From: Jie Gan <jie.gan@oss.qualcomm.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>,
Mike Leach <mike.leach@linaro.org>,
James Clark <james.clark@linaro.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>
Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH v3 0/3] add sysfs nodes to configure TPDA's registers
Date: Wed, 27 Aug 2025 18:55:42 +0800 [thread overview]
Message-ID: <20250827105545.7140-1-jie.gan@oss.qualcomm.com> (raw)
Patchset 1 introduces configuration of the cross-trigger registers with
appropriate values to enable proper generation of cross-trigger packets.
Patchset 2 introduces a logic to configure the TPDA_SYNCR register,
which determines the frequency of ASYNC packet generation. These packets
assist userspace tools in accurately identifying each valid packet.
Patchset 3 introduces a sysfs node to initiate a flush request for the
specific port, forcing the data to synchronize and be transmitted to the
sink device.
Changes in V3:
1. Optimizing codes according to James's comment.
Link to V2 - https://lore.kernel.org/all/20250827042042.6786-1-jie.gan@oss.qualcomm.com/
Changes in V2:
1. Refactoring the code based on James's comment for optimization.
Link to V1 - https://lore.kernel.org/all/20250826070150.5603-1-jie.gan@oss.qualcomm.com/
Tao Zhang (3):
coresight: tpda: add sysfs nodes for tpda cross-trigger configuration
coresight: tpda: add logic to configure TPDA_SYNCR register
coresight: tpda: add sysfs node to flush specific port
.../testing/sysfs-bus-coresight-devices-tpda | 50 ++++
drivers/hwtracing/coresight/coresight-tpda.c | 278 ++++++++++++++++++
drivers/hwtracing/coresight/coresight-tpda.h | 33 ++-
3 files changed, 360 insertions(+), 1 deletion(-)
create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-tpda
--
2.34.1
next reply other threads:[~2025-08-27 11:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-27 10:55 Jie Gan [this message]
2025-08-27 10:55 ` [PATCH v3 1/3] coresight: tpda: add sysfs nodes for tpda cross-trigger configuration Jie Gan
2025-08-27 10:55 ` [PATCH v3 2/3] coresight: tpda: add logic to configure TPDA_SYNCR register Jie Gan
2025-08-27 10:55 ` [PATCH v3 3/3] coresight: tpda: add sysfs node to flush specific port Jie Gan
2025-08-27 11:59 ` [PATCH v3 0/3] add sysfs nodes to configure TPDA's registers James Clark
2025-09-15 2:12 ` Jie Gan
2025-10-13 8:25 ` Jie Gan
2025-10-27 1:14 ` Jie Gan
2025-10-27 9:29 ` Suzuki K Poulose
2025-10-28 1:37 ` Jie Gan
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