coresight tmc: Detect support for scatter gather

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The SG unit in the TMC has been removed in Coresight SoC-600.
This is however advertised by DEVID:Bit 24 = 0b1. On the
previous generation, the bit is RES0, hence we can rely on the
DEVID to detect the support.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Suzuki K Poulose 2017-08-02 10:22:12 -06:00 • committed by Greg Kroah-Hartman

parent 2884132ae8

commit 2e21934568

2 changed files with 7 additions and 0 deletions

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2

drivers/hwtracing/coresight/coresight-tmc.c

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5

drivers/hwtracing/coresight/coresight-tmc.h

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