[PATCH 4/4] drm/panel/ili9341: Support DPI panels

[Sam Ravnborg]

Hi Laurent/Noralf.

On Mon, Aug 12, 2019 at 06:35:42PM +0300, Laurent Pinchart wrote:
> On Mon, Aug 12, 2019 at 02:13:54PM +0200, Noralf Trønnes wrote:
> > Den 11.08.2019 18.41, skrev Sam Ravnborg:
> > > On Thu, Aug 01, 2019 at 03:52:49PM +0200, Noralf Trønnes wrote:
> > >> Add support for panels that use the DPI interface.
> > >> ILI9341 has onboard RAM so the assumption made here is that all such
> > >> panels support pixel upload over DBI.
> > >>
> > >> The presence/absense of the Device Tree 'port' node decides which
> > >> interface is used for pixel transfer.
> > >
> > > Have you consiered if the compatible could be used to determine the use
> > > of a panel? Then it is more explicit how the HW is described in DT.
> > 
> > Is that common to use the compatible to tell which interface to use?
> > I don't know what best practice is here.
> 
> Usually the compatible identifies the device, not the interface.
> Additional properties are preferred to describe the interface.
Thanks Laurent.
Then the ports idea as implmented by the patch seems to fly.

	Sam