linux-kernel - Re: [PATCH v1 4/4] riscv: dts: starfive: add power controller node

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Date:   Wed, 30 Nov 2022 15:38:27 +0100
From:   Emil Renner Berthing <emil.renner.berthing@...onical.com>
To:     Walker Chen <walker.chen@...rfivetech.com>
Cc:     linux-riscv@...ts.infradead.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 4/4] riscv: dts: starfive: add power controller node

On Wed, 23 Nov 2022 at 03:12, Walker Chen <walker.chen@...rfivetech.com> wrote:
>
> On 2022/11/19 2:36, Emil Renner Berthing wrote:
> > On Fri, 18 Nov 2022 at 14:35, Walker Chen <walker.chen@...rfivetech.com> wrote:
> >>
> >> This adds the power controller node for the Starfive JH7110 SoC.
> >> The pmu needs to be used by other modules such as ISP, VPU, etc.
> >>
> >> Signed-off-by: Walker Chen <walker.chen@...rfivetech.com>
> >
> > Hi Walker,
> >
> > You called the driver jh71xx which suggests it also applies to the
> > jh7100. Are you missing a node in the jh7100 device tree?
>
> No, there is no power domain controller on the jh7100. Our next generation of chips jh7120 will
> still use this power management unit, so here this driver name is called jh71xx_pmu.c or changed
> to jh71xx_power.c , do you think such a name is appropriate ?
> Your reply will be highly appreciated!

I see. In that case jh71xx seems appropriate, thanks.

> >
> >> ---
> >>  arch/riscv/boot/dts/starfive/jh7110.dtsi | 7 +++++++
> >>  1 file changed, 7 insertions(+)
> >>
> >> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> >> index c22e8f1d2640..fa7b60b82d71 100644
> >> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
> >> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> >> @@ -356,6 +356,13 @@
> >>                         #gpio-cells = <2>;
> >>                 };
> >>
> >> +               pwrc: power-controller@...30000 {
> >> +                       compatible = "starfive,jh7110-pmu";
> >> +                       reg = <0x0 0x17030000 0x0 0x10000>;
> >> +                       interrupts = <111>;
> >> +                       #power-domain-cells = <1>;
> >> +               };
> >> +
> >>                 uart0: serial@...00000 {
> >>                         compatible = "snps,dw-apb-uart";
> >>                         reg = <0x0 0x10000000 0x0 0x10000>;
> >> --
> >> 2.17.1
> >>
> >>
> >> _______________________________________________
> >> linux-riscv mailing list
> >> linux-riscv@...ts.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/linux-riscv
>

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