Re: [PATCH] drm/mediatek: mtk_dsi: enable hs clock during pre-enable

[Esben Haabendal]

Gary Bisson <bisson.gary@xxxxxxxxx> writes:

> Some bridges, such as the TI SN65DSI83, require the HS clock to be
> running in order to lock its PLL during its own pre-enable function.
>
> Without this change, the bridge gives the following error:
> sn65dsi83 14-002c: failed to lock PLL, ret=-110
> sn65dsi83 14-002c: Unexpected link status 0x01
> sn65dsi83 14-002c: reset the pipe
>
> Move the necessary functions from enable to pre-enable.
>
> Signed-off-by: Gary Bisson <bisson.gary@xxxxxxxxx>

Hi

I have run into the same problem, but in combination with another
pipeline. I am seeing same problem with an i.MX8 using the nwl-dsi
bridge and the dcss driver.

I have submitted a fix that adresses the problem in the ti-sn65dsi83
driver instead. With a bit of luck, it can replace the fix proposed in
this thread.

See https://lore.kernel.org/all/20260711-ti-sn65dsi83-fixes-v1-2-d85eb5342b98@xxxxxxxxxx/

/Esben