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Date: Wed, 11 Mar 2020 10:48:56 +0000
From: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
CC: Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Magnus Damm <magnus.damm@...il.com>,
DRI Development <dri-devel@...ts.freedesktop.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: RE: [PATCH v3 2/2] arm64: dts: renesas: Add HiHope RZ/G2M board with
idk-1110wr display
Hi Geert,
Thank you for the review.
> -----Original Message-----
> From: Geert Uytterhoeven <geert@...ux-m68k.org>
> Sent: 11 March 2020 10:08
> To: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>
> Cc: Thierry Reding <thierry.reding@...il.com>; Sam Ravnborg
> <sam@...nborg.org>; David Airlie <airlied@...ux.ie>; Daniel Vetter
> <daniel@...ll.ch>; Rob Herring <robh+dt@...nel.org>; Mark Rutland
> <mark.rutland@....com>; Magnus Damm <magnus.damm@...il.com>;
> DRI Development <dri-devel@...ts.freedesktop.org>; open list:OPEN
> FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
> <devicetree@...r.kernel.org>; Linux Kernel Mailing List <linux-
> kernel@...r.kernel.org>; Linux-Renesas <linux-renesas-
> soc@...r.kernel.org>
> Subject: Re: [PATCH v3 2/2] arm64: dts: renesas: Add HiHope RZ/G2M board
> with idk-1110wr display
>
> Hi Lad,
>
> On Tue, Mar 10, 2020 at 9:42 PM Lad Prabhakar <prabhakar.mahadev-
> lad.rj@...renesas.com> wrote:
> > From: Fabrizio Castro <fabrizio.castro@...renesas.com>
> >
> > The HiHope RZ/G2M is advertised as compatible with panel idk-1110wr
> > from Advantech, however the panel isn't sold alongside the board.
> > A new dts, adding everything that's required to get the panel to work
> > the HiHope RZ/G2M, is the most convenient way to support the HiHope
> > RZ/G2M when it's connected to the idk-1110wr.
> >
> > Signed-off-by: Fabrizio Castro <fabrizio.castro@...renesas.com>
> > Acked-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-
> lad.rj@...renesas.com>
>
> Thanks for picking up this patch!
>
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-
> 1110wr.
> > +++ dts
> > @@ -0,0 +1,86 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Device Tree Source for the HiHope RZ/G2M sub board connected to an
> > + * Advantech IDK-1110WR 10.1" LVDS panel
> > + *
> > + * Copyright (C) 2020 Renesas Electronics Corp.
> > + */
> > +
> > +#include "r8a774a1-hihope-rzg2m-ex.dts"
> > +
> > +/ {
> > + backlight {
> > + compatible = "pwm-backlight";
> > + pwms = <&pwm0 0 50000>;
> > +
> > + brightness-levels = <0 2 8 16 32 64 128 255>;
> > + default-brightness-level = <6>;
> > + };
> > +
> > + panel-lvds {
> > + compatible = "advantech,idk-1110wr", "panel-lvds";
> > +
> > + width-mm = <223>;
> > + height-mm = <125>;
> > +
> > + data-mapping = "jeida-24";
> > +
> > + panel-timing {
> > + /* 1024x600 @60Hz */
> > + clock-frequency = <51200000>;
> > + hactive = <1024>;
> > + vactive = <600>;
> > + hsync-len = <240>;
> > + hfront-porch = <40>;
> > + hback-porch = <40>;
> > + vfront-porch = <15>;
> > + vback-porch = <10>;
> > + vsync-len = <10>;
> > + };
> > +
> > + port {
> > + panel_in: endpoint {
> > + remote-endpoint = <&lvds0_out>;
> > + };
> > + };
> > + };
>
> I believe the plan was to include the existing rzg2-advantech-idk-1110wr-
> panel.dtsi instead, to provide the panel-lvds node...
>
Ahha missed it, I'll quickly respin the series fixing it.
> > +};
> > +
> > +&gpio1 {
> > + /*
> > + * When GP1_20 is LOW LVDS0 is connected to the LVDS connector
> > + * When GP1_20 is HIGH LVDS0 is connected to the LT8918L
> > + */
> > + lvds-connector-en-gpio {
> > + gpio-hog;
> > + gpios = <20 GPIO_ACTIVE_HIGH>;
> > + output-low;
> > + line-name = "lvds-connector-en-gpio";
> > + };
> > +};
> > +
> > +&lvds0 {
> > + status = "okay";
> > +
> > + ports {
> > + port@1 {
> > + lvds0_out: endpoint {
> > + remote-endpoint = <&panel_in>;
> > + };
> > + };
> > + };
> > +};
>
> ... and the lvds_connector endpoint configuration.
>
Agreed.
Cheers,
--Prabhakar
> The rest looks good to me.
>
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-
> m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> -- Linus Torvalds
Renesas Electronics Europe GmbH, Geschaeftsfuehrer/President: Carsten Jauch, Sitz der Gesellschaft/Registered office: Duesseldorf, Arcadiastrasse 10, 40472 Duesseldorf, Germany, Handelsregister/Commercial Register: Duesseldorf, HRB 3708 USt-IDNr./Tax identification no.: DE 119353406 WEEE-Reg.-Nr./WEEE reg. no.: DE 14978647
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