From patchwork Mon Jan 15 16:14:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Richard X-Patchwork-Id: 762891 Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F2139179B0; Mon, 15 Jan 2024 16:16:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="RJ1p+lSe" Received: by mail.gandi.net (Postfix) with ESMTPSA id C8333C000A; Mon, 15 Jan 2024 16:16:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1705335375; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=FTQqCzxmqCmlYgHh3ktXPX0P1HCGFzF7LoD+ZqCYJUk=; b=RJ1p+lSeuPctrMJTsfUuaITNbe+buWSru/jnSfFXQoT8He0ouAn9HpqNISomUAfaiuYaDb sj6wgjZCcgcWoIQT/jPEDnQKPrJ/YEEMSRheHxrOvbq/NVyhWfRW2rJ8HZ5XwCY4m+6hx7 gWbH9Os6b24MmF47qQhtyHcjU8F7uaGeeIcwbmb5LPRRuzAxUcwAJ6qNct71edKD8qCI8y FYnDk1JlLnJxaRym4sQEIcixdOi2mDDqSEs4t7GDk5AwYGZeSz8OvQoqIddG4V3frE/e1G TKEUv/CbSR+Xmmu8swfG7A3CjqR/lRNY+WvPkgL4C8PMHHYyG114pVWaPADOvQ== From: Thomas Richard Subject: [PATCH 00/14] Add suspend to ram support for PCIe on J7200 Date: Mon, 15 Jan 2024 17:14:41 +0100 Message-Id: <20240102-j7200-pcie-s2r-v1-0-84e55da52400@bootlin.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAPJZpWUC/x2NQQrCQAwAv1JyNpCNylK/Ih6ya7QRXEsiIpT+3 a3HYRhmgVA3DTgNC7h+LOzVOqTdAHWSdle0a2dg4gMlYnxkJsK5mmKwo9aSZMyj7o8ZelQkFIt Lq9OWPSXe6puYXW/2/Z/Ol3X9AbewuWd5AAAA To: 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 , Tom Joseph , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=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, Thomas Richard X-Mailer: b4 0.12.0 X-GND-Sasl: thomas.richard@bootlin.com This add suspend to ram support for the PCIe (RC mode) on J7200 platform. 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. 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. It's the only way to wakeup the controller if it's autosuspended, as runtime pm is disabled in suspend_noirq and resume_noirq. Signed-off-by: Thomas Richard --- Thomas Richard (10): gpio: pca953x: move suspend/resume to suspend_noirq/resume_noirq pinctrl: pinctrl-single: move suspend/resume to suspend_noirq/resume_noirq i2c: omap: wakeup the controller during suspend callback phy: ti: phy-j721e-wiz: make wiz_clock_init callable multiple times phy: ti: phy-j721e-wiz: add resume support phy: cadence-torrent: extract calls to clk_get from cdns_torrent_clk phy: cadence-torrent: register resets even if the phy is already configured phy: cadence-torrent: move already_configured to struct cdns_torrent_phy phy: cadence-torrent: remove noop_ops phy operations phy: cadence-torrent: add suspend and resume support Théo Lebrun (4): mux: mmio: Add resume support PCI: cadence: add resume support to cdns_pcie_host_setup() PCI: j721e: move reset GPIO to device struct PCI: j721e: add suspend and resume support drivers/gpio/gpio-pca953x.c | 8 +- drivers/i2c/busses/i2c-omap.c | 15 +++ drivers/mux/mmio.c | 34 ++++++ drivers/pci/controller/cadence/pci-j721e.c | 86 ++++++++++++-- drivers/pci/controller/cadence/pcie-cadence-host.c | 49 ++++---- drivers/pci/controller/cadence/pcie-cadence-plat.c | 2 +- drivers/pci/controller/cadence/pcie-cadence.h | 7 +- drivers/phy/cadence/phy-cadence-torrent.c | 125 +++++++++++++++------ drivers/phy/ti/phy-j721e-wiz.c | 99 ++++++++++++---- drivers/pinctrl/pinctrl-single.c | 19 ++-- 10 files changed, 342 insertions(+), 102 deletions(-) --- base-commit: 00ff0f9ce40db8e64fe16c424a965fd7ab769c42 change-id: 20240102-j7200-pcie-s2r-ecb1a979e357 Best regards,