linux-kernel - Re: [PATCH 2/2] regulator: dt-bindings: rtq2208: Add specified fixed LDO VOUT property

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Message-ID: <20240522094524.GA21859@linuxcarl2.richtek.com>
Date: Wed, 22 May 2024 17:45:24 +0800
From: Alina Yu <alina_yu@...htek.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
CC: <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<cy_huang@...htek.com>
Subject: Re: [PATCH 2/2] regulator: dt-bindings: rtq2208: Add specified fixed
 LDO VOUT property

On Wed, May 22, 2024 at 11:27:06AM +0200, Krzysztof Kozlowski wrote:
> On 22/05/2024 11:03, Alina Yu wrote:
> > On Thu, May 16, 2024 at 02:34:02PM +0200, Krzysztof Kozlowski wrote:
> >> On 16/05/2024 11:20, Alina Yu wrote:
> >>> As the fixed voltage for the LDO is outside the range of the adjustable voltage mode,
> >>> the constraints for this scenario are not suitable to represent both modes.
> >>> Therefore, A property is added to specify the fixed LDO VOUT.
> >>>
> >>> Examples of fixed LDO VOUT and adjustable LDO VOUT is also added to this version.
> >>>
> >>> Signed-off-by: Alina Yu <alina_yu@...htek.com>
> >>> ---
> >>
> >> This is a v1 but I am pretty sure I saw it somewhere and there was
> >> already some sort of discussion. Confused... :(
> >>
> >> Best regards,
> >> Krzysztof
> >>
> > 
> > The discussion regarding this matter took place during v2 and v3.
> 
> So in the future?

Based on the previous discussion, it is scheduled to be included in the linux-next tree.
Will we start a further discussions on this topic?

> 
> > Due to the fixed LDO VOUT being outside the range of the adjustable one,
> > a special-use property has been added to avoid overusing the constraints.
> 
> Hm, why exactly this is not a bool property? What are the benefits?
> 
> Best regards,
> Krzysztof
>

As only the user will know the exact fixed voltage,
the property is defined as a u32 to allow user customization and decision-making.


Thanks,
Alina