FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/remoteproc/ti,davinci-rproc.txt

     TI Davinci DSP devices
     =======================
     
     Binding status: Unstable - Subject to changes for DT representation of clocks
                                and resets
     
     The TI Davinci family of SoCs usually contains a TI DSP Core sub-system that
     is used to offload some of the processor-intensive tasks or algorithms, for
     achieving various system level goals.
    
    The processor cores in the sub-system usually contain additional sub-modules
    like L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory
    controller, a dedicated local power/sleep controller etc. The DSP processor
    core used in Davinci SoCs is usually a C674x DSP CPU.
    
    DSP Device Node:
    ================
    Each DSP Core sub-system is represented as a single DT node.
    
    Required properties:
    --------------------
    The following are the mandatory properties:
    
    - compatible:           Should be one of the following,
                                "ti,da850-dsp" for DSPs on OMAP-L138 SoCs
    
    - reg:                  Should contain an entry for each value in 'reg-names'.
                            Each entry should have the memory region's start address
                            and the size of the region, the representation matching
                            the parent node's '#address-cells' and '#size-cells' values.
    
    - reg-names:            Should contain strings with the following names, each
                            representing a specific internal memory region or a
                            specific register space,
                                 "l2sram", "l1pram", "l1dram", "host1cfg", "chipsig_base"
    
    - interrupts:           Should contain the interrupt number used to receive the
                            interrupts from the DSP. The value should follow the
                            interrupt-specifier format as dictated by the
                            'interrupt-parent' node.
    
    - memory-region:        phandle to the reserved memory node to be associated
                            with the remoteproc device. The reserved memory node
                            can be a CMA memory node, and should be defined as
                            per the bindings in
                            Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt
    
    
    Example:
    --------
    
            /* DSP Reserved Memory node */
            reserved-memory {
                    #address-cells = <1>;
                    #size-cells = <1>;
                    ranges;
    
                    dsp_memory_region: dsp-memory@c3000000 {
                            compatible = "shared-dma-pool";
                            reg = <0xc3000000 0x1000000>;
                            reusable;
                    };
            };
    
            /* DSP node */
            {
                    dsp: dsp@11800000 {
                            compatible = "ti,da850-dsp";
                            reg = <0x11800000 0x40000>,
                                  <0x11e00000 0x8000>,
                                  <0x11f00000 0x8000>,
                                  <0x01c14044 0x4>,
                                  <0x01c14174 0x8>;
                            reg-names = "l2sram", "l1pram", "l1dram", "host1cfg",
                                        "chipsig";
                            interrupt-parent = <&intc>;
                            interrupts = <28>;
                            memory-region = <&dsp_memory_region>;
                    };
            };

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