
> > > I am not found of these changes but let's apply it as I didn't take time
> > > to do a better review.
> > > 
> > > However I can't apply the dt part if the driver is not merged.
> > 
> > Stephen, are there any issues with driver (non-DT) part changes in this
> > patch series? If not, could you please merge them? This patch series is
> > here on the list since September without any request for change...
> 
> Oh I missed this thread. I thought it was going to be resent.
> 
> > 
> > We would really like to see support for higher baudrates for Armada 3720
> > platforms in mainline kernel.
> 
> If we're adding new support why can't we break with backwards
> compatibility for the binding and do it a different way?

Because DTS are backwards compatible. I was told more times that kernel
drivers should work correctly with older DTS files. On some boards are
DTB files provided by bootloader and they do not use in-kernel DTS
files.



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