tjh.dev
Linux kernel mirror (for testing)
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1DDR PHY Front End (DPFE) for Broadcom STB
2=========================================
3
4DPFE and the DPFE firmware provide an interface for the host CPU to
5communicate with the DCPU, which resides inside the DDR PHY.
6
7There are three memory regions for interacting with the DCPU. These are
8specified in a single reg property.
9
10Required properties:
11 - compatible: must be "brcm,bcm7271-dpfe-cpu", "brcm,bcm7268-dpfe-cpu"
12 or "brcm,dpfe-cpu"
13 - reg: must reference three register ranges
14 - start address and length of the DCPU register space
15 - start address and length of the DCPU data memory space
16 - start address and length of the DCPU instruction memory space
17 - reg-names: must contain "dpfe-cpu", "dpfe-dmem", and "dpfe-imem";
18 they must be in the same order as the register declarations
19
20Example:
21 dpfe_cpu0: dpfe-cpu@f1132000 {
22 compatible = "brcm,bcm7271-dpfe-cpu", "brcm,dpfe-cpu";
23 reg = <0xf1132000 0x180
24 0xf1134000 0x1000
25 0xf1138000 0x4000>;
26 reg-names = "dpfe-cpu", "dpfe-dmem", "dpfe-imem";
27 };