[v8,14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI

Message ID	20200113213149.25599-15-mike.leach@linaro.org
State	New
Headers	show Return-Path: <SRS0=lLbR=3C=vger.kernel.org=devicetree-owner@kernel.org> From: Mike Leach <mike.leach@linaro.org> To: mike.leach@linaro.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, coresight@lists.linaro.org, linux-doc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, mathieu.poirier@linaro.org, suzuki.poulose@arm.com, robh+dt@kernel.org, maxime@cerno.tech, liviu.dudau@arm.com, sudeep.holla@arm.com, lorenzo.pieralisi@arm.com, agross@kernel.org, corbet@lwn.net Subject: [PATCH v8 14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI Date: Mon, 13 Jan 2020 21:31:48 +0000 Message-Id: <20200113213149.25599-15-mike.leach@linaro.org> In-Reply-To: <20200113213149.25599-1-mike.leach@linaro.org> References: <20200113213149.25599-1-mike.leach@linaro.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk
Series	CoreSight CTI Driver \| expand [v8,00/15] CoreSight CTI Driver [v8,02/15] coresight: cti: Add sysfs coresight mgmt reg access. [v8,05/15] dt-bindings: arm: Adds CoreSight CTI hardware definitions. [v8,06/15] coresight: cti: Add device tree support for v8 arch CTI [v8,07/15] coresight: cti: Add device tree support for custom CTI. [v8,08/15] coresight: cti: Enable CTI associated with devices. [v8,11/15] dt-bindings: arm: Juno platform - add CTI entries to device tree. [v8,14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI

diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti new file mode 100644 index 000000000000..5ed54d196a17 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti @@ -0,0 +1,221 @@ +What: /sys/bus/coresight/devices/<cti-name>/enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable/Disable the CTI hardware. + +What: /sys/bus/coresight/devices/<cti-name>/ctmid +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Display the associated CTM ID + +What: /sys/bus/coresight/devices/<cti-name>/nr_trigger_cons +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Number of devices connected to triggers on this CTI + +What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/name +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Name of connected device <N> + +What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/in_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Input trigger signals from connected device <N> + +What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/in_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the input trigger signals + from connected device <N> + +What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/out_signals +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Output trigger signals to connected device <N> + +What: /sys/bus/coresight/devices/<cti-name>/triggers<N>/out_types +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Functional types for the output trigger signals + to connected device <N> + +What: /sys/bus/coresight/devices/<cti-name>/regs/inout_sel +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Select the index for inen and outen registers. + +What: /sys/bus/coresight/devices/<cti-name>/regs/inen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIINEN register selected by inout_sel. + +What: /sys/bus/coresight/devices/<cti-name>/regs/outen +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write the CTIOUTEN register selected by inout_sel. + +What: /sys/bus/coresight/devices/<cti-name>/regs/gate +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write CTIGATE register. + +What: /sys/bus/coresight/devices/<cti-name>/regs/asicctl +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Read or write ASICCTL register. + +What: /sys/bus/coresight/devices/<cti-name>/regs/intack +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write the INTACK register. + +What: /sys/bus/coresight/devices/<cti-name>/regs/appset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Set CTIAPPSET register to activate channel. Read back to + determine current value of register. + +What: /sys/bus/coresight/devices/<cti-name>/regs/appclear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPCLEAR register to deactivate channel. + +What: /sys/bus/coresight/devices/<cti-name>/regs/apppulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Write APPPULSE to pulse a channel active for one clock + cycle. + +What: /sys/bus/coresight/devices/<cti-name>/regs/chinstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) Read current status of channel inputs. + +What: /sys/bus/coresight/devices/<cti-name>/regs/choutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of channel outputs. + +What: /sys/bus/coresight/devices/<cti-name>/regs/triginstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of input trigger signals + +What: /sys/bus/coresight/devices/<cti-name>/regs/trigoutstatus +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) read current status of output trigger signals. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trigin_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI input trigger to a CTM channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trigin_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI input trigger from a CTM channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_attach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Attach a CTI output trigger to a CTM channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_detach +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Detach a CTI output trigger from a CTM channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_gate_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable CTIGATE for single channel (W) or list enabled + channels through the gate (R). + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_gate_disable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Disable CTIGATE for single channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_set +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Activate a single channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_clear +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Deactivate a single channel. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_pulse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Pulse a single channel - activate for a single clock cycle. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trigout_filtered +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) List of output triggers filtered across all connections. + +What: /sys/bus/coresight/devices/<cti-name>/channels/trig_filter_enable +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Enable or disable trigger output signal filtering. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_inuse +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with at least one attached trigger signal. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_free +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (R) show channels with no attached trigger signals. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_view +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (RW) Write channel number to select a channel to view, read to + see triggers attached to selected channel on this CTI. + +What: /sys/bus/coresight/devices/<cti-name>/channels/chan_xtrigs_reset +Date: Jan 2020 +KernelVersion 5.6 +Contact: Mike Leach or Mathieu Poirier +Description: (W) Clear all channel / trigger programming.

[v8,14/15] docs: sysfs: coresight: Add sysfs ABI documentation for CTI

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