Re: [PATCH 2/5] dt-bindings: thermal: qcom: Add MBG thermal monitor bindings

[Krzysztof Kozlowski <krzk@kernel.org>]

On 12/07/2024 14:43, Satya Priya Kakitapalli wrote:
> Add bindings support for the MBG Temp alarm peripheral found on
> pm8775 pmics.
> 
> Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
> ---
>  .../bindings/thermal/qcom-spmi-mbg-tm.yaml         | 63 ++++++++++++++++++++++

A nit, subject: drop second/last, redundant "bindings". The
"dt-bindings" prefix is already stating that these are bindings.
See also:
https://elixir.bootlin.com/linux/v6.7-rc8/source/Documentation/devicetree/bindings/submitting-patches.rst#L18

>  1 file changed, 63 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml b/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml
> new file mode 100644
> index 000000000000..9b6d1bc34a11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-mbg-tm.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/qcom-spmi-mbg-tm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. SPMI PMIC MBG Thermal Monitoring
> +
> +maintainers:
> +  - Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
> +
> +description: |

Do not need '|' unless you need to preserve formatting.

> +  Qualcomm's thermal driver for the MBG thermal monitoring device.

Driver as Linux driver? Instead please describe the hardware.

Missing $ref to thermal-sensor.

> +
> +properties:
> +  compatible:
> +    const: qcom,spmi-mbg-tm

Instead use SoC specific compatible.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  io-channels:

Missing constraints. Use items with description.
> +    description:
> +      IIO channel specifier for the ADC channel, which reports

And drop redundant part - "IIO channel specifier for". This cannot be
anything else.

> +      chip die temperature.
> +
> +  io-channel-names:
> +    const: thermal
> +
> +  "#thermal-sensor-cells":
> +    const: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - io-channels
> +  - io-channel-names
> +  - "#thermal-sensor-cells"

And this won't be needed.

> +
> +additionalProperties: false

unevaluatedProperties instead

> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/iio/adc/qcom,spmi-adc5-gen3-pm8775.h>
> +    spmi_bus {

Eh... No. Is this really directly on SPMI bus? Anyway, use correct node
names.

> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      pm8775_sail_1_tz: qcom,mbg-tm@d700 {

Oh no, please don't bring downstream crap.

Do you see any node called like this?

Also, drop unused label.

> +        compatible = "qcom,spmi-mbg-tm";
> +        reg = <0xd700>;
> +        interrupts = <0x1 0xd7 0x0 IRQ_TYPE_EDGE_RISING>;

This suggests it is not on SPMI bus but part of PMIC. Why doing
something entirely different then entire Linux kernel? Do not use
downstream as template, that's a no go.

Best regards,
Krzysztof