• Suzuki K. Poulose's avatar
    arm-cci: Add CCI-500 PMU support · a95791ef
    Suzuki K. Poulose authored
    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: default avatarSuzuki K. Poulose <suzuki.poulose@arm.com>
    Acked-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    a95791ef
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