Re: [PATCH v2 3/8] dt-bindings: display/msm: add support for the display on SM8450

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 02/11/2022 19:13, Dmitry Baryshkov wrote:
> Add DPU and MDSS schemas to describe MDSS and DPU blocks on the Qualcomm
> SM8450 platform.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
>  .../bindings/display/msm/qcom,sm8450-dpu.yaml | 132 +++++++
>  .../display/msm/qcom,sm8450-mdss.yaml         | 349 ++++++++++++++++++
>  2 files changed, 481 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/msm/qcom,sm8450-dpu.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-dpu.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-dpu.yaml
> new file mode 100644
> index 000000000000..b8c508c50bc5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-dpu.yaml
> @@ -0,0 +1,132 @@
> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/msm/qcom,sm8450-dpu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SM8450 Display DPU
> +
> +maintainers:
> +  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> +
> +$ref: /schemas/display/msm/dpu-common.yaml#

There is no such file and I could not fine any dependency mentioned in
cover letter. I guess you miss link to your refactor series?

This also means bot won't be able to test it...

> +
> +properties:
> +  compatible:
> +    const: qcom,sm8450-dpu
> +
> +  reg:
> +    items:
> +      - description: Address offset and size for mdp register set
> +      - description: Address offset and size for vbif register set
> +
> +  reg-names:
> +    items:
> +      - const: mdp
> +      - const: vbif
> +
> +  clocks:
> +    items:
> +      - description: Display hf axi clock
> +      - description: Display sf axi clock
> +      - description: Display ahb clock
> +      - description: Display lut clock
> +      - description: Display core clock
> +      - description: Display vsync clock

Drop "clock", less typing.

> +
> +  clock-names:
> +    items:
> +      - const: bus
> +      - const: nrt_bus
> +      - const: iface
> +      - const: lut
> +      - const: core
> +      - const: vsync
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,sm8450-dispcc.h>
> +    #include <dt-bindings/clock/qcom,gcc-sm8450.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interconnect/qcom,sm8450.h>
> +    #include <dt-bindings/power/qcom-rpmpd.h>
> +
> +    display-controller@ae01000 {
> +        compatible = "qcom,sm8450-dpu";
> +        reg = <0x0ae01000 0x8f000>,
> +              <0x0aeb0000 0x2008>;
> +        reg-names = "mdp", "vbif";
> +
> +        clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> +                <&gcc GCC_DISP_SF_AXI_CLK>,
> +                <&dispcc DISP_CC_MDSS_AHB_CLK>,
> +                <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
> +                <&dispcc DISP_CC_MDSS_MDP_CLK>,
> +                <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> +        clock-names = "bus",
> +                      "nrt_bus",
> +                      "iface",
> +                      "lut",
> +                      "core",
> +                      "vsync";
> +
> +        assigned-clocks = <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> +        assigned-clock-rates = <19200000>;
> +
> +        operating-points-v2 = <&mdp_opp_table>;
> +        power-domains = <&rpmhpd SM8450_MMCX>;
> +
> +        interrupt-parent = <&mdss>;
> +        interrupts = <0>;
> +
> +        ports {
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            port@0 {
> +                reg = <0>;
> +                dpu_intf1_out: endpoint {
> +                    remote-endpoint = <&dsi0_in>;
> +                };
> +            };
> +
> +            port@1 {
> +                reg = <1>;
> +                dpu_intf2_out: endpoint {
> +                    remote-endpoint = <&dsi1_in>;
> +                };
> +            };
> +        };
> +
> +        mdp_opp_table: opp-table {
> +            compatible = "operating-points-v2";
> +
> +            opp-172000000{
> +                opp-hz = /bits/ 64 <172000000>;
> +                required-opps = <&rpmhpd_opp_low_svs_d1>;
> +            };
> +
> +            opp-200000000 {
> +                opp-hz = /bits/ 64 <200000000>;
> +                required-opps = <&rpmhpd_opp_low_svs>;
> +            };
> +
> +            opp-325000000 {
> +                opp-hz = /bits/ 64 <325000000>;
> +                required-opps = <&rpmhpd_opp_svs>;
> +            };
> +
> +            opp-375000000 {
> +                opp-hz = /bits/ 64 <375000000>;
> +                required-opps = <&rpmhpd_opp_svs_l1>;
> +            };
> +
> +            opp-500000000 {
> +                opp-hz = /bits/ 64 <500000000>;
> +                required-opps = <&rpmhpd_opp_nom>;
> +            };
> +        };
> +    };
> +...
> diff --git a/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
> new file mode 100644
> index 000000000000..05c606e6ada3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/msm/qcom,sm8450-mdss.yaml
> @@ -0,0 +1,349 @@
> +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/msm/qcom,sm8450-mdss.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm SM8450 Display MDSS
> +
> +maintainers:
> +  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> +
> +description:
> +  Device tree bindings for MSM Mobile Display Subsystem(MDSS) that encapsulates

Drop "Device tree bindings for" and rewrite the sentence (e.g. drop "that").

> +  sub-blocks like DPU display controller, DSI and DP interfaces etc. Device tree
> +  bindings of MDSS are mentioned for SM8450 target.

Drop last sentence.

> +
> +$ref: /schemas/display/msm/mdss-common.yaml#
> +
> +properties:
> +  compatible:
> +    items:

Drop items.

> +      - const: qcom,sm8450-mdss

> +
> +  clocks:
> +    items:
> +      - description: Display AHB clock from gcc
> +      - description: Display hf axi clock
> +      - description: Display sf axi clock
> +      - description: Display core clock

Drop trailing "clocks" (the first "AHB clock" is ok)

> +
> +  clock-names:
> +    items:
> +      - const: iface
> +      - const: bus
> +      - const: nrt_bus
> +      - const: core
> +
> +  iommus:
> +    maxItems: 1
> +
> +  interconnects:
> +    maxItems: 2
> +
> +  interconnect-names:
> +    maxItems: 2

You need specific names here.

> +
> +patternProperties:
> +  "^display-controller@[0-9a-f]+$":
> +    type: object
> +    properties:
> +      compatible:
> +        const: qcom,sm8450-dpu
> +
> +  "^dsi@[0-9a-f]+$":
> +    type: object
> +    properties:
> +      compatible:
> +        const: qcom,mdss-dsi-ctrl
> +
> +  "^phy@[0-9a-f]+$":
> +    type: object
> +    properties:
> +      compatible:
> +        const: qcom,dsi-phy-5nm-8450
> +
> +unevaluatedProperties: false

Best regards,
Krzysztof