Re: [PATCH] ASoC: AMD: Add a fix voltage regulator for DA7219 and ADAU7002

From: Mark Brown
Date: Tue Jul 24 2018 - 13:14:53 EST

On Mon, Jul 23, 2018 at 10:56:44AM +0530, Agrawal, Akshu wrote:

> This approach shows inconsistencies and in some boot cycles da7219 fails
> to get regulator. Form the logs (below) it shows time gap between the
> time we call âplatform_device_register(&acp_da7219_regulator);â and when
> the regulator actually gets registered.

This hack isn't going to help with that AFAICT, you're still registering
a platform device and relying on it appearing in time? It just
registers less often. I think what we need here is a way to register
the link between the devices independently of the regulator registering
or firmware, that way we won't get a dummy regulator. Since AFAICT we
know the names of the devices that are being registered we can use their
dev_name()s which seems tractable - we need a function in
regulator/machine.h which lets you provide a set of struct
regulator_consumer_supply for a target dev_name.

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