linux-kernel - Re: [PATCH v1 3/4] arm64: dts: freescale: imx8mm-verdin: replace sleep-moci hog with regulator

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Date: Fri, 5 Apr 2024 18:48:16 +0200
From: Francesco Dolcini <francesco@...cini.it>
To: Stefan Eichenberger <eichest@...il.com>
Cc: robh@...nel.org, krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, francesco.dolcini@...adex.com,
	devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stefan Eichenberger <stefan.eichenberger@...adex.com>
Subject: Re: [PATCH v1 3/4] arm64: dts: freescale: imx8mm-verdin: replace
 sleep-moci hog with regulator

On Fri, Apr 05, 2024 at 06:07:19PM +0200, Stefan Eichenberger wrote:
> From: Stefan Eichenberger <stefan.eichenberger@...adex.com>
> 
> The Verdin family has a signal called sleep-moci which can be used to
> turn off peripherals on the carrier board when the SoM goes into
> suspend. So far we have hogged this signal, which means the peripherals
> are always on and it is not possible to add peripherals that depend on
> the sleep-moci to be on. With this change, we replace the hog with a
> regulator so that peripherals can add their own regulators that use the
> same gpio. Carrier boards that allow peripherals to be powered off in
> suspend can disable this regulator and implement their own regulator to
> control the sleep-moci.
> 
> Signed-off-by: Stefan Eichenberger <stefan.eichenberger@...adex.com>

Reviewed-by: Francesco Dolcini <francesco.dolcini@...adex.com>