linux-kernel - Re: [PATCH v1 1/2] riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060

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Message-ID: <CAJM55Z8EtUjfjF04jcNwdyPzx3VmEWZs14Fr-9PDiqXcHDOe9Q@mail.gmail.com>
Date:   Thu, 10 Aug 2023 13:31:55 +0200
From:   Emil Renner Berthing <emil.renner.berthing@...onical.com>
To:     William Qiu <william.qiu@...rfivetech.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org,
        Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH v1 1/2] riscv: dts: starfive: enable DCDC1&ALDO4 node in axp15060

On Wed, 9 Aug 2023 at 03:41, William Qiu <william.qiu@...rfivetech.com> wrote:
>
> Enable DCDC1 node for vmmc-supply and enable ALDO4 node for
> vqmmc-supply.
>
> Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
> ---
>  .../starfive/jh7110-starfive-visionfive-2.dtsi   | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> index d2f3b9eb859b..d67e26b9c791 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -165,12 +165,28 @@ axp15060: pmic@36 {
>                 #interrupt-cells = <1>;
>
>                 regulators {
> +                       vcc_3v3: dcdc1 {
> +                               regulator-boot-on;
> +                               regulator-always-on;
> +                               regulator-min-microvolt = <3300000>;
> +                               regulator-max-microvolt = <3300000>;
> +                               regulator-name = "vcc_3v3";
> +                       };
> +
>                         vdd_cpu: dcdc2 {
>                                 regulator-always-on;
>                                 regulator-min-microvolt = <500000>;
>                                 regulator-max-microvolt = <1540000>;
>                                 regulator-name = "vdd-cpu";
>                         };
> +
> +                       emmc_vdd: aldo4 {
> +                               regulator-boot-on;
> +                               regulator-always-on;

Hi William,

Just a question: You mark these regulators as always-on, so they'll
never be shut off even if the device is suspended. Is that because the
mmc driver can't deal with reinitializing the mmc/sd-card if the card
has been shut off while suspended or is there some other reason to
mark them always-on?

> +                               regulator-min-microvolt = <1800000>;
> +                               regulator-max-microvolt = <1800000>;
> +                               regulator-name = "emmc_vdd";
> +                       };
>                 };
>         };
>  };
> --
> 2.34.1
>
>
> _______________________________________________
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> linux-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-riscv

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