Re: [PATCH 4/9] drm/panel: simple: add support for overriding the pixel clock polarity

From: Lothar WaÃmann
Date: Tue Oct 17 2017 - 02:51:26 EST


Hi,

On Mon, 16 Oct 2017 17:13:29 -0500 Rob Herring wrote:
> On Wed, Oct 11, 2017 at 6:23 AM, Lothar WaÃmann <LW@xxxxxxxxxxxxxxxxxxx> wrote:
> > The Ka-Ro electronics MB7 baseboard has an on-board LCD->LVDS
> > converter that requires a fixed pixelclk polarity, no matter what the
> > panel's display_mode specifies. Add an option to override the pixelclk
> > polarity defined in the panel's display_mode via DTB.
>
> Wouldn't you know the polarity required based on the type of LVDS
> converter chip in front of the panel? Or is that not being described
> because it is "transparent".
>
Exactly the latter.


Lothar WaÃmann