On Thu, May 25, 2023 at 09:32:59AM +0530, Venkatesh Yadav Abbarapu wrote:
> From: Algapally Santosh Sagar <santoshsagar.algapa...@amd.com>
>
> The baudrate configured in .config is taken by default by serial. If
> change of baudrate is required then the .config needs to changed and
> u-boot recompilation is required or the u-boot environment needs to be
> updated.
>
> To avoid this, support is added to fetch the baudrate directly from the
> device tree file and update.
> The serial, prints the log with the configured baudrate in the dtb.
> The commit c4df0f6f315c ("arm: mvebu: Espressobin: Set default value for
> $fdtfile env variable") is taken as reference for changing the default
> environment variable.
>
> The default environment stores the default baudrate value, When default
> baudrate and dtb baudrate are not same glitches are seen on the serial.
> So, the environment also needs to be updated with the dtb baudrate to
> avoid the glitches on the serial.
>
> Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapa...@amd.com>
> Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbar...@amd.com>
> ---
> doc/README.serial_dt_baud | 41 +++++++++++++++++++++++++++++++++Sorry I missed this until v5. This needs to be in rST and under doc/ somewhere (and make htmldocs happy). -- Tom
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