FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/memory-controllers/nvidia,tegra20-mc.txt

     NVIDIA Tegra20 MC(Memory Controller)
     
     Required properties:
     - compatible : "nvidia,tegra20-mc-gart"
     - reg : Should contain 2 register ranges: physical base address and length of
       the controller's registers and the GART aperture respectively.
     - clocks: Must contain an entry for each entry in clock-names.
       See ../clocks/clock-bindings.txt for details.
     - clock-names: Must include the following entries:
      - mc: the module's clock input
    - interrupts : Should contain MC General interrupt.
    - #reset-cells : Should be 1. This cell represents memory client module ID.
      The assignments may be found in header file <dt-bindings/memory/tegra20-mc.h>
      or in the TRM documentation.
    - #iommu-cells: Should be 0. This cell represents the number of cells in an
      IOMMU specifier needed to encode an address. GART supports only a single
      address space that is shared by all devices, therefore no additional
      information needed for the address encoding.
    - #interconnect-cells : Should be 1. This cell represents memory client.
      The assignments may be found in header file <dt-bindings/memory/tegra20-mc.h>.
    
    Example:
            mc: memory-controller@7000f000 {
                    compatible = "nvidia,tegra20-mc-gart";
                    reg = <0x7000f000 0x400         /* controller registers */
                           0x58000000 0x02000000>;  /* GART aperture */
                    clocks = <&tegra_car TEGRA20_CLK_MC>;
                    clock-names = "mc";
                    interrupts = <GIC_SPI 77 0x04>;
                    #reset-cells = <1>;
                    #iommu-cells = <0>;
                    #interconnect-cells = <1>;
            };
    
            video-codec@6001a000 {
                    compatible = "nvidia,tegra20-vde";
                    ...
                    resets = <&mc TEGRA20_MC_RESET_VDE>;
                    iommus = <&mc>;
            };

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