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Tue, 19 Jan 2021 05:55:00 -0800 (PST) Date: Tue, 19 Jan 2021 14:54:58 +0100 From: Thierry Reding To: JC Kuo Cc: gregkh@linuxfoundation.org, robh@kernel.org, jonathanh@nvidia.com, kishon@ti.com, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, nkristam@nvidia.com Subject: Re: [PATCH v6 07/15] phy: tegra: xusb: Add sleepwalk and suspend/resume Message-ID: References: <20210119085546.725005-1-jckuo@nvidia.com> <20210119085546.725005-8-jckuo@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="wB9qNvXHiaPN/M6W" Content-Disposition: inline In-Reply-To: <20210119085546.725005-8-jckuo@nvidia.com> User-Agent: Mutt/2.0.4 (26f41dd1) (2020-12-30) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --wB9qNvXHiaPN/M6W Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 19, 2021 at 04:55:38PM +0800, JC Kuo wrote: > This commit adds sleepwalk/wake and suspend/resume interfaces > to Tegra XUSB PHY driver. >=20 > Tegra XUSB host controller driver makes use of sleepwalk functions > to enable/disable sleepwalk circuit which is in always-on partition > and can respond to USB resume signals when controller is not powered. > Sleepwalk can be enabled/disabled for any USB UPHY individually. >=20 > - tegra_xusb_padctl_enable_phy_sleepwalk() > - tegra_xusb_padctl_disable_phy_sleepwalk() >=20 > Tegra XUSB host controller driver makes use of wake functions to > enable/disable/query wake circuit which is in always-on partition > can wake system up when USB resume happens. > Wake circuit can be enabled/disabled for any USB PHY individually. >=20 > - tegra_xusb_padctl_enable_phy_wake() > - tegra_xusb_padctl_disable_phy_wake() > - tegra_xusb_padctl_remote_wake_detected() >=20 > This commit also adds two system suspend stubs that can be used to > save and restore XUSB PADCTL context during system suspend and > resume. > - tegra_xusb_padctl_suspend_noirq() > - tegra_xusb_padctl_resume_noirq() >=20 > Signed-off-by: JC Kuo > --- > v6: > no change > v5: > no change > v4: > move sleepwalk/wake stubs from 'struct tegra_xusb_padctl_ops' to > 'struct tegra_xusb_lane_ops' > v3: > commit message improvement, no change in code >=20 > drivers/phy/tegra/xusb.c | 82 ++++++++++++++++++++++++++++++++++ > drivers/phy/tegra/xusb.h | 8 ++++ > include/linux/phy/tegra/xusb.h | 10 ++++- > 3 files changed, 99 insertions(+), 1 deletion(-) Acked-by: Thierry Reding --wB9qNvXHiaPN/M6W Content-Type: application/pgp-signature; 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