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TRCSSPCICR<n> is present only if all of the following are true: TRCIDR4.NUMSSCC > n. TRCIDR4.NUMPC > 0b0000 . TRCSSCSR<n>.PC == 0b1 Add a helper function to check all the conditions. Link: https://lore.kernel.org/r/20210110224850.1880240-2-suzuki.poulose@arm.com Cc: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-4-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>