Re: [PATCH v9,2/7] dt-bindings: thermal: Add dt-binding document for LVTS thermal controllers

[Krzysztof Kozlowski]

On 17/08/2022 11:07, bchihi@xxxxxxxxxxxx wrote:
> From: Alexandre Bailon <abailon@xxxxxxxxxxxx>
> 
> Add dt-binding document for mt8192 and mt8195 LVTS thermal controllers.

Rebase your patchset on decent kernel tree. You seem to use something a
bit old.

> 
> Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
> Co-developed-by: Balsam CHIHI <bchihi@xxxxxxxxxxxx>
> Signed-off-by: Balsam CHIHI <bchihi@xxxxxxxxxxxx>
> ---
>  .../thermal/mediatek,lvts-thermal.yaml        | 152 ++++++++++++++++++
>  1 file changed, 152 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> 
> diff --git a/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> new file mode 100644
> index 000000000000..31d9e220513a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> @@ -0,0 +1,152 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/mediatek,lvts-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek SoC LVTS thermal controller
> +
> +maintainers:
> +  - Yu-Chia Chang <ethan.chang@xxxxxxxxxxxx>
> +  - Ben Tseng <ben.tseng@xxxxxxxxxxxx>
> +
> +description: |
> +  LVTS (Low Voltage Thermal Sensor).
> +  The architecture will be first used on mt8192 and mt8195.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8192-lvts-ap
> +      - mediatek,mt8192-lvts-mcu
> +      - mediatek,mt8195-lvts-ap
> +      - mediatek,mt8195-lvts-mcu
> +
> +  "#thermal-sensor-cells":
> +    const: 1
> +
> +  reg:
> +    maxItems: 1
> +    description: LVTS instance registers.
> +
> +  interrupts:
> +    maxItems: 1
> +    description: LVTS instance interrupts.
> +
> +  clocks:
> +    maxItems: 1
> +    description: LVTS instance clock.

Skip all these three descriptions. They are obvious.

> +
> +  resets:
> +    maxItems: 1
> +    description: |
> +      LVTS instance SW reset for HW AP/MCU domain to clean temporary data
> +      on HW initialization/resume.
> +
> +  nvmem-cells:
> +    minItems: 1
> +    maxItems: 2
> +    description: Calibration efuse data for LVTS
> +
> +  nvmem-cell-names:
> +    minItems: 1
> +    maxItems: 2
> +    description: Calibration efuse cell names for LVTS
> +
> +allOf:
> +  - $ref: thermal-sensor.yaml#
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - mediatek,mt8192-lvts-ap
> +              - mediatek,mt8192-lvts-mcu
> +    then:
> +      properties:
> +        nvmem-cells:
> +          items:
> +            - description: Calibration efuse data for LVTS
> +
> +        nvmem-cell-names:
> +          items:
> +            - const: lvts_calib_data1
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - mediatek,mt8195-lvts-ap
> +              - mediatek,mt8195-lvts-mcu
> +    then:
> +      properties:
> +        nvmem-cells:
> +          items:
> +            - description: Calibration efuse data 1 for LVTS
> +            - description: Calibration efuse data 2 for LVTS
> +
> +        nvmem-cell-names:
> +          items:
> +            - const: lvts_calib_data1
> +            - const: lvts_calib_data2
> +
> +required:
> +  - compatible
> +  - '#thermal-sensor-cells'

Use consistent quotes: either ' or "

> +  - reg
> +  - interrupts
> +  - clocks
> +  - resets
> +  - nvmem-cells
> +  - nvmem-cell-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/mt8192-clk.h>
> +    #include <dt-bindings/reset/mt8192-resets.h>
> +
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      lvts_ap: thermal-sensor@1100b000 {
> +        compatible = "mediatek,mt8192-lvts-ap";
> +        #thermal-sensor-cells = <1>;
> +        reg = <0 0x1100b000 0 0x1000>;

Convention is: compatible, then reg, then the rest of properties

> +        interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH 0>;
> +        clocks = <&infracfg CLK_INFRA_THERM>;
> +        resets = <&infracfg MT8192_INFRA_RST0_THERM_CTRL_SWRST>;
> +        nvmem-cells = <&lvts_e_data1>;
> +        nvmem-cell-names = "lvts_calib_data1";
> +      };
> +
> +      lvts_mcu: thermal-sensor@11278000 {
> +        compatible = "mediatek,mt8192-lvts-mcu";
> +        #thermal-sensor-cells = <1>;
> +        reg = <0 0x11278000 0 0x1000>;
> +        interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH 0>;
> +        clocks = <&infracfg CLK_INFRA_THERM>;
> +        resets = <&infracfg MT8192_INFRA_RST4_THERM_CTRL_MCU_SWRST>;
> +        nvmem-cells = <&lvts_e_data1>;
> +        nvmem-cell-names = "lvts_calib_data1";
> +      };
> +    };

This part is the same as previous, so just skip it or replace with an
example which is different somehow.

Best regards,
Krzysztof