From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [PATCH V4 10/18] clk: tegra: add save and restore context support for peripheral clocks Date: Wed, 26 Jun 2019 12:12:13 +0200 Message-ID: <20190626101213.GC6362@ulmo> References: <1561345379-2429-1-git-send-email-skomatineni@nvidia.com> <1561345379-2429-11-git-send-email-skomatineni@nvidia.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="uh9ZiVrAOUUm9fzH" Return-path: Content-Disposition: inline In-Reply-To: <1561345379-2429-11-git-send-email-skomatineni@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: Sowjanya Komatineni Cc: jonathanh@nvidia.com, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, linus.walleij@linaro.org, stefan@agner.ch, mark.rutland@arm.com, pdeschrijver@nvidia.com, pgaikwad@nvidia.com, sboyd@kernel.org, linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, jckuo@nvidia.com, josephl@nvidia.com, talho@nvidia.com, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, mperttunen@nvidia.com, spatra@nvidia.com, robh+dt@kernel.org, digetx@gmail.com, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org --uh9ZiVrAOUUm9fzH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Jun 23, 2019 at 08:02:51PM -0700, Sowjanya Komatineni wrote: > This patch implements save and restore context for peripheral fixed > clock ops, peripheral gate clock ops, sdmmc mux clock ops, and > peripheral clock ops. >=20 > During system suspend, core power goes off and looses the settings > of the Tegra CAR controller registers. >=20 > So during suspend entry clock and reset state of peripherals is saved > and on resume they are restored to have clocks back to same rate and > state as before suspend. >=20 > Signed-off-by: Sowjanya Komatineni > --- > drivers/clk/tegra/clk-periph-fixed.c | 31 ++++++++++++++++++++++++++ > drivers/clk/tegra/clk-periph-gate.c | 34 ++++++++++++++++++++++++++++ > drivers/clk/tegra/clk-periph.c | 43 ++++++++++++++++++++++++++++++= ++++++ > drivers/clk/tegra/clk-sdmmc-mux.c | 30 +++++++++++++++++++++++++ > drivers/clk/tegra/clk.h | 8 +++++++ > 5 files changed, 146 insertions(+) Acked-by: Thierry Reding --uh9ZiVrAOUUm9fzH Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl0TRP0ACgkQ3SOs138+ s6HUlxAAg/MnASD5SEdQ3qYEq3xg2eWTdZZD+3JhKSO+AJM87Pcw4Q+k+vAaG5fC iZ1QPSnJwL6M8iyjlOwM+J9ZJR+0ZtrHlBZ2Ru+wvKbUCN3fBXg0n7iFEwtWfRwe 6nut9ykShtaLtoq7bg3XFJr4OmZONSj+tsXBDJnCYwHSHSerV/+ElJhB9U94I34s 52DayIuq6xO2DOqo3HCP6nOFRsev73+vFJSZHFxANWiDcMW4XzZ62wZJ6DQLUmuC vsdEE0SbCuUhPoAsC4G1sqB39EIg8eIgBKPgOlLuCc5TazZdglt3eGfjmsw+/AR9 6ezH/g9lKZ3h9JtZkkM1gckkj8TLpToP00VFV1m6KD3xLGsslhwPLAQT171Sphia pyLO8rxqaYyX9boAHOGsq03kFmlr6/uVHn3bxa/vhcsX5/iOzVGZUHwqC50ATm5R yHPx38hJIAQuFcv+OfSigkAOkXHhPAOSICisE/Mp8v5Ecb4bNF4H+GDpcgkSvrFp luAmTT/PLaixvu6B+r+BKbRpp8llcaAzMNS2I6YsnLGHupt6LuIzprwTxDQ1xcDm eZZH5kjMP8wBrynMHGdhnAYUIXgADVz07RLZ9E3Tr1Ur4yHBIJRHD5sUU/u5ILJI CLOaAS+4RVlCizUE7ILijzsWb19EmLpwcbB1GLCgK7FW3nae51s= =Fq1s -----END PGP SIGNATURE----- --uh9ZiVrAOUUm9fzH--