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Message-ID: <CAMuHMdXH+CfOMtnPUecfAW9U7+WugbytkG5_P-wu=bk6JygLGg@mail.gmail.com>
Date: Thu, 1 Dec 2022 10:34:25 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>,
dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <robert.foss@...aro.org>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>
Subject: Re: [PATCH v2 3/7] clk: renesas: r8a779g0: Add display related clocks
Hi Tomi,
On Thu, Dec 1, 2022 at 10:06 AM Tomi Valkeinen
<tomi.valkeinen+renesas@...asonboard.com> wrote:
> On 30/11/2022 21:18, Geert Uytterhoeven wrote:
> > On Wed, Nov 23, 2022 at 8:00 AM Tomi Valkeinen
> > <tomi.valkeinen+renesas@...asonboard.com> wrote:
> >> Add clocks related to display which are needed to get the DSI output
> >> working.
> >>
> >> Extracted from Renesas BSP tree.
> >>
> >> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
> >> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
> >> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> > Not that all of this matters a lot: all of these parents are always-on,
> > and I think "dis0" is the only clock where we care about the actual
> > clock rate?
>
> No, of the clocks added above, in the drivers we only care about the
> dsiref rate. That's used for the DSI PLL, and that PLL is used as the
> DU's pclk.
IC. As the DU node has only a single clocks property, I thought that
clock is used to derive the pixel clock from.
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
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