linux-kernel - [PATCHv4 1/2] arm64: dts: stratix10: Add Stratix10 SMMU support

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Message-Id: <1538773020-27784-2-git-send-email-thor.thayer@linux.intel.com>
Date:   Fri,  5 Oct 2018 15:56:59 -0500
From:   thor.thayer@...ux.intel.com
To:     dinguyen@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        will.deacon@....com, robin.murphy@....com, joro@...tes.org,
        aisheng.dong@....com, sboyd@...nel.org
Cc:     vivek.gautam@...eaurora.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org,
        Thor Thayer <thor.thayer@...ux.intel.com>
Subject: [PATCHv4 1/2] arm64: dts: stratix10: Add Stratix10 SMMU support

From: Thor Thayer <thor.thayer@...ux.intel.com>

Add SMMU support to the Stratix10 Device Tree which
includes adding the SMMU node and adding IOMMU stream
ids to the SMMU peripherals.

Signed-off-by: Thor Thayer <thor.thayer@...ux.intel.com>
---
v4  Add clock-name since clk_bulk_get() needs name
    for clock.
v3  Remove bindings changes since not adding new structure.
    Remove new compatible string - use default "arm,mmu-500"
v2  Add bindings changes and compatible string for SOCFPGA.
---
 arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi | 29 +++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
index d033da401c26..f58f7601ab88 100644
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
@@ -137,6 +137,7 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC0_CLK>;
 			clock-names = "stmmaceth";
+			iommus = <&smmu 1>;
 			status = "disabled";
 		};
 
@@ -150,6 +151,7 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC1_CLK>;
 			clock-names = "stmmaceth";
+			iommus = <&smmu 2>;
 			status = "disabled";
 		};
 
@@ -163,6 +165,7 @@
 			reset-names = "stmmaceth", "stmmaceth-ocp";
 			clocks = <&clkmgr STRATIX10_EMAC2_CLK>;
 			clock-names = "stmmaceth";
+			iommus = <&smmu 3>;
 			status = "disabled";
 		};
 
@@ -273,6 +276,7 @@
 			clocks = <&clkmgr STRATIX10_L4_MP_CLK>,
 				 <&clkmgr STRATIX10_SDMMC_CLK>;
 			clock-names = "biu", "ciu";
+			iommus = <&smmu 5>;
 			status = "disabled";
 		};
 
@@ -307,6 +311,29 @@
 			altr,modrst-offset = <0x20>;
 		};
 
+		smmu: iommu@...00000 {
+			compatible = "arm,mmu-500", "arm,smmu-v2";
+			reg = <0xfa000000 0x40000>;
+			#global-interrupts = <2>;
+			#iommu-cells = <1>;
+			clocks = <&clkmgr STRATIX10_L4_MAIN_CLK>;
+			clock-names = "iommu";
+			interrupt-parent = <&intc>;
+			interrupts = <0 128 4>,	/* Global Secure Fault */
+				<0 129 4>, /* Global Non-secure Fault */
+				/* Non-secure Context Interrupts (32) */
+				<0 138 4>, <0 139 4>, <0 140 4>, <0 141 4>,
+				<0 142 4>, <0 143 4>, <0 144 4>, <0 145 4>,
+				<0 146 4>, <0 147 4>, <0 148 4>, <0 149 4>,
+				<0 150 4>, <0 151 4>, <0 152 4>, <0 153 4>,
+				<0 154 4>, <0 155 4>, <0 156 4>, <0 157 4>,
+				<0 158 4>, <0 159 4>, <0 160 4>, <0 161 4>,
+				<0 162 4>, <0 163 4>, <0 164 4>, <0 165 4>,
+				<0 166 4>, <0 167 4>, <0 168 4>, <0 169 4>;
+			stream-match-mask = <0x7ff0>;
+			status = "disabled";
+		};
+
 		spi0: spi@...a4000 {
 			compatible = "snps,dw-apb-ssi";
 			#address-cells = <1>;
@@ -416,6 +443,7 @@
 			resets = <&rst USB0_RESET>, <&rst USB0_OCP_RESET>;
 			reset-names = "dwc2", "dwc2-ecc";
 			clocks = <&clkmgr STRATIX10_USB_CLK>;
+			iommus = <&smmu 6>;
 			status = "disabled";
 		};
 
@@ -428,6 +456,7 @@
 			resets = <&rst USB1_RESET>, <&rst USB1_OCP_RESET>;
 			reset-names = "dwc2", "dwc2-ecc";
 			clocks = <&clkmgr STRATIX10_USB_CLK>;
+			iommus = <&smmu 7>;
 			status = "disabled";
 		};
 
-- 
2.7.4