Documentation: coresight: trbe: Sysfs ABI description

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

Add sysfs ABI documentation for the TRBE devices.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
[ Split from the TRBE driver patch ]
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210405164307.1720226-19-suzuki.poulose@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

authored by

Anshuman Khandual and committed by

Mathieu Poirier 5 years ago b20f34ae 3fbf7f01

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Documentation

ABI

testing

sysfs-bus-coresight-devices-trbe

+14

Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe

··· 1 + What: /sys/bus/coresight/devices/trbe<cpu>/align 2 + Date: March 2021 3 + KernelVersion: 5.13 4 + Contact: Anshuman Khandual <anshuman.khandual@arm.com> 5 + Description: (Read) Shows the TRBE write pointer alignment. This value 6 + is fetched from the TRBIDR register. 7 + 8 + What: /sys/bus/coresight/devices/trbe<cpu>/flag 9 + Date: March 2021 10 + KernelVersion: 5.13 11 + Contact: Anshuman Khandual <anshuman.khandual@arm.com> 12 + Description: (Read) Shows if TRBE updates in the memory are with access 13 + and dirty flag updates as well. This value is fetched from 14 + the TRBIDR register.