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

[AngeloGioacchino Del Regno]

On 7/15/26 14:53, Esben Haabendal wrote:
> 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

That clarifies a lot of things.

The patch on mtk_dsi shall be reverted then.

Cheers,
Angelo