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-rw-r--r--Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt27
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
index 869699925fd5..4bd10dd881b8 100644
--- a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
+++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
@@ -4,6 +4,7 @@ Required properties:
- compatible : Should be one of,
"ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances
"ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances
+ "ti,dra7-dsp-iommu" for DRA7xx DSP IOMMU instances
"ti,dra7-iommu" for DRA7xx IOMMU instances
- ti,hwmods : Name of the hwmod associated with the IOMMU instance
- reg : Address space for the configuration registers
@@ -19,6 +20,13 @@ Optional properties:
Should be either 8 or 32 (default: 32)
- ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing
back a bus error response on MMU faults.
+- ti,syscon-mmuconfig : Should be a pair of the phandle to the DSP_SYSTEM
+ syscon node that contains the additional control
+ register for enabling the MMU, and the MMU instance
+ number (0-indexed) within the sub-system. This property
+ is required for DSP IOMMU instances on DRA7xx SoCs. The
+ instance number should be 0 for DSP MDMA MMUs and 1 for
+ DSP EDMA MMUs.
Example:
/* OMAP3 ISP MMU */
@@ -30,3 +38,22 @@ Example:
ti,hwmods = "mmu_isp";
ti,#tlb-entries = <8>;
};
+
+ /* DRA74x DSP2 MMUs */
+ mmu0_dsp2: mmu@41501000 {
+ compatible = "ti,dra7-dsp-iommu";
+ reg = <0x41501000 0x100>;
+ interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "mmu0_dsp2";
+ #iommu-cells = <0>;
+ ti,syscon-mmuconfig = <&dsp2_system 0x0>;
+ };
+
+ mmu1_dsp2: mmu@41502000 {
+ compatible = "ti,dra7-dsp-iommu";
+ reg = <0x41502000 0x100>;
+ interrupts = <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>;
+ ti,hwmods = "mmu1_dsp2";
+ #iommu-cells = <0>;
+ ti,syscon-mmuconfig = <&dsp2_system 0x1>;
+ };