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| author | Suzuki K. Poulose <suzuki.poulose@arm.com> | 2015-05-26 11:53:15 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2015-05-29 16:43:51 +0200 |
| commit | a95791efa72a08d3824713a75235d0407c0715dc (patch) | |
| tree | 0d21aded97664e3911753c90a485d00e56681faf /Documentation/devicetree/bindings/arm | |
| parent | arm-cci: Sanitise CCI400 PMU driver specific code (diff) | |
| download | linux-a95791efa72a08d3824713a75235d0407c0715dc.tar.xz linux-a95791efa72a08d3824713a75235d0407c0715dc.zip | |
arm-cci: Add CCI-500 PMU support
CCI-500 provides 8 event counters which can count any of the
supported events independently. The PMU event id is a 9-bit
value made of two parts.
bits [8:5] - Source port
0x0-0x6 Slave Ports
0x8-0xD Master Ports
0xf Global Events to CCI
0x7,0xe Reserved
bits [0:4] - Event code (specific to each type of port)
The generic CCI-500 controlling interface remains the same with CCI-400.
However there are some differences in the PMU event counters.
- No cycle counter
- Upto 8 counters(4 in CCI-400)
- Each counter area is 64K(4K in CCI400)
- The counter0 starts at offset 0x10000 from the base of CCI
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/cci.txt | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/cci.txt b/Documentation/devicetree/bindings/arm/cci.txt index 3c5c631328d3..aef1d200a9b2 100644 --- a/Documentation/devicetree/bindings/arm/cci.txt +++ b/Documentation/devicetree/bindings/arm/cci.txt @@ -31,8 +31,9 @@ specific to ARM. - compatible Usage: required Value type: <string> - Definition: must be set to + Definition: must contain one of the following: "arm,cci-400" + "arm,cci-500" - reg Usage: required @@ -99,6 +100,7 @@ specific to ARM. "arm,cci-400-pmu,r1" "arm,cci-400-pmu" - DEPRECATED, permitted only where OS has secure acces to CCI registers + "arm,cci-500-pmu,r0" - reg: Usage: required Value type: Integer cells. A register entry, expressed |