Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 21 Jul 2022 16:05:59 +0100
From:   Mark Brown <broonie@kernel.org>
To:     Doug Anderson <dianders@chromium.org>
Cc:     Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
        Johan Hovold <johan@kernel.org>,
        Kuogee Hsieh <quic_khsieh@quicinc.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Vinod Koul <vkoul@kernel.org>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run>,
        Stephen Boyd <swboyd@chromium.org>,
        Daniel Vetter <daniel@ffwll.ch>,
        David Airlie <airlied@linux.ie>,
        Andy Gross <agross@kernel.org>,
        "Abhinav Kumar (QUIC)" <quic_abhinavk@quicinc.com>,
        "Aravind Venkateswaran (QUIC)" <quic_aravindh@quicinc.com>,
        Sankeerth Billakanti <quic_sbillaka@quicinc.com>,
        freedreno <freedreno@lists.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
        Rob Herring <robh@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: Re: [PATCH v16 0/3] eDP/DP Phy vdda realted function
Message-ID: <YtlrV5R+JMxb7Dlu@sirena.org.uk>
References: <1657038556-2231-1-git-send-email-quic_khsieh@quicinc.com>
 <YtkrDcjTGhpaU1e0@hovoldconsulting.com>
 <CAA8EJprQnnWjDZJy9+zUBsVQCi3jtc0Ngtzzk9MXpwOvuAS68g@mail.gmail.com>
 <CAD=FV=W0m-x9JC=5hQ3urSNmUp8sY-u8YkNd66yrKfRNAH4rcg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
        protocol="application/pgp-signature"; boundary="4+965gYIfqnlK5HS"
Content-Disposition: inline
In-Reply-To: <CAD=FV=W0m-x9JC=5hQ3urSNmUp8sY-u8YkNd66yrKfRNAH4rcg@mail.gmail.com>
Precedence: bulk


--4+965gYIfqnlK5HS
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Thu, Jul 21, 2022 at 07:49:55AM -0700, Doug Anderson wrote:

> Every single LDO on Qualcomm's PMICs seems to be able to be set in
> "high power mode" and "low power mode", but I think the majority of
> clients only really care about two things: on and in high power mode
> vs. off. I think the amount of stuff peripherals can do in low power
> mode is super limited, so you have to be _really_ sure that the
> peripheral won't draw too much current without you having a chance to
> reconfigure the regulator.

*Generally* a low power mode would be mainly useful for low power
retention type states, not active use.

--4+965gYIfqnlK5HS
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmLZa1YACgkQJNaLcl1U
h9C/YwgAggSqJZzhNITYTlghSm/AWQaIAIVhEGIeegfsi2pZcxO5KOqw/xYl+q4A
D2JtlyMbsXW5ca0/fk45/87qmjXS5UfIBQliyfda4upNtQ2lPbAUe9fpltwGmOPY
f3xRGPlyKZNXAtNya9RCUJwYcG9zi4QIplBvRF0rvNdd+hkvfsOqVUcD8f7xB+GN
aW67ivRaseeGqFewmetRGUj4QC8Gr8cZgkc1YYSAAHHFlKToY3G8WiF4v2Y2tfNh
I2DK6ADm/mkXCqqqNXcozM9994DU8jR0GK1Be1PGoxOFnYpwxR57CuP0NB+9v+n8
4sW5BhjQndCZ6vsuX8fHcwaH5PIU+Q==
=auZa
-----END PGP SIGNATURE-----

--4+965gYIfqnlK5HS--