Re: [PATCH v2 2/4] ASoC: dt-bindings: realtek,rt5682s: Add AVDD and MICVDD supplies

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On Tue, Oct 25, 2022 at 12:06:23PM +0200, AngeloGioacchino Del Regno wrote:
> Il 25/10/22 00:00, Nícolas F. R. A. Prado ha scritto:
> > The rt5682s codec can have two supplies: AVDD and MICVDD. They are
> > already used by sc7180-trogdor-kingoftown.dtsi, so document them in the
> > binding.
> > 
> > Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
> > 
> 
> I also don't like these uppercase supply names... I wonder if it's worth changing
> the driver to get "avdd" *or* "AVDD" (so, if "avdd" fails -> backwards compat)...
> 
> ...this way, we can change the devicetree to use the lowercase names without
> breaking abi.
> 
> Of course, this commit would need to be changed to document only the lowercase
> supply names.
> 
> Driver-wise, we have a rt5682s_supply_names array... we could do something like:
> 
> static const char *rt5682s_supply_names_legacy[RT5682S_NUM_SUPPLIES] = {
> 	[RT5682S_SUPPLY_AVDD] = "AVDD",
> 	[RT5682S_SUPPLY_MICVDD] = "MICVDD",
> };
> 
> static const char *rt5682s_supply_names[RT5682S_NUM_SUPPLIES] = {
> 	[RT5682S_SUPPLY_AVDD] = "avdd",
> 	[RT5682S_SUPPLY_MICVDD] = "micvdd",
> };
> 
> for (...) assign_supply_names;
> ret = devm_regulator_bulk_get(...);
> 
> if (ret) {
> 	for (...) assign_legacy_supply_names;
> 	ret = devm_regulator_bulk_get(...)
> 	if (ret)
> 		return ret;
> }
> 
> What do you think?

No one seems opposed to it, so I'll add that to the next version.

Thanks,
Nícolas



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