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[209.85.222.173]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-79355ce7048sm10524916d6.69.2025.09.18.02.34.03 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 18 Sep 2025 02:34:03 -0700 (PDT) Received: by mail-qk1-f173.google.com with SMTP id af79cd13be357-80e3612e1a7so126832985a.0 for ; Thu, 18 Sep 2025 02:34:03 -0700 (PDT) X-Forwarded-Encrypted: i=1; AJvYcCU7KYqdRenXwv85QW3HsQJhuong6nIPOPVc7sx6tuBz6FlRqon1eDa/9KdfECUIIXmiR8KdW7IUCD5J/VwVenV9@vger.kernel.org X-Received: by 2002:a05:6102:80a6:b0:51e:92cc:6e6a with SMTP id ada2fe7eead31-56d6d57bf75mr1452834137.33.1758187611708; Thu, 18 Sep 2025 02:26:51 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <87ms6snut0.wl-kuninori.morimoto.gx@renesas.com> <87jz1wnunm.wl-kuninori.morimoto.gx@renesas.com> In-Reply-To: <87jz1wnunm.wl-kuninori.morimoto.gx@renesas.com> From: Geert Uytterhoeven Date: Thu, 18 Sep 2025 11:26:40 +0200 X-Gmail-Original-Message-ID: X-Gm-Features: AS18NWDTdMprA4ImYjVf-zjtYmKdsmDO9RIvez5aKcVZCW3WJ100X4TbNjepaRg Message-ID: Subject: Re: [PATCH v5 2/7] dt-bindings: serial: sh-sci: don't required "power-domain" To: Kuninori Morimoto Cc: "Liang, Kan" , Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Catalin Marinas , Conor Dooley , Douglas Anderson , Geert Uytterhoeven , Ian Rogers , Ingo Molnar , James Clark , Jiri Olsa , John Garry , Krzysztof Kozlowski , Leo Yan , Lorenzo Pieralisi , Mark Rutland , Mike Leach , Namhyung Kim , Oliver Upton , Peter Zijlstra , Rob Herring , Shameer Kolothum , Will Deacon , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Marc Zyngier Content-Type: text/plain; charset="UTF-8" Hi Morimoto-san, On Thu, 18 Sept 2025 at 08:26, Kuninori Morimoto wrote: > {H}SCIF is in the always-on power area. "power-domain" property is not > mandatory. Remove it. > > Signed-off-by: Kuninori Morimoto Thanks for your patch! > I'm not sure this is acceptable patch. This is optional patch. (H)SCIF is indeed part of the always-on power area. However, like for many other modules, its power management is handled similarly through a clock/module controller. Hence it falls under the PM Domain abstraction, and the power-domains property is justified. What this power-domains property will point to on R-ar X5H is a different question, as there are no DT bindings and no driver for the clock/module controller yet... > --- a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml > +++ b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml > @@ -116,7 +116,6 @@ required: > - interrupts > - clocks > - clock-names > - - power-domains > > if: > properties: > --- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml > +++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml > @@ -168,7 +168,6 @@ required: > - interrupts > - clocks > - clock-names > - - power-domains > > allOf: > - $ref: serial.yaml# Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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