linux-kernel - Re: [PATCH] regulator: virtual: add devicetree support

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Message-ID: <YhZDVGC7dPiisnI+@sirena.org.uk>
Date:   Wed, 23 Feb 2022 14:23:16 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Vincent Whitchurch <vincent.whitchurch@...s.com>
Cc:     Liam Girdwood <lgirdwood@...il.com>, kernel@...s.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regulator: virtual: add devicetree support

On Fri, Feb 18, 2022 at 12:06:03PM +0100, Vincent Whitchurch wrote:

> The reg-virt-consumer is very useful for development and testing of
> regulator drivers since it allows voltages and modes to be set from
> userspace.  However, it currently requires platform data so it cannot be
> used on modern platforms.  Add support for probing it from the
> devicetree to remedy this.

Meh, you can add a bit of code on module_init() to register a platform
device or something.

> Since this driver is only meant for testing and is a purely software
> construct, no binding documentation is added.

That's not going to stop anyone.  We should at the very least be
printing very loud warnings if anyone tries to intantiate this.

> +	if (!reg_id)
> +		reg_id = "default";
> +

Oh?

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