linux-kernel - [PATCH 4/5] arm64: dts: imx95: add PCIe's msi-map and iommu-map property

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Message-Id: <20250128211559.1582598-4-Frank.Li@nxp.com>
Date: Tue, 28 Jan 2025 16:15:58 -0500
From: Frank Li <Frank.Li@....com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	imx@...ts.linux.dev (open list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev,
	hongxing.zhu@....com
Subject: [PATCH 4/5] arm64: dts: imx95: add PCIe's msi-map and iommu-map property

Add PCIe's msi-map and iommu-map property because i.MX95 support smmu and
its.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/imx95.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index 6b8470cb3461a..2cebeda43a52d 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -1573,6 +1573,12 @@ pcie0: pcie@...00000 {
 			assigned-clock-parents = <0>, <0>,
 						 <&scmi_clk IMX95_CLK_SYSPLL1_PFD1_DIV2>;
 			power-domains = <&scmi_devpd IMX95_PD_HSIO_TOP>;
+			/* pcie0's Devid(BIT[7:6]) is 0x00, stream id(BIT[5:0]) is 0x10~0x17 */
+			msi-map = <0x0 &its 0x10 0x1>,
+				  <0x100 &its 0x11 0x7>;
+			iommu-map = <0x000 &smmu 0x10 0x1>,
+				    <0x100 &smmu 0x11 0x7>;
+			iommu-map-mask = <0x1ff>;
 			fsl,max-link-speed = <3>;
 			status = "disabled";
 		};
@@ -1640,6 +1646,14 @@ pcie1: pcie@...80000 {
 			assigned-clock-parents = <0>, <0>,
 						 <&scmi_clk IMX95_CLK_SYSPLL1_PFD1_DIV2>;
 			power-domains = <&scmi_devpd IMX95_PD_HSIO_TOP>;
+			/* pcie1's Devid(BIT[7:6]) is 0x10, stream id(BIT[5:0]) is 0x18~0x1f */
+			msi-map = <0x0 &its 0x98 0x1>,
+				  <0x100 &its 0x99 0x7>;
+			msi-map-mask = <0x1ff>;
+			/* smmu have not Devid(BIT[7:6]) */
+			iommu-map = <0x000 &smmu 0x18 0x1>,
+				    <0x100 &smmu 0x19 0x7>;
+			iommu-map-mask = <0x1ff>;
 			fsl,max-link-speed = <3>;
 			status = "disabled";
 		};
-- 
2.34.1