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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id oh9-20020a056214438900b00684225ef3a0sm750964qvb.93.2024.02.15.07.40.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Feb 2024 07:40:14 -0800 (PST) Message-ID: <1b2ffe636a19faef87b9c48fee6d17bfb9f1a3bf.camel@redhat.com> Subject: Re: [PATCH v3 00/18] Add suspend to ram support for PCIe on J7200 From: Philipp Stanner To: Thomas Richard , Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Tony Lindgren , Haojian Zhuang , Vignesh R , Aaro Koskinen , Janusz Krzysztofik , Andi Shyti , Peter Rosin , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , Lorenzo Pieralisi , Krzysztof =?UTF-8?Q?Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org, linux-phy@lists.infradead.org, linux-pci@vger.kernel.org, gregory.clement@bootlin.com, theo.lebrun@bootlin.com, thomas.petazzoni@bootlin.com, u-kumar1@ti.com, Bartosz Golaszewski , Andy Shevchenko Date: Thu, 15 Feb 2024 16:40:10 +0100 In-Reply-To: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com> References: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.48.4 (3.48.4-1.fc38) Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2024-02-15 at 16:17 +0100, Thomas Richard wrote: > This add suspend to ram support for the PCIe (RC mode) on J7200 > platform. >=20 > In RC mode, the reset pin for endpoints is managed by a gpio expander > on a > i2c bus. This pin shall be managed in suspend_noirq() and > resume_noirq(). > The suspend/resume has been moved to suspend_noirq()/resume_noirq() > for > pca953x (expander) and pinctrl-single. >=20 > To do i2c accesses during suspend_noirq/resume_noirq, we need to > force the > wakeup of the i2c controller (which is autosuspended) during suspend > callback.=20 > It's the only way to wakeup the controller if it's autosuspended, as > runtime pm is disabled in suspend_noirq and resume_noirq. >=20 > The main change in this v3 is the removal of the probe boolean for > the > functions wiz_clock_probe() and cdns_pcie_host_setup(). > Their contents were split in multiple functions which are called in > the > resume_noirq() callbacks. >=20 > Signed-off-by: Thomas Richard > --- > Changes in v3: > - pinctrl-single: split patch in two parts, a first patch to remove > the > =C2=A0 dead code, a second to move suspend()/resume() callbacks to noirq. > - i2c-omap: add a comments above the suspend_noirq() callback. > - mux: now mux_chip_resume() try to restores all muxes, then return 0 > if > =C2=A0 all is ok or the first failure. > - mmio: fix commit message. > - phy-j721e-wiz: add a patch to use dev_err_probe() instead of > dev_err() in > =C2=A0 the wiz_clock_init() function. > - phy-j721e-wiz: remove probe boolean for the wiz_clock_init(), > rename the > =C2=A0 function to wiz_clock_probe(), extract hardware configuration part > in a > =C2=A0 new function wiz_clock_init(). > - phy-cadence-torrent: use dev_err_probe() and fix commit messages > - pcie-cadence-host: remove probe boolean for the > cdns_pcie_host_setup() > =C2=A0 function and extract the link setup part in a new function > =C2=A0 cdns_pcie_host_link_setup(). > - pcie-cadence-host: make cdns_pcie_host_init() global. > - pci-j721e: use the cdns_pcie_host_link_setup() > cdns_pcie_host_init() > =C2=A0 functions in the resume_noirq() callback. > - Link to v2: > https://lore.kernel.org/r/20240102-j7200-pcie-s2r-v2-0-8e4f7d228ec2@bootl= in.com >=20 > Changes in v2: > - all: fix commits messages. > - all: use DEFINE_NOIRQ_DEV_PM_OPS and pm_sleep_ptr macros. > - all: remove useless #ifdef CONFIG_PM. > - pinctrl-single: drop dead code > - mux: add mux_chip_resume() function in mux core. > - mmio: resume sequence is now a call to mux_chip_resume(). > - phy-cadence-torrent: fix typo in resume sequence > (reset_control_assert() > =C2=A0 instead of reset_control_put()). > - phy-cadence-torrent: use PHY instead of phy. > - pci-j721e: do not shadow cdns_pcie_host_setup return code in resume > =C2=A0 sequence. > - pci-j721e: drop dead code. > - Link to v1: > https://lore.kernel.org/r/20240102-j7200-pcie-s2r-v1-0-84e55da52400@bootl= in.com >=20 > --- > Thomas Richard (15): > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 gpio: pca953x: move suspend()/resume() to > suspend_noirq()/resume_noirq() > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 pinctrl: pinctrl-single: remove dead code = in suspend() and > resume() callbacks > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 pinctrl: pinctrl-single: move suspend()/re= sume() callbacks to > noirq > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i2c: omap: wakeup the controller during su= spend() callback > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 mux: add mux_chip_resume() function > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: ti: phy-j721e-wiz: use dev_err_probe(= ) instead of > dev_err() > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: ti: phy-j721e-wiz: split wiz_clock_in= it() function > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: ti: phy-j721e-wiz: add resume support > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: cadence-torrent: extract calls to clk= _get from > cdns_torrent_clk > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: cadence-torrent: register resets even= if the phy is > already configured > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: cadence-torrent: add already_configur= ed to struct > cdns_torrent_phy > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: cadence-torrent: remove noop_ops phy = operations > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 phy: cadence-torrent: add suspend and resu= me support > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PCI: cadence: extract link setup sequence = from > cdns_pcie_host_setup() > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PCI: cadence: set cdns_pcie_host_init() gl= obal >=20 > Th=C3=A9o Lebrun (3): > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 mux: mmio: add resume support > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PCI: j721e: add reset GPIO to struct j721e= _pcie > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 PCI: j721e: add suspend and resume support For the PCI patches Bjorn is most likely going to ask you to adjust them to PCI's common commit style; see here [1] In particular, PCI (afaik) has no convention for naming subcomponents such as j721e and the info following the : is written beginning with an upper case, e.g. PCI: Add suspend and resume support for j721e Regards, P. [1] https://lore.kernel.org/linux-pci/20171026223701.GA25649@bhelgaas-glapt= op.roam.corp.google.com/ >=20 > =C2=A0drivers/gpio/gpio-pca953x.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0 7 +- > =C2=A0drivers/i2c/busses/i2c-omap.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0 |=C2=A0 22 ++++ > =C2=A0drivers/mux/core.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2= =A0 30 +++++ > =C2=A0drivers/mux/mmio.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2= =A0 12 ++ > =C2=A0drivers/pci/controller/cadence/pci-j721e.c=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 | 102 > ++++++++++++++++- > =C2=A0drivers/pci/controller/cadence/pcie-cadence-host.c |=C2=A0 44 +++++= --- > =C2=A0drivers/pci/controller/cadence/pcie-cadence.h=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 |=C2=A0 12 ++ > =C2=A0drivers/phy/cadence/phy-cadence-torrent.c=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 121 > +++++++++++++++------ > =C2=A0drivers/phy/ti/phy-j721e-wiz.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 | 119 > +++++++++++++------- > =C2=A0drivers/pinctrl/pinctrl-single.c=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= |=C2=A0 28 ++--- > =C2=A0include/linux/mux/driver.h=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0=C2=A0 1 + > =C2=A011 files changed, 380 insertions(+), 118 deletions(-) > --- > base-commit: 00ff0f9ce40db8e64fe16c424a965fd7ab769c42 > change-id: 20240102-j7200-pcie-s2r-ecb1a979e357 >=20 > Best regards, From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4AB22C4829E for ; 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[149.14.88.26]) by smtp.gmail.com with ESMTPSA id oh9-20020a056214438900b00684225ef3a0sm750964qvb.93.2024.02.15.07.40.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Feb 2024 07:40:14 -0800 (PST) Message-ID: <1b2ffe636a19faef87b9c48fee6d17bfb9f1a3bf.camel@redhat.com> Subject: Re: [PATCH v3 00/18] Add suspend to ram support for PCIe on J7200 From: Philipp Stanner To: Thomas Richard , Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Tony Lindgren , Haojian Zhuang , Vignesh R , Aaro Koskinen , Janusz Krzysztofik , Andi Shyti , Peter Rosin , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , Lorenzo Pieralisi , Krzysztof =?UTF-8?Q?Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org, linux-phy@lists.infradead.org, linux-pci@vger.kernel.org, gregory.clement@bootlin.com, theo.lebrun@bootlin.com, thomas.petazzoni@bootlin.com, u-kumar1@ti.com, Bartosz Golaszewski , Andy Shevchenko Date: Thu, 15 Feb 2024 16:40:10 +0100 In-Reply-To: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com> References: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com> User-Agent: Evolution 3.48.4 (3.48.4-1.fc38) MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240215_074019_379317_AF4C47BC X-CRM114-Status: GOOD ( 29.84 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org T24gVGh1LCAyMDI0LTAyLTE1IGF0IDE2OjE3ICswMTAwLCBUaG9tYXMgUmljaGFyZCB3cm90ZToK 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