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Diffstat (limited to 'Documentation/devicetree/bindings/arm/cci.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/cci.txt | 60 |
1 files changed, 56 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/arm/cci.txt b/Documentation/devicetree/bindings/arm/cci.txt index 92d36e2aa87..f28d82bbbc5 100644 --- a/Documentation/devicetree/bindings/arm/cci.txt +++ b/Documentation/devicetree/bindings/arm/cci.txt @@ -36,14 +36,18 @@ specific to ARM. - reg Usage: required - Value type: <prop-encoded-array> + Value type: Integer cells. A register entry, expressed as a pair + of cells, containing base and size. Definition: A standard property. Specifies base physical address of CCI control registers common to all interfaces. - ranges: Usage: required - Value type: <prop-encoded-array> + Value type: Integer cells. An array of range entries, expressed + as a tuple of cells, containing child address, + parent address and the size of the region in the + child address space. Definition: A standard property. Follow rules in the ePAPR for hierarchical bus addressing. CCI interfaces addresses refer to the parent node addressing @@ -74,11 +78,49 @@ specific to ARM. - reg: Usage: required - Value type: <prop-encoded-array> + Value type: Integer cells. A register entry, expressed + as a pair of cells, containing base and + size. Definition: the base address and size of the corresponding interface programming registers. + - CCI PMU node + + Parent node must be CCI interconnect node. + + A CCI pmu node must contain the following properties: + + - compatible + Usage: required + Value type: <string> + Definition: must be "arm,cci-400-pmu" + + - reg: + Usage: required + Value type: Integer cells. A register entry, expressed + as a pair of cells, containing base and + size. + Definition: the base address and size of the + corresponding interface programming + registers. + + - interrupts: + Usage: required + Value type: Integer cells. Array of interrupt specifier + entries, as defined in + ../interrupt-controller/interrupts.txt. + Definition: list of counter overflow interrupts, one per + counter. The interrupts must be specified + starting with the cycle counter overflow + interrupt, followed by counter0 overflow + interrupt, counter1 overflow interrupt,... + ,counterN overflow interrupt. + + The CCI PMU has an interrupt signal for each + counter. The number of interrupts must be + equal to the number of counters. + * CCI interconnect bus masters Description: masters in the device tree connected to a CCI port @@ -144,7 +186,7 @@ Example: #address-cells = <1>; #size-cells = <1>; reg = <0x0 0x2c090000 0 0x1000>; - ranges = <0x0 0x0 0x2c090000 0x6000>; + ranges = <0x0 0x0 0x2c090000 0x10000>; cci_control0: slave-if@1000 { compatible = "arm,cci-400-ctrl-if"; @@ -163,6 +205,16 @@ Example: interface-type = "ace"; reg = <0x5000 0x1000>; }; + + pmu@9000 { + compatible = "arm,cci-400-pmu"; + reg = <0x9000 0x5000>; + interrupts = <0 101 4>, + <0 102 4>, + <0 103 4>, + <0 104 4>, + <0 105 4>; + }; }; This CCI node corresponds to a CCI component whose control registers sits |