linux-kernel - Re: [PATCH 1/4] phy: ti: phy-da8xx-usb: Add runtime PM support

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Date: Sat, 15 Jun 2024 17:39:44 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Bastien Curutchet <bastien.curutchet@...tlin.com>
Cc: Kishon Vijay Abraham I <kishon@...nel.org>, Bin Liu <b-liu@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	herve.codina@...tlin.com, christophercordahi@...ometrics.ca
Subject: Re: [PATCH 1/4] phy: ti: phy-da8xx-usb: Add runtime PM support

On 28-05-24, 12:20, Bastien Curutchet wrote:
> Runtime PM is not supported while USB PHY can be turned off from
> register accesses.
> 
> Add runtime PM for the USB2.0 PHY. The PHY is entirely shut down to save
> as much power as possible. This means that gadgets will not be discovered
> once suspend state is entered, and suspend state can not be left without
> an explicit user intervention (through sysfs). That's why runtime PM is
> disabled by default.

Acked-by: Vinod Koul <vkoul@...nel.org>

-- 
~Vinod