[PATCH] drm/tve200: Stabilize enable/disable

[Linus Walleij]

On Thu, Aug 20, 2020 at 10:32 PM Linus Walleij <linus.walleij at linaro.org> wrote:

> The TVE200 will occasionally print a bunch of lost interrupts
> and similar dmesg messages, sometimes during boot and sometimes
> after disabling and coming back to enablement. This is probably
> because the hardware is left in an unknown state by the boot
> loader that displays a logo.
>
> This can be fixed by bringing the controller into a known state
> by resetting the controller while enabling it. We retry reset 5
> times like the vendor driver does. We also put the controller
> into reset before de-clocking it and clear all interrupts before
> enabling the vblank IRQ.
>
> This makes the video enable/disable/enable cycle rock solid
> on the D-Link DIR-685. Tested extensively.
>
> Cc: stable at vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij at linaro.org>

Would someone have mercy on this patch and review or
at least ACK it so I can merge it?

I offer any reviews in return, on stuff I understand, such
as panel drivers.

Best regards,
Linus Walleij