Re: [PATCH v2 2/7] dt-bindings: soundwire: qcom: add 16-bit sample interval

From: Krzysztof Kozlowski
Date: Wed Apr 12 2023 - 12:16:38 EST


On 12/04/2023 17:28, Srinivas Kandagatla wrote:
>
>
> On 03/04/2023 14:24, Krzysztof Kozlowski wrote:
>> The port sample interval was always 16-bit, split into low and high
>> bytes. This split was unnecessary, although harmless for older devices
>> because all of them used only lower byte (so values < 0xff). With
>> support for Soundwire controller on Qualcomm SM8550 and its devices,
>> both bytes will be used, thus add a new 'qcom,ports-sinterval' property
>> to allow 16-bit sample intervals.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
>> ---
>> .../bindings/soundwire/qcom,soundwire.yaml | 22 +++++++++++++++++--
>> 1 file changed, 20 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>> index c283c594fb5c..883b8be9be1b 100644
>> --- a/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>> +++ b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>> @@ -86,7 +86,7 @@ properties:
>> qcom,ports-sinterval-low:
>> $ref: /schemas/types.yaml#/definitions/uint8-array
>> description:
>> - Sample interval low of each data port.
>> + Sample interval (only lowest byte) of each data port.
>> Out ports followed by In ports. Used for Sample Interval calculation.
>> Value of 0xff indicates that this option is not implemented
>> or applicable for the respective data port.
>> @@ -94,6 +94,19 @@ properties:
>> minItems: 3
>> maxItems: 16
>>
>> + qcom,ports-sinterval:
>> + $ref: /schemas/types.yaml#/definitions/uint32-array
>
> Should this not be ref: /schemas/types.yaml#/definitions/uint16-array ?

Same answer as for Rob:

Because I am afraid it will grow in next version to 24 or 32 bits. I can
change easily maximum, but if I put here uint16-array, all DTS will have
/bytes 16/ annotation.

Best regards,
Krzysztof