linux-kernel - Re: [PATCH 1/3] arm64: dts: qcom: sdm670: fix USB DP/DM HS PHY interrupts

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Message-ID: <ZX_2YTxSKg4sE2js@hovoldconsulting.com>
Date: Mon, 18 Dec 2023 08:36:01 +0100
From: Johan Hovold <johan@...nel.org>
To: Richard Acayan <mailingradian@...il.com>
Cc: Bjorn Andersson <andersson@...nel.org>, Andy Gross <agross@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>,
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 1/3] arm64: dts: qcom: sdm670: fix USB DP/DM HS PHY
 interrupts

On Fri, Dec 15, 2023 at 07:04:23PM -0500, Richard Acayan wrote:
> On Fri, Dec 15, 2023 at 08:34:39AM +0100, Johan Hovold wrote:
> > On Thu, Dec 14, 2023 at 08:46:27PM -0500, Richard Acayan wrote:

> > > Tested-by: Richard Acayan <mailingradian@...il.com>
> > > 
> > > On a Pixel 3a, plugging in a USB cable doesn't wake up the device
> > > (presumably because there is no wakeup-source property) but this gets
> > > USB working again on linux-next.
> >
> > Thanks for testing. And yes, the wakeup interrupts will indeed not be
> > enabled at system suspend unless the wakeup-source property is there.
> > Did you try adding it?
> 
> Just tested today. Adding it does not cause the system to wake up when
> plugging in a laptop on the Pixel 3a, but that might just be because
> USB wakeups are disabled when the adapter is configured for peripheral
> mode.

Right, wake up is currently only implemented for host mode.

Johan