linux-kernel - Re: [PATCH v2 5/5] dt-bindings: soc: qcom: convert non-smd RPM bindings to dt-schema

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Date:   Mon, 17 Oct 2022 09:51:46 -0500
From:   Rob Herring <robh@...nel.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>
Cc:     Lee Jones <lee@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Andy Gross <agross@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v2 5/5] dt-bindings: soc: qcom: convert non-smd RPM
 bindings to dt-schema

On Mon, Oct 17, 2022 at 12:23:09PM +0200, Neil Armstrong wrote:
> Convert the non-SMD RPM node bindings to dt-schema, the old txt bindings
> are now removed since all bindings were converted.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  Documentation/devicetree/bindings/mfd/qcom-rpm.txt | 283 ---------------------
>  .../devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml |  99 +++++++
>  2 files changed, 99 insertions(+), 283 deletions(-)


> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml
> new file mode 100644
> index 000000000000..4e9df94ecd44
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml
> @@ -0,0 +1,99 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/soc/qcom/qcom,ipc-rpm.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Qualcomm Resource Power Manager (RPM) over IPC
> +
> +description: |

Don't need '|' if no formatting to preserve.

> +  This driver is used to interface with the Resource Power Manager (RPM) found
> +  in various Qualcomm platforms. The RPM allows each component in the system
> +  to vote for state of the system resources, such as clocks, regulators and bus
> +  frequencies.
> +
> +maintainers:
> +  - Bjorn Andersson <andersson@...nel.org>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - qcom,rpm-apq8064
> +      - qcom,rpm-msm8660
> +      - qcom,rpm-msm8960
> +      - qcom,rpm-ipq8064
> +      - qcom,rpm-mdm9615
> +
> +  reg: true

Need to define how many entries.

> +
> +  interrupts:
> +    minItems: 3

maxItems instead.

> +
> +  interrupt-names:
> +    items:
> +      - const: ack
> +      - const: err
> +      - const: wakeup
> +
> +  qcom,ipc:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    items:
> +      - items:
> +          - description: phandle to a syscon node representing the APCS registers
> +          - description: u32 representing offset to the register within the syscon
> +          - description: u32 representing the ipc bit within the register
> +    description:
> +      Three entries specifying the outgoing ipc bit used for signaling the RPM.
> +
> +patternProperties:
> +  "(regulators|-regulators)$":

Can be simplified to this:

'-?regulators$'

However, as there is no constraint as to what comes before the r or -, 
the '-?' doesn't do anything. Either drop it or try to define the 
preceeding part. Perhaps '^([a-z]+-)?regulators$' is what you wanted if 
just 'regulators' is one case?


> +    type: object
> +    $ref: /schemas/regulator/qcom,ipc-rpm-regulator.yaml#
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-names
> +  - qcom,ipc
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/mfd/qcom-rpm.h>
> +
> +    rpm@...000 {
> +      compatible = "qcom,rpm-msm8960";
> +      reg = <0x108000 0x1000>;
> +      qcom,ipc = <&apcs 0x8 2>;
> +
> +      interrupts = <GIC_SPI 19 IRQ_TYPE_NONE>, <GIC_SPI 21 IRQ_TYPE_NONE>, <GIC_SPI 22 IRQ_TYPE_NONE>;
> +      interrupt-names = "ack", "err", "wakeup";
> +
> +      regulators {
> +        compatible = "qcom,rpm-pm8921-regulators";
> +        vdd_l1_l2_l12_l18-supply = <&pm8921_s4>;
> +
> +        s1 {
> +          regulator-min-microvolt = <1225000>;
> +          regulator-max-microvolt = <1225000>;
> +
> +          bias-pull-down;
> +
> +          qcom,switch-mode-frequency = <3200000>;
> +        };
> +
> +        pm8921_s4: s4 {
> +          regulator-min-microvolt = <1800000>;
> +          regulator-max-microvolt = <1800000>;
> +
> +          qcom,switch-mode-frequency = <1600000>;
> +          bias-pull-down;
> +
> +          qcom,force-mode = <QCOM_RPM_FORCE_MODE_AUTO>;
> +        };
> +      };
> +    };
> 
> -- 
> b4 0.10.1
>