Subject: Re: [PATCH 10/12] arm64: dts: rockchip: Add PX30 CRTCs graph LVDS endpoints

From: Miquel Raynal <[email-masked]>
Date: Fri, 13 Dec 2019 19:38:46 +0100

Hi Heiko,

Heiko Stübner <[email-masked]> wrote on Fri, 13 Dec 2019 19:28:21
+0100:

> Hi Miquel,
> 
> Am Freitag, 13. Dezember 2019, 19:10:49 CET schrieb Miquel Raynal:
> > Add the display subsystem routes with the two available CRTCs: vopb
> > and vopl (big and little). For each CRTC, add the LVDS endpoints. MIPI
> > DSI endpoints will come later.
> > 
> > Signed-off-by: Miquel Raynal <[email-masked]>
> > ---
> >  arch/arm64/boot/dts/rockchip/px30.dtsi | 20 ++++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/px30.dtsi b/arch/arm64/boot/dts/rockchip/px30.dtsi
> > index b2af0f02ecbe..1c96ba556daf 100644
> > --- a/arch/arm64/boot/dts/rockchip/px30.dtsi
> > +++ b/arch/arm64/boot/dts/rockchip/px30.dtsi
> > @@ -190,6 +190,16 @@
> >  		compatible = "rockchip,display-subsystem";
> >  		ports = <&vopb_out>, <&vopl_out>;
> >  		status = "disabled";
> > +
> > +		route {
> > +			route_vopb_lvds: route-vopb-lvds {
> > +				connect = <&vopb_out_lvds>;
> > +			};
> > +
> > +			route_vopl_lvds: route-vopl-lvds {
> > +				connect = <&vopl_out_lvds>;
> > +			};
> > +		};  
> 
> where does this route-stuff come from?
> The vendor tree? Because so far I've not seen this in mainline-drm
> in general nor the Rockchip drm driver itself.

Yes it comes from the vendor tree, I added a few things from the vendor
tree in the "I really want this panel to work" phase and I forgot to
check if it could be removed, I'll probably drop this.
 
> 
> 
> >  	};
> >  
> >  	gmac_clkin: external-gmac-clock {
> > @@ -976,6 +986,11 @@
> >  		vopb_out: port {
> >  			#address-cells = <1>;
> >  			#size-cells = <0>;
> > +
> > +			vopb_out_lvds: endpoint@0 {
> > +				reg = <0>;
> > +				remote-endpoint = <&lvds_vopb_in>;
> > +			};  
> 
> This (and the one below) would create dangling phandle references
> and compile errors, because the referenced phandles only get introduced
> in patch12. So ideally merge this into the last patch.

Actually patch 12 also references these nodes so I should merge them.

> 
> 
> Heiko
> 
> >  		};
> >  	};
> >  
> > @@ -1008,6 +1023,11 @@
> >  		vopl_out: port {
> >  			#address-cells = <1>;
> >  			#size-cells = <0>;
> > +
> > +			vopl_out_lvds: endpoint@0 {
> > +				reg = <0>;
> > +				remote-endpoint = <&lvds_vopl_in>;
> > +			};
> >  		};
> >  	};
> >  
> >   
> 
> 
> 
> 

Thanks for the review!
Miquèl

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