linux-kernel - Re: [PATCH 4/6] dt-bindings: soc: qcom: convert non-smd RPM bindings to dt-schema

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Date:   Thu, 6 Oct 2022 14:53:37 -0500
From:   Rob Herring <robh@...nel.org>
To:     Neil Armstrong <neil.armstrong@...aro.org>
Cc:     Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Andy Gross <agross@...nel.org>, Lee Jones <lee@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 4/6] dt-bindings: soc: qcom: convert non-smd RPM bindings
 to dt-schema

On Thu, Oct 06, 2022 at 09:58:01AM +0000, Neil Armstrong wrote:
> Convert the non-SMD RPM node bindings to dt-schema, the regulators subnode
> refers to regulators,yaml until we have the proper bindings.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  Documentation/devicetree/bindings/mfd/qcom-rpm.txt | 39 +-----------
>  .../devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml | 73 ++++++++++++++++++++++
>  2 files changed, 74 insertions(+), 38 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..d416950189d1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,ipc-rpm.yaml
> @@ -0,0 +1,73 @@
> +# 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: |
> +  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
> +
> +  interrupts:
> +    minItems: 3

maxItems: 3

(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.
> +
> +  regulators:
> +    type: object
> +    $ref: /schemas/regulator/regulator.yaml#

regulator.yaml applies to a single regulator, but 'regulators' sounds 
like a container node with multiple regulators.

Would be good if the example showed...

> +
> +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>
> +
> +    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";
> +    };
> 
> -- 
> b4 0.10.1
>