linux-kernel - Re: [PATCH v3 6/6] regulator: dt-bindings: rtq2208: Add property to get ldo of RTQ2208 is adjustable or not

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Date: Wed, 15 May 2024 16:51:30 +0100
From: Conor Dooley <conor@...nel.org>
To: Alina Yu <alina_yu@...htek.com>
Cc: Conor Dooley <conor.dooley@...rochip.com>,
	Mark Brown <broonie@...nel.org>, lgirdwood@...il.com,
	robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, johnny_lai@...htek.com,
	cy_huang@...htek.com
Subject: Re: [PATCH v3 6/6] regulator: dt-bindings: rtq2208: Add property to
 get ldo of RTQ2208 is adjustable or not

On Wed, May 15, 2024 at 05:02:29PM +0800, Alina Yu wrote:
>         properties:
>           richtek,fixed-microvolt:
>             description: |
> -              If it exists, the voltage is unadjustable.
> -              There is no risk-free method for software to determine whether the ldo vout is fixed or not.
> -              Therefore, it can only be done in this way.
> +
> +              There are two types of LDO VOUT: fixed voltage mode and adjustable voltage mode.
> +              For fixed voltage mode, the working voltage is out side the range of the adjustable mode.
> +              The constraints are unsuitable to describe both modes.
> +              Therefore, this property is added to specify the fixed LDO VOUT.

I think you could do something as simple as:
	This property can be used to set a fixed operating voltage that lies
	outside of the range of the regulator's adjustable mode.

BTW, you should probably change the example so that the voltage you add
there is actually outside of the range, rather than identical to one of
the range's constraints :)

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