On Thursday 29 Sep 2016 08:35:32 Geert Uytterhoeven wrote:
> On Thu, Sep 29, 2016 at 6:14 AM, Jithin T Raj wrote:
> > I have successfully applied the patch and build R-car M2 Kernel for
> > Koelsch Board..now it support LVDS..Thank you all especially Geert and
> > Laurent..now i tried the same source tree(v4.7.5) to build for R-Car
> 
> Good to hear it works on Koelsch!
> 
> > E2(ALT)Board to make LVDS up..but i am getting the following error
> > during making .dtb file
> > 
> > ubuntu@teltvm2468l:~/jithin_new/linux-4.7.5$ make -j4 r8a7794-alt.dtb
> > 
> >   DTC     arch/arm/boot/dts/r8a7794-alt.dtb
> > 
> > Error: arch/arm/boot/dts/r8a77xx-aa104xd12-panel.dtsi:39.1-16 Label or
> > path lvds_connector not found FATAL ERROR: Syntax error parsing input
> > tree
> > make[1]: *** [arch/arm/boot/dts/r8a7794-alt.dtb] Error 1
> > make: *** [r8a7794-alt.dtb] Error 2
> > ubuntu@teltvm2468l:~/jithin_new/linux-4.7.5$
> > 
> > I have included the "#include "r8a77xx-aa104xd12-panel.dtsi" in
> > r8a7794-alt.dts
> > 
> > my source tree is v4.7.5 stable edition
> 
> No one has added LVDS support for r8a7794/alt yet.

The R8A7794 has no LVDS output. The Alt board uses an RGB to LVDS bridge, 
similar to the one used by the Marzen board. You can have a look at the Marzen 
DT to see how to implement that.

-- 
Regards,

Laurent Pinchart

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