linux-kernel - Re: [RFC PATCH v3 1/2] arm64: dts: renesas: ulcb-kf: drop duplicate 3.3v regulators

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Date: Fri, 26 Jan 2024 15:05:05 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc: linux-renesas-soc@...r.kernel.org, 
	Geert Uytterhoeven <geert+renesas@...der.be>, Magnus Damm <magnus.damm@...il.com>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v3 1/2] arm64: dts: renesas: ulcb-kf: drop duplicate
 3.3v regulators

Hi Wolfram,

On Wed, Jan 17, 2024 at 2:18 PM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:
> Schematics say that all these 3.3v sources are driven by "D3.3V". We
> have a regulator for it already in ulcb.dtsi. Use it instead.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> ---
>
> Following a suggestion from Geert[1], let's inherit the 3.3V regulator
> from ulcb.dtsi. I kept the other KF regulators because:

Thanks for the update!

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
i.e. will queue in renesas-devel for v6.9.

> - 'hdmi_1v8' is really derived from d3.3v on the KingFisher board. It is
>   named "T1.8V" in the schematics. Maybe we rename it?
>
> - 'snd_vcc5v' looks like D5V to me. While it seems available on the

Yes, it's D5 (KF) aka D5.0V (ULCB).

>   connectors, it looks unused on the ULCB. So, keep it KingFisher only.
>   But maybe rename it to "reg_5v"?

These two can be updated later.

> [1] https://lore.kernel.org/r/CAMuHMdXbpBeKNL6QC_vYTrocf7xPcvUBQmoV9vboqVt_ciio+g@mail.gmail.com

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

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