[PATCHv2 13/22] drm/bridge: tc358767: use more reliable seq when finishing LT

[Andrzej Hajda]

On 26.03.2019 11:31, Tomi Valkeinen wrote:
> At the end of the link training, two steps have to be taken: 1)
> tc358767's LT mode is disabled by a write to DP0_SRCCTRL, and 2) Remove
> LT flag in DPCD 0x102.
>
> Toshiba's documentation tells to first write the DPCD, then modify
> DP0_SRCCTRL. In my testing this often causes issues, and the link
> disconnects right after those steps.
>
> If I reverse the steps, it works every time. There's a chance that this
> is DP sink specific, though, but as my testing shows this sequence to be
> much more reliable, let's change it.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
Reviewed-by: Andrzej Hajda <a.hajda at samsung.com>

 --
Regards
Andrzej