Hi Greg,
On 3/27/2023 5:13 PM, Greg Kroah-Hartman wrote:
On Fri, Mar 24, 2023 at 02:16:08PM +0800, Hao Zhang wrote:
Add documentation for Coresight Dummy Trace under trace/coresight.
Signed-off-by: Hao Zhang <quic_hazha@xxxxxxxxxxx>
---
.../trace/coresight/coresight-dummy.rst | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/trace/coresight/coresight-dummy.rst
diff --git a/Documentation/trace/coresight/coresight-dummy.rst b/Documentation/trace/coresight/coresight-dummy.rst
new file mode 100644
index 000000000000..819cabab8623
--- /dev/null
+++ b/Documentation/trace/coresight/coresight-dummy.rst
@@ -0,0 +1,58 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=============================
+Coresight Dummy Trace Module
+=============================
+
+ :Author: Hao Zhang <quic_hazha@xxxxxxxxxxx>
+ :Date: March 2023
+
+Introduction
+---------------------------
+
+Coresight Dummy Trace Module is for the specific devices that HLOS don't
+have permission to access or configure. Such as Coresight sink EUD, some
+TPDMs etc. So there need driver to register dummy devices as Coresight
+devices. Provide Coresight API for dummy device operations, such as
+enabling and disabling dummy devices. Build the Coresight path for dummy
+sink or dummy source for debugging.
+
+Sysfs files and directories
+---------------------------
+
+Root: ``/sys/bus/coresight/devices/dummy<N>``
sysfs files are documented in Documentation/ABI/ not in random .rst
files, sorry. Please use the correct format described there, not a
random one like this :)
thanks,
greg k-h
Thanks for your review, I will correct the format in the next version of
patch.
Thanks,
Hao
