6.5-rc1 breakage in samsung-dsim

[Jagan Teki]

On Thu, Jul 13, 2023 at 12:22 AM Tim Harvey <tharvey at gateworks.com> wrote:
>
> Greetings,
>
> I've noticed a regression in 6.5-rc1 that I'm having trouble bisecting
> between 6.4 with regards to imx8mm MIPI DSI.
>
> I'm testing on an imx8mm-venice-gw72xx-0x with the following display:
>  - Powertip PH800480T013-IDF02 compatible panel
>  - Toshiba TC358762 compatible DSI to DBI bridge
>  - ATTINY based regulator used for backlight controller and panel enable
>
> I'm using a dt overlay to support this [1] which works on 6.4 but on
> 6.5-rc1 I get the following error:
> [    6.110585] samsung-dsim 32e60000.dsi: xfer timed out: 29 06 00 00
> 64 01 05 00 00 00
> [    6.326588] tc358762 32e60000.dsi.0: error initializing bridge (-110)
>
> I'm trying to bisect this for some reason. Does anyone have any idea
> what may be causing this or how I can debug it?

What if you can revert or drop the dynamic PHY configuration (HEAD ...
a617b33f7e51)? can you check it?

Thanks,
Jagan.