Re: Regulator probe
From: Mark Brown
Date: Fri Sep 09 2016 - 11:30:11 EST
On Fri, Sep 09, 2016 at 03:55:27PM +0300, Andy Shevchenko wrote:
> On Fri, 2016-09-09 at 13:17 +0100, Mark Brown wrote:
> > What do you mean? Of course we should handle probe deferral if we
> > fail to get a resource like a GPIO. Are you trying to say that this
> > doesn't work for you?
> No, it doesn't.
> Fixed regulator probe is deferred:
> reg-fixed-voltage reg-fixed-voltage.0.auto: Failed to register
> regulator: -517
So the regulator probe *does* get deferred as expected...
> sdhci-pci 0000:00:01.3: No vmmc regulator found
> Code in sdhci driver is:
> ret = mmc_regulator_get_supply(mmc);
> if (ret == -EPROBE_DEFER)
> return ret;
> mmc->supply.vmmc = devm_regulator_get_optional(dev, "vmmc");
> mmc->supply.vqmmc = devm_regulator_get_optional(dev, "vqmmc");
...and then we correctly report that the optional supply that isn't
mapped (as far as I remember) isn't there.
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