linux-kernel - Re: [PATCH v3 10/10] arm64: dts: renesas: gray-hawk-single: Add DisplayPort support

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Message-ID: <CAMuHMdXsmnPrXSWqh_JN04d+Gh=X=4SWKEWZyfUE6Mim97d06Q@mail.gmail.com>
Date: Wed, 11 Dec 2024 09:16:23 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
	Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
	Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Robert Foss <rfoss@...nel.org>, Jonas Karlman <jonas@...boo.se>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, David Airlie <airlied@...il.com>, 
	Simona Vetter <simona@...ll.ch>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Geert Uytterhoeven <geert+renesas@...der.be>, Magnus Damm <magnus.damm@...il.com>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	LUU HOAI <hoai.luu.ub@...esas.com>, Jagan Teki <jagan@...rulasolutions.com>, 
	Sam Ravnborg <sam@...nborg.org>, Biju Das <biju.das.jz@...renesas.com>, 
	dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, linux-clk@...r.kernel.org, 
	Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: Re: [PATCH v3 10/10] arm64: dts: renesas: gray-hawk-single: Add
 DisplayPort support

Hi Tomi,

On Tue, Dec 10, 2024 at 7:10 PM Tomi Valkeinen
<tomi.valkeinen@...asonboard.com> wrote:

> On 10/12/2024 18:34, Geert Uytterhoeven wrote:
> > On Fri, Dec 6, 2024 at 10:33 AM Tomi Valkeinen
> > <tomi.valkeinen@...asonboard.com> wrote:
> >> From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> >>
> >> Add support for the mini DP output on the Gray Hawk board.
> >>
> >> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> >> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> >> Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
> >
> > Thanks for your patch!
> >
> >> --- a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
> >> +++ b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts

> >> +               compatible = "ti,sn65dsi86";
> >> +               reg = <0x2c>;
> >> +
> >> +               clocks = <&sn65dsi86_refclk>;
> >> +               clock-names = "refclk";
> >> +
> >> +               interrupt-parent = <&intc_ex>;
> >> +               interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
> >
> > interrupts-extended = ...
>
> Is that just to use the same style in the whole dts, or is there some
> specific need for the extended one here?

There is no real technical need to use the extended one, but it is
more concise. That's why we just converted all such cases in Renesas
DTS files in v6.13-rc1.

And of course it reduces the difference between
arch/arm64/boot/dts/renesas/white-hawk-cpu-common.dtsi and
arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts.

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