linux-kernel - [PATCH v1 0/3] coresight: Add reserve trace id support

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Date: Wed, 15 May 2024 19:56:39 -0700
From: Mao Jinlong <quic_jinlmao@...cinc.com>
To: Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach
	<mike.leach@...aro.org>, James Clark <james.clark@....com>,
        Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>,
        Mao Jinlong <quic_jinlmao@...cinc.com>,
        "Alexander
 Shishkin" <alexander.shishkin@...ux.intel.com>
CC: <coresight@...ts.linaro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>,
        Tingwei Zhang <quic_tingweiz@...cinc.com>,
        Yuanfang Zhang <quic_yuanfang@...cinc.com>,
        Tao Zhang
	<quic_taozha@...cinc.com>,
        songchai <quic_songchai@...cinc.com>
Subject: [PATCH v1 0/3] coresight: Add reserve trace id support

Some HW has static trace id which cannot be changed via software programming.
For this case, configure the trace id in device tree with
"trace-id = <xxx>", and call coresight_trace_id_reserve_system_id in
device probe function. The id will be reserved for the HW all the time
if the device is probed.

Mao Jinlong (3):
  dt-bindings: arm: Add trace-id for coresight dummy source
  coresight: Add reserve trace id support
  coresight: dummy: Add reserve atid support for dummy source

 .../sysfs-bus-coresight-devices-dummy-source  | 15 +++++
 .../arm/arm,coresight-dummy-source.yaml       |  6 ++
 drivers/hwtracing/coresight/coresight-dummy.c | 56 +++++++++++++++++--
 .../hwtracing/coresight/coresight-platform.c  | 26 +++++++++
 .../hwtracing/coresight/coresight-trace-id.c  | 24 ++++++++
 .../hwtracing/coresight/coresight-trace-id.h  | 11 ++++
 include/linux/coresight.h                     |  1 +
 7 files changed, 135 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-dummy-source

-- 
2.41.0