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Documentation: coresight: trbe: Sysfs ABI description

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Add sysfs ABI documentation for the TRBE devices.

Cc: Mathieu Poirier <[email protected]>
Cc: Mike Leach <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: [email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
[ Split from the TRBE driver patch ]
Signed-off-by: Suzuki K Poulose <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mathieu Poirier <[email protected]>
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Anshuman Khandual authored and Mathieu Poirier committed 2021-04-06 16:05:38 -06:00
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Documentation/ABI/testing/sysfs-bus-coresight-devices-trbe
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What: /sys/bus/coresight/devices/trbe<cpu>/align
Date: March 2021
KernelVersion: 5.13
Contact: Anshuman Khandual <[email protected]>
Description: (Read) Shows the TRBE write pointer alignment. This value
is fetched from the TRBIDR register.
What: /sys/bus/coresight/devices/trbe<cpu>/flag
Date: March 2021
KernelVersion: 5.13
Contact: Anshuman Khandual <[email protected]>
Description: (Read) Shows if TRBE updates in the memory are with access
and dirty flag updates as well. This value is fetched from
the TRBIDR register.