linux-kernel - Re: [PATCH 1/2] clk: qcom: gcc: Add genpd active wakeup flag for sc7180

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Message-ID: <159683666176.1360974.5500366475077976771@swboyd.mtv.corp.google.com>
Date:   Fri, 07 Aug 2020 14:44:21 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Doug Anderson <dianders@...omium.org>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Sandeep Maheswaram <sanm@...eaurora.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>,
        linux-clk@...r.kernel.org, Taniya Das <tdas@...eaurora.org>
Subject: Re: [PATCH 1/2] clk: qcom: gcc: Add genpd active wakeup flag for sc7180

Quoting Stephen Boyd (2020-06-11 15:46:58)
> Quoting Sandeep Maheswaram (2020-06-11 07:28:02)
> > From: Taniya Das <tdas@...eaurora.org>
> > 
> > The USB client requires the usb30_prim gdsc to be kept active for
> > certain use cases, thus add the GENPD_FLAG_ACTIVE_WAKEUP flag.
> 
> Can you please describe more of what this is for? Once sentence doesn't
> tell me much at all. I guess that sometimes we want to wakeup from USB
> and so the usb gdsc should be marked as "maybe keep on for wakeups" with
> the GENPD_FLAG_ACTIVE_WAKEUP flag if the USB controller is wakeup
> enabled?
> 
> > 
> > Signed-off-by: Taniya Das <tdas@...eaurora.org>
> > ---
> 
> Add a Fixes: tag too? And I assume we need to do this for all USB gdscs
> on various SoCs and maybe other GDSCs like PCIe. Any plans to fix those
> GDSCs?
> 

Any update here?