linux-kernel - Re: [PATCH 2/9] dt-bindings: regulator: Add document for MediaTek MT6380 regulator

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Date:   Thu, 8 Jun 2017 17:01:30 -0500
From:   Rob Herring <robh@...nel.org>
To:     sean.wang@...iatek.com
Cc:     matthias.bgg@...il.com, mark.rutland@....com, lgirdwood@...il.com,
        broonie@...nel.org, jamesjj.liao@...iatek.com,
        henryc.chen@...iatek.com, devicetree@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, chen.zhong@...iatek.com,
        chenglin.xu@...iatek.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/9] dt-bindings: regulator: Add document for MediaTek
 MT6380 regulator

On Sat, Jun 03, 2017 at 01:55:43AM +0800, sean.wang@...iatek.com wrote:
> From: Sean Wang <sean.wang@...iatek.com>
> 
> add dt-binding document for MediaTek MT6380 PMIC
> 
> Signed-off-by: Chenglin Xu <chenglin.xu@...iatek.com>
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> ---
>  .../bindings/regulator/mt6380-regulator.txt        | 90 ++++++++++++++++++++++
>  1 file changed, 90 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/mt6380-regulator.txt
> 
> diff --git a/Documentation/devicetree/bindings/regulator/mt6380-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6380-regulator.txt
> new file mode 100644
> index 0000000..9affeab
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/mt6380-regulator.txt
> @@ -0,0 +1,90 @@
> +Mediatek MT6380 Regulator Driver
> +
> +All voltage regulators are defined as subnodes of the regulators node. A list
> +of regulators provided by this controller are defined as subnodes of the
> +PMIC's node. Each regulator is named according to its regulator type,
> +buck_<name> and ldo_<name>. The definition for each of these nodes is defined
> +using the standard binding for regulators at
> +Documentation/devicetree/bindings/regulator/regulator.txt.
> +
> +The valid names for regulators are::
> +BUCK:
> +  buck_vcore1, buck_vcore, buck_vrf
> +LDO:
> +  ldo_vmldo ,ldo_valdo , ldo_vphyldo, ldo_vddrldo, ldo_vtldo

'ldo' twice in every name is redundant.

Use of '_' is discouraged, but if that's what prior PMICs did, it's 
okay.

> +
> +Example:
> +
> +	mt6380regulator: mt6380regulator {

just "regulators {"

> +		compatible = "mediatek,mt6380-regulator";
> +
> +		mt6380_vcpu_reg: buck_vcore1 {
> +			regulator-name = "vcpu";
> +			regulator-min-microvolt = < 600000>;
> +			regulator-max-microvolt = <1393750>;
> +			regulator-ramp-delay = <6250>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_vcore_reg: buck_vcore {
> +			regulator-name = "vcore";
> +			regulator-min-microvolt = <600000>;
> +			regulator-max-microvolt = <1393750>;
> +			regulator-ramp-delay = <6250>;
> +		};
> +
> +		mt6380_vrf_reg: buck_vrf {
> +			regulator-name = "vrf";
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1575000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_vm_reg: ldo_vmldo {
> +			regulator-name = "vmldo";
> +			regulator-min-microvolt = <1050000>;
> +			regulator-max-microvolt = <1400000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_va_reg: ldo_valdo {
> +			regulator-name = "valdo";
> +			regulator-min-microvolt = <2200000>;
> +			regulator-max-microvolt = <3300000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_vphy_reg: ldo_vphyldo {
> +			regulator-name = "vphyldo";
> +			regulator-min-microvolt = <1800000>;
> +			regulator-max-microvolt = <1800000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_vddr_reg: ldo_vddrldo {
> +			regulator-name = "vddr";
> +			regulator-min-microvolt = <1240000>;
> +			regulator-max-microvolt = <1840000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +
> +		mt6380_vt_reg: ldo_vtldo {
> +			regulator-name = "vadc18";
> +			regulator-min-microvolt = <2200000>;
> +			regulator-max-microvolt = <3300000>;
> +			regulator-ramp-delay = <0>;
> +			regulator-always-on;
> +			regulator-boot-on;
> +		};
> +	};
> -- 
> 1.9.1
>