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 50BCC2E630; Sat, 1 Mar 2025 12:02:13 +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=1740830538; cv=none; b=k96zrUo1AOMgBn4HPjFpcDI5FF41LWyF5iIhTjmAXxL6MCFWcuGD8p5xv2hlTWbiNNDeE0TqrxRltH0rwaw0QSWap/NzEoSVd+zZKlCi4myUylnh9+R6lVcfEOxHeN0xYvdIFbscXGz+6/fEm9DrotQto3O8xT4aiBRq9kN2UQk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740830538; c=relaxed/simple; bh=+AAMJB/7hTU30KZCU4oBLcGkEpeVOQ4Sdqlumm+i4rs=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=nkK8rmIRzxR4BSVtx3e98G5gHFbQLvkKaecArYG6uxHK87utM/VFCfdb6EpR41QBSN3iseUhwYQZMCu6wp2wpSYAmLt+G4dwTdWyxF6os+5LSA2XA0/DEoiwrFCv6xdM2teEur9ZnNBzt3Syv5ybIRECH6jiQokrArkiAIMFfbE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mpMHOMcT; 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="mpMHOMcT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 998A0C4CEDD; Sat, 1 Mar 2025 12:02:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1740830533; bh=+AAMJB/7hTU30KZCU4oBLcGkEpeVOQ4Sdqlumm+i4rs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=mpMHOMcTcDaKO8h/RY95ri0hmyp0V2BRYqCtoAoZhlW308RiMhWVVrWPqvb2zxTY2 NkRJUqvIAazSb/Wad3cMHGvQ/z6YBnZ9ruhVp2GLiaKLa5Gu/8sUz+cft6Tg13pNs4 50dWvVx31LiV3qaxNDKXDEjX+nETxREDjJJ6QZzVcMeqTn1DzDLI07fcwABz+MSoLM vH1DaL5LsobXo1P+EEs9TymdimdYFFIs0ZMv8Om58JpIQnW5+cC9L9kA7TQw1+fHwG buxM27vmpfCwvGxjeLUyHQcvyo8H+YiOQpv6UzBPANnkYfD7yRs6+eUwIrJLOirD4b aEdabd4Sen7hQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1toLXn-009LnL-Bp; Sat, 01 Mar 2025 12:02:11 +0000 Date: Sat, 01 Mar 2025 12:02:09 +0000 Message-ID: <86ldtpot6m.wl-maz@kernel.org> From: Marc Zyngier To: Frank Li Cc: Kishon Vijay Abraham I , "Rafael J. Wysocki" , Thomas Gleixner , Anup Patel , Greg Kroah-Hartman , Danilo Krummrich , Manivannan Sadhasivam , Krzysztof =?UTF-8?B?V2lsY3p5xYRza2k=?= , Bjorn Helgaas , Arnd Bergmann , Shuah Khan , Richard Zhu , Lucas Stach , Lorenzo Pieralisi , Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Krzysztof Kozlowski , Conor Dooley , Niklas Cassel , dlemoal@kernel.org, jdmason@kudzu.us, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kselftest@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org Subject: Re: [PATCH v15 00/15] PCI: EP: Add RC-to-EP doorbell with platform MSI controller In-Reply-To: References: <20250211-ep-msi-v15-0-bcacc1f2b1a9@nxp.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.4 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: Frank.li@nxp.com, kishon@kernel.org, rafael@kernel.org, tglx@linutronix.de, apatel@ventanamicro.com, gregkh@linuxfoundation.org, dakr@kernel.org, manivannan.sadhasivam@linaro.org, kw@linux.com, bhelgaas@google.com, arnd@arndb.de, shuah@kernel.org, hongxing.zhu@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, robh@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, krzk+dt@kernel.org, conor+dt@kernel.org, cassel@kernel.org, dlemoal@kernel.org, jdmason@kudzu.us, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-kselftest@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Thu, 20 Feb 2025 20:01:10 +0000, Frank Li wrote: > > On Tue, Feb 11, 2025 at 02:21:53PM -0500, Frank Li wrote: > > Thomas Gleixner and Marc Zyngier: > > Do you have any comments about irq/msi part? It certainly looks better and less invasive than the previous incarnations. Things to fix: - Documentation: the msi-map property usage is undefined outside of a PCIe RC, and the way you describe its use is so vague I read anything in it. Please update Documentation/devicetree/bindings/pci/pci-msi.txt to reflect the new use case. - This IMMUTABLE thing serves no purpose, because you don't randomly plug this end-point block on any MSI controller. They come as part of an SoC. Thanks, M. -- Without deviation from the norm, progress is not possible.