From: Markus Mayer <mmayer@xxxxxxxxxxxx>
Provide bindings for the Broadcom STB DDR PHY Front End (DPFE).
Signed-off-by: Markus Mayer <mmayer@xxxxxxxxxxxx>
---
.../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
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