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

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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.

> > 
> > Thanks,
> > Dikshita
> >>
> > 

-- 
With best wishes
Dmitry




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