From: Markus Mayer <[email protected]> Provide bindings for the Broadcom STB DDR PHY Front End (DPFE).
Signed-off-by: Markus Mayer <[email protected]> --- .../devicetree/bindings/hwmon/brcmstb-dpfe.txt | 68 ++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/brcmstb-dpfe.txt diff --git a/Documentation/devicetree/bindings/hwmon/brcmstb-dpfe.txt b/Documentation/devicetree/bindings/hwmon/brcmstb-dpfe.txt new file mode 100644 index 0000000..3519197 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/brcmstb-dpfe.txt @@ -0,0 +1,68 @@ +DDR PHY Front End (DPFE) for Broadcom STB +========================================= + +DPFE and the DPFE firmware provide an interface for the host CPU to +communicate with the DCPU, which resides inside the DDR PHY. + +There are three memory regions for interacting with the DCPU. + +The DCPU Register Space +----------------------- + +Required properties: + - compatible: must be one of brcm,bcm7271-dpfe-cpu, brcm,dpfe-cpu-v12.0.0.0 + or brcm,dpfe-cpu + - reg: must reference the start address and length of the DCPU register + space + +Optional properties: + - cell-index: the index of the DPFE instance; will default to 0 if not set + +Example: + dpfe_cpu0: dpfe-cpu@f1132000 { + compatible = "brcm,bcm7271-dpfe-cpu", + "brcm,dpfe-cpu-v12.0.0.0", + "brcm,dpfe-cpu"; + reg = <0xf1132000 0x180>; + cell-index = <0>; + }; + +The DCPU Data Memory Space +-------------------------- + +Required properties: + - compatible: must be one of brcm,bcm7271-dpfe-dmem, brcm,dpfe-dmem-v12.0.0.0 + or brcm,dpfe-dmem + - reg: must reference the start address and length of the DCPU DMEM space + +Optional properties: + - cell-index: the index of the DPFE instance; will default to 0 if not set + +Example: + dpfe_dmem0: dpfe-dmem@f1134000 { + compatible = "brcm,bcm7271-dpfe-dmem", + "brcm,dpfe-dmem-v12.0.0.0", + "brcm,dpfe-dmem"; + reg = <0xf1134000 0x1000>; + cell-index = <0>; + }; + +The DCPU Instruction Memory Space +--------------------------------- + +Required properties: + - compatible: must be one of brcm,bcm7271-dpfe-imem, brcm,dpfe-imem-v12.0.0.0 + or brcm,dpfe-imem + - reg: must reference the start address and length of the DCPU IMEM space + +Optional properties: + - cell-index: the index of the DPFE instance; will default to 0 if not set + +Example: + dpfe_imem0: dpfe-imem@f1138000 { + compatible = "brcm,bcm7271-dpfe-imem", + "brcm,dpfe-imem-v12.0.0.0", + "brcm,dpfe-imem"; + reg = <0xf1138000 0x4000>; + cell-index = <0>; + }; -- 2.7.4
