1NVIDIA Tegra20 MC(Memory Controller) 2 3Required properties: 4- compatible : "nvidia,tegra20-mc-gart" 5- reg : Should contain 2 register ranges: physical base address and length of 6 the controller's registers and the GART aperture respectively. 7- clocks: Must contain an entry for each entry in clock-names. 8 See ../clocks/clock-bindings.txt for details. 9- clock-names: Must include the following entries: 10 - mc: the module's clock input 11- interrupts : Should contain MC General interrupt. 12- #reset-cells : Should be 1. This cell represents memory client module ID. 13 The assignments may be found in header file <dt-bindings/memory/tegra20-mc.h> 14 or in the TRM documentation. 15- #iommu-cells: Should be 0. This cell represents the number of cells in an 16 IOMMU specifier needed to encode an address. GART supports only a single 17 address space that is shared by all devices, therefore no additional 18 information needed for the address encoding. 19 20Example: 21 mc: memory-controller@7000f000 { 22 compatible = "nvidia,tegra20-mc-gart"; 23 reg = <0x7000f000 0x400 /* controller registers */ 24 0x58000000 0x02000000>; /* GART aperture */ 25 clocks = <&tegra_car TEGRA20_CLK_MC>; 26 clock-names = "mc"; 27 interrupts = <GIC_SPI 77 0x04>; 28 #reset-cells = <1>; 29 #iommu-cells = <0>; 30 }; 31 32 video-codec@6001a000 { 33 compatible = "nvidia,tegra20-vde"; 34 ... 35 resets = <&mc TEGRA20_MC_RESET_VDE>; 36 iommus = <&mc>; 37 }; 38