Re: [PATCH v3 03/29] media: iris: add platform driver for iris video device

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On 9/5/2024 3:41 PM, Dmitry Baryshkov wrote:
> On Thu, Sep 05, 2024 at 11:45:25AM GMT, Dikshita Agarwal wrote:
>>
>>
>> On 9/5/2024 11:42 AM, Dikshita Agarwal wrote:
>>>
>>>
>>> On 8/29/2024 2:43 PM, Dmitry Baryshkov wrote:
>>>> On Tue, Aug 27, 2024 at 03:08:03PM GMT, Bryan O'Donoghue wrote:
>>>>> On 27/08/2024 11:05, Dikshita Agarwal via B4 Relay wrote:
>>>>>> +static const struct of_device_id iris_dt_match[] = {
>>>>>> +	{ .compatible = "qcom,sm8550-iris", },
>>>>>> +	{ .compatible = "qcom,sm8250-venus", },
>>>>>> +	{ },
>>>>>> +};
>>>>>> +MODULE_DEVICE_TABLE(of, iris_dt_match);
>>>>>
>>>>> The enabling patch for the compat strings should come last - if its first
>>>>> then the time between the compat add and the last patch is a dead zone where
>>>>> things are bound to break on a booting board.
>>>>
>>>> But then it's impossible to test the driver in the interim state.
>>>> Moreover enabling it at the end only makes it hard to follow platform
>>>> data changes. What about adding sm8550 at this point and adding sm8250
>>>> at the end? Or enabling qcom,sm8550-iris and the fake qcom,sm8250-iris
>>>> now (and clearly documenting it as fake) and as the last patch change it
>>>> to qcom,sm8250-venus.
>>>
>>> Sure, we will add qcom,sm8250-iris at this point so that it enables the
>>> testing of the driver, and will add one patch at the last to add
>>> qcom,sm8250-venus.
>> Sorry fixing the typos. what I meant was,
>> we will add qcom,sm8550-iris at this point so that it enables the
>> testing of the driver, and will add one patch at the last to add
>> qcom,sm8250-venus.
> 
> I hope you meant 'to change qcom,sm8250-iris to qcom,sm8250-venus'. Also
> please clearly document that qcom,sm8250-iris is a temporary thing just
> to facilitate documentation and testing of the driver to be removed as a
> last patch.
> 
I was agreeing to follow this suggestion of yours
"What about adding sm8550 at this point and adding sm8250
at the end?"
Where we will add sm8550(qcom,sm8550-iris) first so driver can be tested on
sm8550 and add sm8250(qcom,sm8250-venus) in the last patch.
I think Bryan also agreed to the same.
>>>
>>> Thanks,
>>> Dikshita
>>>>
>>>
> 




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