[PATCH v8 03/14] drm: bridge: Generalize Exynos-DSI driver into a Samsung DSIM bridge

[Jagan Teki]

On Thu, Nov 17, 2022 at 10:31 AM Marek Vasut <marex at denx.de> wrote:
>
> On 11/10/22 19:38, Jagan Teki wrote:
>
> [...]
>
> > +static int samsung_dsim_wait_for_hdr_fifo(struct samsung_dsim *dsi)
> > +{
> > +     int timeout = 2000;
> > +
> > +     do {
> > +             u32 reg = samsung_dsim_read(dsi, DSIM_FIFOCTRL_REG);
> > +
> > +             if (!(reg & DSIM_SFR_HEADER_FULL))
>
> Seems that unless I wait for DSIM_SFR_HEADER_EMPTY here, there may be
> some command transfer corruption if very short commands are transferred
> in rapid succession. This can be triggered with icn6211 driver for example.

Not aware of this test, maybe adjusting or fixing the wait code on top
of this initial support later make sense.

Thanks,
Jagan.