linux-kernel - Re: [PATCH v3 5/6] phy: exynos5-usbdrd: convert Vbus supplies to regulator

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Date: Mon, 24 Jun 2024 12:28:18 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: André Draszik <andre.draszik@...aro.org>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Marek Szyprowski <m.szyprowski@...sung.com>, Sylwester Nawrocki <s.nawrocki@...sung.com>, 
	Alim Akhtar <alim.akhtar@...sung.com>, Sam Protsenko <semen.protsenko@...aro.org>, 
	Krzysztof Kozlowski <krzk@...nel.org>, Tudor Ambarus <tudor.ambarus@...aro.org>, 
	Will McVicker <willmcvicker@...gle.com>, Roy Luo <royluo@...gle.com>, kernel-team@...roid.com, 
	linux-phy@...ts.infradead.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 5/6] phy: exynos5-usbdrd: convert Vbus supplies to regulator_bulk

Hi André,

On Mon, 17 Jun 2024 at 17:45, André Draszik <andre.draszik@...aro.org> wrote:
>
> Using the regulator_bulk APIs, the handling of power supplies becomes
> much simpler. There is no need anymore to check if regulators have been
> acquired or not, the bulk APIs will do all the work for us. We can also
> drop the various handles to the individual power supplies in the driver
> runtime data and instead simply treat them all as one thing. Error
> cleanup also becomes much simpler.
>
> Converting to the regulator_bulk APIs also makes it easier to add
> support for those SoCs that have additional power supplies for the PHY.
> Google Tensor gs101 is one example of such a SoC. Otherwise we'd have
> to add all additional supplies individually via individual calls to
> regulator_get() and enable/disable handle them all individually,
> including complicated error handling. That doesn't scale and clutters
> the code.
>
> Just update the code to use the regulator_bulk APIs.
>
> Signed-off-by: André Draszik <andre.draszik@...aro.org>
> ---

Reviewed-by:  Peter Griffin <peter.griffin@...aro.org>
and
Tested-by: Peter Griffin <peter.griffin@...aro.org>

Tested using my Pixel 6 pro device. USB comes up and it is possible to
use adb from the host computer to the phone.

regards,

Peter

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