linux-kernel - Re: [PATCH 1/4] dt-bindings: regulator: Describe Qualcomm REFGEN regulator

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Date:   Thu, 29 Jun 2023 10:22:06 -0600
From:   Rob Herring <robh@...nel.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Krishna Manikandan <quic_mkrishn@...cinc.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org
Subject: Re: [PATCH 1/4] dt-bindings: regulator: Describe Qualcomm REFGEN
 regulator

On Wed, Jun 28, 2023 at 06:29:45PM +0200, Konrad Dybcio wrote:
> Modern Qualcomm SoCs have a REFGEN (reference voltage generator)
> regulator, providing reference voltage to on-chip IP, like PHYs.
> It's controlled through MMIO and we can toggle it or read its state back.
> 
> Describe it.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
>  .../regulator/qcom,sdm845-refgen-regulator.yaml    | 56 ++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/regulator/qcom,sdm845-refgen-regulator.yaml b/Documentation/devicetree/bindings/regulator/qcom,sdm845-refgen-regulator.yaml
> new file mode 100644
> index 000000000000..19d3eb9db98f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/qcom,sdm845-refgen-regulator.yaml
> @@ -0,0 +1,56 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/qcom,sdm845-refgen-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. REFGEN Regulator
> +
> +maintainers:
> +  - Konrad Dybcio <konradybcio@...nel.org>
> +
> +description: |

Don't need '|'.

> +    The REFGEN (reference voltage renegator) regulator provides reference

renegator?

> +    voltage for on-chip IPs (like PHYs) on some Qualcomm SoCs.
> +
> +allOf:
> +  - $ref: regulator.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - qcom,sc7180-refgen-regulator
> +              - qcom,sc8180x-refgen-regulator
> +              - qcom,sm8150-refgen-regulator
> +          - const: qcom,sdm845-refgen-regulator
> +
> +      - items:
> +          - enum:
> +              - qcom,sc7280-refgen-regulator
> +              - qcom,sc8280xp-refgen-regulator
> +              - qcom,sm6350-refgen-regulator
> +              - qcom,sm6375-refgen-regulator
> +              - qcom,sm8350-refgen-regulator
> +          - const: qcom,sm8250-refgen-regulator
> +
> +      - enum:
> +          - qcom,sdm845-refgen-regulator
> +          - qcom,sm8250-refgen-regulator
> +
> +  reg: true

Need to define how many.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    regulator@...f000 {
> +      compatible = "qcom,sm8250-refgen-regulator";
> +      reg = <0 0x0162f000 0 0x84>;

Default cell size is 1.

> +    };
> +...
> 
> -- 
> 2.41.0
>