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 60ED7C36010 for ; Fri, 4 Apr 2025 20:13:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+2FeCktkfvPJkJ07OXOlNaEf7xOeMaTsjl/GEVqd+Gc=; b=1yzNrqHAKYSA23xeFBgLirhr1G tm74EMaGSexBiniB6an2gbES+29ipraHyV4kU8w/dM7bqfoLOuOfx3PC3wM5IavmnbMfUZGYvJRFT Ui+arSW0BOLRJ1cVmJSgVW+nIiY8wGB8K+aiWGUtSQIWHRkPXpof8YieIx9DMmbNhprLoQ6p5nwi5 djTMX3b+iIyAnL5cGKHo/uaIJWbLbszIgpfl5VFCK7aRQ62pnwVEaM6ocTXyS3rtModB7/N3i2R6m wxQljy2ICKMsXoQkHnpmJzokF8lmCtV5WYByTdNGPPKsrUu1mQhG4XW2DkKaiMSwt1oKGAkTgYzVV 8YBnZijA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1u0nPz-0000000ClIS-1foz; Fri, 04 Apr 2025 20:13:35 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1u0nOE-0000000Cl2s-2Vzo for linux-arm-kernel@lists.infradead.org; Fri, 04 Apr 2025 20:11:46 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 7F44E61139; Fri, 4 Apr 2025 20:11:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B142C4CEDD; Fri, 4 Apr 2025 20:11:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743797501; bh=VHeRdeU1SaiFj8DJEwuhTtm9mNs5SIztyxEFxics7os=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=GAmhRw7Nz52NW/mVabsCa688AdBJSVdZkV1u1WrVh4Ig1it56SoT6FD/MZv5N6aj2 Ttq1X3XOJkzXfty8JVHMdmJA7mfW8hangGrm80Ra7FDXShmQXXfpXZC2P8qgC5Jp+s uT0vlIO1IWcTxTTQNffblOjXVclF9rOn9xkb5OLCMH3RRzgn11MwOHniYCR2wV4tLD 9dcXkPLT1uewh810i7xpoIW7iBxu+bSFZlLBfuG9AvUcgpbfmqRECY74Rm0HGT6GLr Pvccpg3Vra1Bfv2lTc+sZHuctyRI/NFIZAKZjA1CL0P5GdvdS6Mw60hPa4pydOKfu/ EF9kclGKQM1QA== Date: Fri, 4 Apr 2025 15:11:40 -0500 From: Rob Herring To: Frank Li Cc: Kishon Vijay Abraham I , "Rafael J. Wysocki" , Thomas Gleixner , Anup Patel , Marc Zyngier , Greg Kroah-Hartman , Danilo Krummrich , Manivannan Sadhasivam , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Bjorn Helgaas , Arnd Bergmann , Shuah Khan , Richard Zhu , Lucas Stach , Lorenzo Pieralisi , 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 v16 04/15] dt-bindings: pci: pci-msi: Add support for PCI Endpoint msi-map Message-ID: <20250404201140.GA236599-robh@kernel.org> References: <20250404-ep-msi-v16-0-d4919d68c0d0@nxp.com> <20250404-ep-msi-v16-4-d4919d68c0d0@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250404-ep-msi-v16-4-d4919d68c0d0@nxp.com> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Apr 04, 2025 at 03:01:05PM -0400, Frank Li wrote: > Document the use of msi-map for PCI Endpoint (EP) controllers, which can > use MSI as a doorbell mechanism. Each EP controller can support up to 8 > physical functions and 65,536 virtual functions. > > Define how to construct device IDs using function bits [2:0] and virtual > function index bits [31:3], enabling msi-map to associate each child device > with a specific msi-specifier. > > Include a device tree example illustrating this configuration. > > Signed-off-by: Frank Li > --- > change from v15 to v16 > - new patch > --- > Documentation/devicetree/bindings/pci/pci-msi.txt | 51 +++++++++++++++++++++++ > 1 file changed, 51 insertions(+) Please don't add to .txt files. Rob