linux-kernel - Re: [PATCH v3 08/11] PCI: imx: Config look up table(LUT) to support MSI ITS and IOMMU for i.MX95

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Message-ID: <20240429150600.GB1709920-robh@kernel.org>
Date: Mon, 29 Apr 2024 10:06:00 -0500
From: Rob Herring <robh@...nel.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: Frank Li <Frank.Li@....com>, Richard Zhu <hongxing.zhu@....com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	NXP Linux Team <linux-imx@....com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-pci@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v3 08/11] PCI: imx: Config look up table(LUT) to support
 MSI ITS and IOMMU for i.MX95

On Sat, Apr 27, 2024 at 05:06:43PM +0530, Manivannan Sadhasivam wrote:
> PCI: imx6: Add support for configuring BDF to SID mapping for i.MX95
> 
> On Tue, Apr 02, 2024 at 10:33:44AM -0400, Frank Li wrote:
> > i.MX95 need config LUT to convert bpf to stream id. IOMMU and ITS use the
> 
> Did you mean BDF? Here and everywhere.
> 
> > same stream id. Check msi-map and smmu-map and make sure the same PCI bpf
> > map to the same stream id. Then config LUT related registers.
> > 
> 
> These DT properties not documented in the binding.

They are in the common binding. 

Rob