Re: [PATCH 2/6] dt-bindings: ptp: Document TSCSS hardware on Qualcomm QDU1000 SoC

[Krzysztof Kozlowski]

On 27/07/2026 16:10, Imran Shaik wrote:
> Add Devicetree bindings for the Timestamp Counter Subsystem (TSCSS) found
> on Qualcomm QDU1000 SoC.
> 
> TSCSS is a time synchronization subsystem composed of two main blocks:
> Timestamp Counter (TSC) and Event Timestamp Unit (ETU). The TSC block
> provides a continuously running counter used for timekeeping, while the
> ETU captures timestamps for external hardware event triggers.
> 
> Co-developed-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
> Signed-off-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
> Signed-off-by: Imran Shaik <imran.shaik@xxxxxxxxxxxxxxxx>
> ---
>  .../bindings/ptp/qcom,qdu1000-tscss.yaml           | 187 +++++++++++++++++++++
>  1 file changed, 187 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/ptp/qcom,qdu1000-tscss.yaml b/Documentation/devicetree/bindings/ptp/qcom,qdu1000-tscss.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..39387614ef8939b7840df2f0d5640b9e142fb4e5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ptp/qcom,qdu1000-tscss.yaml
> @@ -0,0 +1,187 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/ptp/qcom,qdu1000-tscss.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Timestamp Counter Subsystem (TSCSS) on Qualcomm QDU1000 SoC
> +
> +maintainers:
> +  - Imran Shaik <imran.shaik@xxxxxxxxxxxxxxxx>
> +  - Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
> +
> +description: |
> +  Qualcomm TSCSS is a time synchronization subsystem composed of two main
> +  blocks - the Time Stamp Counter (TSC) and the Event Timestamp Unit (ETU).
> +
> +  The TSC block is a timestamp generator that maintains a running counter used
> +  for system timekeeping, and is functional with just the AHB and counter
> +  clocks.
> +  The ETU block is optional and captures TSC timestamps for external
> +  hardware events, each ETU slice binding a slice identifier to an external
> +  event selector. Support for the ETU block requires the additional ETU
> +  clock along with the per slice interrupt and slice subnodes.
> +
> +properties:
> +  compatible:
> +    const: qcom,qdu1000-tscss

Why do you create a new file with exactly the same binding?

Anyway, all comments apply.

Best regards,
Krzysztof