On Fri, May 11, 2018 at 09:33:23AM -0500, Rob Herring wrote:
> The rcar DT overlays are missing symetrical remote-endpoint properties
> in their graph nodes because the remote-endpoint is fixed up at
> run-time. Disable the dtc 'graph-endpoint' warnings when compiling these
> overlays. If this becomes a common problem for overlays, then perhaps
> this check needs to be disabled for all overlays.
> 
> Reported-by: Stephen Rothwell <s...@canb.auug.org.au>
> Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Cc: David Airlie <airl...@linux.ie>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-renesas-...@vger.kernel.org
> Signed-off-by: Rob Herring <r...@kernel.org>

Acked-by: Simon Horman <horms+rene...@verge.net.au>

> ---
> This needs to go thru my tree because it is dependent on the dtc update 
> that adds the warning (perhaps we're going to need to add option 
> checking for dtc).
> 
> Rob 
> 
>  drivers/gpu/drm/rcar-du/Makefile | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/rcar-du/Makefile 
> b/drivers/gpu/drm/rcar-du/Makefile
> index 3e58ed93d5b1..2a3b8d7972b5 100644
> --- a/drivers/gpu/drm/rcar-du/Makefile
> +++ b/drivers/gpu/drm/rcar-du/Makefile
> @@ -17,3 +17,10 @@ rcar-du-drm-$(CONFIG_DRM_RCAR_VSP) += rcar_du_vsp.o
>  obj-$(CONFIG_DRM_RCAR_DU)            += rcar-du-drm.o
>  obj-$(CONFIG_DRM_RCAR_DW_HDMI)               += rcar_dw_hdmi.o
>  obj-$(CONFIG_DRM_RCAR_LVDS)          += rcar_lvds.o
> +
> +# 'remote-endpoint' is fixed up at run-time
> +DTC_FLAGS_rcar_du_of_lvds_r8a7790 += -Wno-graph_endpoint
> +DTC_FLAGS_rcar_du_of_lvds_r8a7791 += -Wno-graph_endpoint
> +DTC_FLAGS_rcar_du_of_lvds_r8a7793 += -Wno-graph_endpoint
> +DTC_FLAGS_rcar_du_of_lvds_r8a7795 += -Wno-graph_endpoint
> +DTC_FLAGS_rcar_du_of_lvds_r8a7796 += -Wno-graph_endpoint
> -- 
> 2.17.0
> 
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