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authorMarkus Mayer <mmayer@broadcom.com>2017-08-24 16:36:25 -0700
committerFlorian Fainelli <f.fainelli@gmail.com>2017-09-18 11:59:38 -0700
commit367f15d3130e0d6c6818a4ace2463914e8c78e2c (patch)
tree011cd51a56149442b7b6e213a665bb47501efe5c /Documentation
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
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dt-bindings: Add bindings for Broadcom STB DRAM Sensors
Provide bindings for the Broadcom STB DDR PHY Front End (DPFE). Signed-off-by: Markus Mayer <mmayer@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Diffstat (limited to 'Documentation')
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+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. These are
+specified in a single reg property.
+
+Required properties:
+ - compatible: must be "brcm,bcm7271-dpfe-cpu", "brcm,bcm7268-dpfe-cpu"
+ or "brcm,dpfe-cpu"
+ - reg: must reference three register ranges
+ - start address and length of the DCPU register space
+ - start address and length of the DCPU data memory space
+ - start address and length of the DCPU instruction memory space
+ - reg-names: must contain "dpfe-cpu", "dpfe-dmem", and "dpfe-imem";
+ they must be in the same order as the register declarations
+
+Example:
+ dpfe_cpu0: dpfe-cpu@f1132000 {
+ compatible = "brcm,bcm7271-dpfe-cpu", "brcm,dpfe-cpu";
+ reg = <0xf1132000 0x180
+ 0xf1134000 0x1000
+ 0xf1138000 0x4000>;
+ reg-names = "dpfe-cpu", "dpfe-dmem", "dpfe-imem";
+ };
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