From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 11F4A10F1; Sat, 24 Jan 2026 21:24:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769289844; cv=none; b=gGeXgRom2TG9anBs7yuRvPLP+v5qY7LIO+mH8ehgTSddoeeH8TkNvTfUy/V/0IYjW0GOYfcjuTNvDii7TTC4Y6wENVfLUugUS3lzgg3jM9VxD9lg3WK6rBc8Q0U3YtpCIWSH5O4IkG0UYe1JIrQuKS18ab1get7HdyI8Usopob4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769289844; c=relaxed/simple; bh=AJFo4eAxCnItWVeRCP+XLYGtuLNEENvSrhswbI1WgZw=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=HsvXhTcPLzYc1JnNKtUk9FDN4IJtdhnBedeFDRsvn1fws2AriVcNIk5ibaFpKP3GRF/AvYrZlM4vJ9e5r+NRbpsV7xFkk7lVu4YuNLwmalPikwfu6+oF8J2xAFf0es+Cl1qXYgsaQELlRVFREvmdhiThrHM6O71REQrz0wp3Tvg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uCr7YfHd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uCr7YfHd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7151DC116D0; Sat, 24 Jan 2026 21:24:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769289843; bh=AJFo4eAxCnItWVeRCP+XLYGtuLNEENvSrhswbI1WgZw=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=uCr7YfHdiPtr0RJAwoaf+mfGXnleR92qoy5sh34I7SD8ghUmrTH5rs3fcpdAXM/Pg RlrVT5qnq//dBIxoDUIy8PNq1G2Pr0XGBPljTsZnBWgUe/tV1R2kcc/s2ie49u+/vR faAkRoRI/uhWjdn+S2pKCnndTU+TP49iO8PamH2VRy4pAuQbAoZEnh8BgYtCUwTzLD FEvVvHK2CobUcpQgsHIpFzFhHQlChoRfEtg5KndfQjJCsWAbnh9FZQTUSwcVL9Us7V RX2Jrya3q3xXLQJB6t9XJ3KKi+bX6VpL8wWM8VVNjCq9aP2mrBjvp8FtKBN4B6gqv8 JH/oCMQeU6V/g== Date: Sat, 24 Jan 2026 15:24:01 -0600 From: Bjorn Helgaas To: manivannan.sadhasivam@oss.qualcomm.com Cc: Bjorn Helgaas , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , Damien Le Moal , Niklas Cassel , Linus Walleij , Bartosz Golaszewski , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, Stephan Gerhold , Dmitry Baryshkov , linux-pm@vger.kernel.org, linux-ide@vger.kernel.org, Bartosz Golaszewski Subject: Re: [PATCH v6 2/4] PCI/pwrctrl: Add support for handling PCIe M.2 connectors Message-ID: <20260124212401.GA181386@bhelgaas> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260122-pci-m2-v6-2-575da9f97239@oss.qualcomm.com> On Thu, Jan 22, 2026 at 10:46:52PM +0530, Manivannan Sadhasivam via B4 Relay wrote: > From: Manivannan Sadhasivam > > Add support for handling the PCIe M.2 connectors as Power Sequencing > devices. These connectors are exposed as the Power Sequencing devices > as they often support multiple interfaces like PCIe/SATA, USB/UART to the > host machine and each interfaces could be driven by different client > drivers at the same time. s/each interfaces/each interface/ > This driver handles the PCIe interface of these connectors. It first checks > for the presence of the graph port in the Root Port node with the help of > of_graph_is_present() API, if present, it acquires/poweres ON the > corresponding pwrseq device. s/API, if/API. If/ s/poweres/powers/ > Once the pwrseq device is powered ON, the driver will skip parsing the Root > Port/Slot resources and registers with the pwrctrl framework. s/and registers/and register/