[deliverable/linux.git] / Documentation / devicetree / bindings / iommu / rockchip,iommu.txt

Rockchip IOMMU
==============

A Rockchip DRM iommu translates io virtual addresses to physical addresses for
its master device.  Each slave device is bound to a single master device, and
shares its clocks, power domain and irq.

Required properties:
- compatible      : Should be "rockchip,iommu"
- reg             : Address space for the configuration registers
- interrupts      : Interrupt specifier for the IOMMU instance
- interrupt-names : Interrupt name for the IOMMU instance
- #iommu-cells    : Should be <0>.  This indicates the iommu is a
                    "single-master" device, and needs no additional information
                    to associate with its master device.  See:
                    Documentation/devicetree/bindings/iommu/iommu.txt

Example:

	vopl_mmu: iommu@ff940300 {
		compatible = "rockchip,iommu";
		reg = <0xff940300 0x100>;
		interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-names = "vopl_mmu";
		#iommu-cells = <0>;
	};
Commit	Line	Data
656d7077 DK	1	Rockchip IOMMU
	2	==============
	3
	4	A Rockchip DRM iommu translates io virtual addresses to physical addresses for
	5	its master device. Each slave device is bound to a single master device, and
	6	shares its clocks, power domain and irq.
	7
	8	Required properties:
	9	- compatible : Should be "rockchip,iommu"
	10	- reg : Address space for the configuration registers
	11	- interrupts : Interrupt specifier for the IOMMU instance
	12	- interrupt-names : Interrupt name for the IOMMU instance
	13	- #iommu-cells : Should be <0>. This indicates the iommu is a
	14	"single-master" device, and needs no additional information
	15	to associate with its master device. See:
	16	Documentation/devicetree/bindings/iommu/iommu.txt
	17
	18	Example:
	19
	20	vopl_mmu: iommu@ff940300 {
	21	compatible = "rockchip,iommu";
	22	reg = <0xff940300 0x100>;
	23	interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
	24	interrupt-names = "vopl_mmu";
	25	#iommu-cells = <0>;
	26	};