coresight: ete: Add support for ETE tracing

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Add ETE as one of the supported device types we support
with ETM4x driver. The devices are named following the
existing convention as ete<N>.

ETE mandates that the trace resource status register is programmed
before the tracing is turned on. For the moment simply write to
it indicating TraceActive.

Cc: Mike Leach <mike.leach@linaro.org>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210405164307.1720226-14-suzuki.poulose@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

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Suzuki K Poulose 2021-04-05 17:43:00 +01:00 • committed by Mathieu Poirier

parent 3e666ad0f8

commit 35e1c9163e

4 changed files with 78 additions and 21 deletions

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10

drivers/hwtracing/coresight/Kconfig

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58

drivers/hwtracing/coresight/coresight-etm4x-core.c

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19

drivers/hwtracing/coresight/coresight-etm4x-sysfs.c

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12

drivers/hwtracing/coresight/coresight-etm4x.h

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