Re: [PATCH v2 4/6] drm/bridge: ti-sn65dsi86: Wrap panel with panel-bridge

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Stephen,

On Tue, Aug 10, 2021 at 10:26:33PM -0700, Stephen Boyd wrote:
> Quoting Laurent Pinchart (2021-06-23 17:03:02)
> > To simplify interfacing with the panel, wrap it in a panel-bridge and
> > let the DRM bridge helpers handle chaining of operations.
> >
> > This also prepares for support of DRM_BRIDGE_ATTACH_NO_CONNECTOR, which
> > requires all components in the display pipeline to be represented by
> > bridges.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
> > ---
> 
> With this patch applied I get two eDP devices on Lazor sc7180 (it is the
> arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor*.dts files if you're
> looking for more info). As far as I can tell, we should only have one
> eDP device on the board, for the bridge.
> 
> localhost ~ # ls -l /sys/class/drm/card1-eDP*
> lrwxrwxrwx. 1 root root 0 Aug 10 22:24 /sys/class/drm/card1-eDP-1 ->
> ../../devices/platform/soc@0/ae00000.mdss/drm/card1/card1-eDP-1
> lrwxrwxrwx. 1 root root 0 Aug 10 22:24 /sys/class/drm/card1-eDP-2 ->
> ../../devices/platform/soc@0/ae00000.mdss/drm/card1/card1-eDP-2

Indeed.

Does the display driver use the DRM connector bridge helper and
DRM_BRIDGE_ATTACH_NO_CONNECTOR on that platform ?

-- 
Regards,

Laurent Pinchart