linux-kernel - [PATCH 3/3] arm64: dts: imx95: add SMMU support for NETC

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Message-Id: <20250528083433.3861625-4-wei.fang@nxp.com>
Date: Wed, 28 May 2025 16:34:33 +0800
From: Wei Fang <wei.fang@....com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	Frank.Li@....com
Cc: devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] arm64: dts: imx95: add SMMU support for NETC

The i.MX95 NETC supports SMMU, so add SMMU support.

Signed-off-by: Wei Fang <wei.fang@....com>
---
 arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts | 8 ++++++++
 arch/arm64/boot/dts/freescale/imx95.dtsi          | 8 ++++++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
index 9f4d0899a94d..e9a5fb36f5d0 100644
--- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
@@ -494,6 +494,14 @@ &netc_bus0 {
 		  <0x60 &its 0x66 0x1>, //ENETC1 VF1
 		  <0x80 &its 0x64 0x1>, //ENETC2 PF
 		  <0xc0 &its 0x67 0x1>;
+	iommu-map = <0x0 &smmu 0x20 0x1>,
+		    <0x10 &smmu 0x21 0x1>,
+		    <0x20 &smmu 0x22 0x1>,
+		    <0x40 &smmu 0x23 0x1>,
+		    <0x50 &smmu 0x25 0x1>,
+		    <0x60 &smmu 0x26 0x1>,
+		    <0x80 &smmu 0x24 0x1>,
+		    <0xc0 &smmu 0x27 0x1>;
 };
 
 &netc_emdio {
diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi b/arch/arm64/boot/dts/freescale/imx95.dtsi
index 632631a29112..32a91d7b51e5 100644
--- a/arch/arm64/boot/dts/freescale/imx95.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
@@ -1861,6 +1861,14 @@ netc_bus0: pcie@...00000 {
 					  <0x90 &its 0x65 0x1>, //ENETC2 VF0
 					  <0xa0 &its 0x66 0x1>, //ENETC2 VF1
 					  <0xc0 &its 0x67 0x1>; //NETC Timer
+				iommu-map = <0x0 &smmu 0x20 0x1>,
+					    <0x10 &smmu 0x21 0x1>,
+					    <0x20 &smmu 0x22 0x1>,
+					    <0x40 &smmu 0x23 0x1>,
+					    <0x80 &smmu 0x24 0x1>,
+					    <0x90 &smmu 0x25 0x1>,
+					    <0xa0 &smmu 0x26 0x1>,
+					    <0xc0 &smmu 0x27 0x1>;
 					 /* ENETC0~2 and Timer BAR0 - non-prefetchable memory */
 				ranges = <0x82000000 0x0 0x4cc00000  0x0 0x4cc00000  0x0 0xe0000
 					 /* Timer BAR2 - prefetchable memory */
-- 
2.34.1