Hi Kieran,
On Mon, Jan 17, 2022 at 11:52:10AM +0000, Kieran Bingham wrote:
> Quoting Laurent Pinchart (2021-12-12 01:33:51)
> > The Draak and Ebisu boards support an optional LVDS panel. One
> > compatible panel is the Mitsubishi AA104XD12. Add a corresponding DT
> > overlay.
> >
> > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/renesas/Makefile | 1 +
> > .../renesas/draak-ebisu-panel-aa104xd12.dts | 32 +++++++++++++++++++
> > 2 files changed, 33 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/renesas/draak-ebisu-panel-aa104xd12.dts
> >
> > diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
> > index 982ca3e0e86f..5e831bd33828 100644
> > --- a/arch/arm64/boot/dts/renesas/Makefile
> > +++ b/arch/arm64/boot/dts/renesas/Makefile
> > @@ -76,3 +76,4 @@ dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs.dtb
> > dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb
> >
> > dtb-$(CONFIG_ARCH_RCAR_GEN3) += salvator-panel-aa104xd12.dtbo
> > +dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo
> > diff --git a/arch/arm64/boot/dts/renesas/draak-ebisu-panel-aa104xd12.dts b/arch/arm64/boot/dts/renesas/draak-ebisu-panel-aa104xd12.dts
> > new file mode 100644
> > index 000000000000..0c5dc3df5247
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/renesas/draak-ebisu-panel-aa104xd12.dts
> > @@ -0,0 +1,32 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Device Tree overlay for the AA104XD12 panel connected to LVDS1 on a Draak or
> > + * Ebisu board
> > + *
> > + * Copyright 2021 Ideas on Board Oy
> > + */
> > +
> > +/dts-v1/;
> > +/plugin/;
> > +
> > +&{/} {
> > +#include "panel-aa104xd12.dtsi"
> > +};
> > +
> > +&{/panel} {
> > + backlight = <&backlight>;
> > +
> > + port {
> > + panel_in: endpoint {
> > + remote-endpoint = <&lvds1_out>;
>
> I guess we can't use parameters in overlays yet? The LVDS reference
> seems to be the only difference between the two. But I guess even that
> might be hard to pass in as a parameter at boot, or run time...
Nobody is working on standardizing parametric overlays as far as I'm
aware :-( Support exists in the Rasperry Pi proprietary boot loader, it
could be used as a starting point, but we need someone to drive the
effort.
> > + };
> > + };
> > +};
> > +
> > +&lvds1 {
> > + status = "okay";
> > +};
> > +
> > +&lvds1_out {
> > + remote-endpoint = <&panel_in>;
> > +};
--
Regards,
Laurent Pinchart
