Re: [PATCH] dt-bindings: cpufreq: cpufreq-qcom-hw: Convert to YAML bindings

[Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>]

On Wed, Oct 07, 2020 at 10:53:52AM -0500, Rob Herring wrote:
> On Tue, Oct 06, 2020 at 03:20:47PM +0530, Manivannan Sadhasivam wrote:
> > Convert Qualcomm cpufreq devicetree binding to YAML.
> > 
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> > ---
> >  .../bindings/cpufreq/cpufreq-qcom-hw.txt      | 172 --------------
> >  .../bindings/cpufreq/cpufreq-qcom-hw.yaml     | 212 ++++++++++++++++++
> >  2 files changed, 212 insertions(+), 172 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.txt
> >  create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
> 
> > diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
> > new file mode 100644
> > index 000000000000..a11c69a29b5d
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml
> > @@ -0,0 +1,212 @@

[...]

> > +
> > +  '#freq-domain-cells':
> > +    const: 1
> > +
> > +  qcom,freq-domain:
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    maxItems: 1
> > +    description:
> > +      Devices supporting freq-domain must set their "qcom,freq-domain"
> > +      property with phandle to a cpufreq_hw followed by the Domain ID(0/1)
> > +      in the CPU DT node.
> 
> This doesn't belong here as it goes in cpu nodes. You're going to need 
> to define a QCom cpu schema that defines this.
> 

Okay. It was there in the original binding so I just kept it. Will remove it
in next iteration.

Thanks,
Mani

> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - reg-names
> > +  - clocks
> > +  - clock-names
> > +  - '#freq-domain-cells'
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/qcom,gcc-sdm845.h>
> > +    #include <dt-bindings/clock/qcom,rpmh.h>
> > +
> > +    // Example 1: Dual-cluster, Quad-core per cluster. CPUs within a cluster
> > +    // switch DCVS state together.
> > +    cpus {
> > +      #address-cells = <2>;
> > +      #size-cells = <0>;
> > +
> > +      CPU0: cpu@0 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x0>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_0>;
> > +        qcom,freq-domain = <&cpufreq_hw 0>;
> > +        L2_0: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +          L3_0: l3-cache {
> > +            compatible = "cache";
> > +          };
> > +        };
> > +      };
> > +
> > +      CPU1: cpu@100 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x100>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_100>;
> > +        qcom,freq-domain = <&cpufreq_hw 0>;
> > +        L2_100: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU2: cpu@200 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x200>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_200>;
> > +        qcom,freq-domain = <&cpufreq_hw 0>;
> > +        L2_200: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU3: cpu@300 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x300>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_300>;
> > +        qcom,freq-domain = <&cpufreq_hw 0>;
> > +        L2_300: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU4: cpu@400 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x400>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_400>;
> > +        qcom,freq-domain = <&cpufreq_hw 1>;
> > +        L2_400: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU5: cpu@500 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x500>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_500>;
> > +        qcom,freq-domain = <&cpufreq_hw 1>;
> > +        L2_500: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU6: cpu@600 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x600>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_600>;
> > +        qcom,freq-domain = <&cpufreq_hw 1>;
> > +        L2_600: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +
> > +      CPU7: cpu@700 {
> > +        device_type = "cpu";
> > +        compatible = "qcom,kryo385";
> > +        reg = <0x0 0x700>;
> > +        enable-method = "psci";
> > +        next-level-cache = <&L2_700>;
> > +        qcom,freq-domain = <&cpufreq_hw 1>;
> > +        L2_700: l2-cache {
> > +          compatible = "cache";
> > +          next-level-cache = <&L3_0>;
> > +        };
> > +      };
> > +    };
> > +
> > +    soc {
> > +      #address-cells = <1>;
> > +      #size-cells = <1>;
> > +
> > +      cpufreq@17d43000 {
> > +        compatible = "qcom,cpufreq-hw";
> > +        reg = <0x17d43000 0x1400>, <0x17d45800 0x1400>;
> > +        reg-names = "freq-domain0", "freq-domain1";
> > +
> > +        clocks = <&rpmhcc RPMH_CXO_CLK>, <&gcc GPLL0>;
> > +        clock-names = "xo", "alternate";
> > +
> > +        #freq-domain-cells = <1>;
> > +      };
> > +    };
> > +...
> > -- 
> > 2.17.1
> >