[PATCH 2/2] drm/bridge: lt9611: Do not generate HFP/HBP/HSA and EOT packet

Jagan Teki jagan at amarulasolutions.com
Wed Jul 5 05:30:49 UTC 2023


Hi Amit,

On Wed, Jul 5, 2023 at 10:15 AM Amit Pundir <amit.pundir at linaro.org> wrote:
>
> Hi Marek,
>
> On Wed, 5 Jul 2023 at 01:48, Marek Vasut <marex at denx.de> wrote:
> >
> > Do not generate the HS front and back porch gaps, the HSA gap and
> > EOT packet, as these packets are not required. This makes the bridge
> > work with Samsung DSIM on i.MX8MM and i.MX8MP.
>
> This patch broke display on Dragonboard 845c (SDM845) devboard running
> AOSP. This is what I see
> https://people.linaro.org/~amit.pundir/db845c-userdebug/v6.5-broken-display/PXL_20230704_150156326.jpg.
> Reverting this patch fixes this regression for me.

Might be msm dsi host require proper handling on these updated
mode_flags? did they?

Thanks,
Jagan.


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