(EXT) Re: [PATCH v4 1/4] dt-bindings: display: bridge: sn65dsi83: Make enable GPIO optional

[Alexander Stein]

Am Donnerstag, dem 09.12.2021 um 12:37 +0530 schrieb Jagan Teki:
> On Thu, Nov 18, 2021 at 2:50 PM Alexander Stein
> <
> alexander.stein at ew.tq-group.com
> > wrote:
> > From: Laurent Pinchart <
> > laurent.pinchart at ideasonboard.com
> > >
> > 
> > The SN65DSI8x EN signal may be tied to VCC, or otherwise controlled
> > by
> > means not available to the kernel. Make the GPIO optional.
> 
> Sorry, I couldn't understand what it means. Does it mean VCC enabled
> designs no need to enable GPIO? I've a design that do support both EN
> and VCC.

The patches 1 & 2 are only about the "enable" gpio for the bridge, it's
unrelated to the VCC regulator introduced in patch 3 & 4.
Maybe the commit message should say:
> The SN65DSI8x EN signal may be hard-wired to VCC, or otherwise
controlled[...]
But I copied the message from bbda1704fc15 ("drm/bridge: ti-sn65dsi86:
Make enable GPIO optional").

This is for use-cases where there is no GPIO the kernel can use, to
control the EN pad of the bridge. Thus make this gpio optional in
bindings and driver.

HTH
Alexander