[PATCH v4 1/4] coresight: etm4x: docs: Update ABI doc for new sysfs name scheme.

Recent updates to CoreSight drivers have changed the component naming schema used in sysfs.

This updates the ABI document to reflect the new naming schema.

Reviewed-by: Mathieu Poirier mathieu.poirier@linaro.org Signed-off-by: Mike Leach mike.leach@linaro.org --- .../testing/sysfs-bus-coresight-devices-etm4x | 136 +++++++++--------- 1 file changed, 68 insertions(+), 68 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x index 36258bc1b473..9290010e973e 100644 --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x @@ -1,4 +1,4 @@ -What: /sys/bus/coresight/devices/<memory_map>.etm/enable_source +What: /sys/bus/coresight/devices/etm<N>/enable_source Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -8,82 +8,82 @@ Description: (RW) Enable/disable tracing on this specific trace entiry. of coresight components linking the source to the sink is configured and managed automatically by the coresight framework.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cpu +What: /sys/bus/coresight/devices/etm<N>/cpu Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) The CPU this tracing entity is associated with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_pe_cmp +What: /sys/bus/coresight/devices/etm<N>/nr_pe_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of PE comparator inputs that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_addr_cmp +What: /sys/bus/coresight/devices/etm<N>/nr_addr_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of address comparator pairs that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_cntr +What: /sys/bus/coresight/devices/etm<N>/nr_cntr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of counters that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_ext_inp +What: /sys/bus/coresight/devices/etm<N>/nr_ext_inp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates how many external inputs are implemented.

-What: /sys/bus/coresight/devices/<memory_map>.etm/numcidc +What: /sys/bus/coresight/devices/etm<N>/numcidc Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of Context ID comparators that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/numvmidc +What: /sys/bus/coresight/devices/etm<N>/numvmidc Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of VMID comparators that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nrseqstate +What: /sys/bus/coresight/devices/etm<N>/nrseqstate Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of sequencer states that are implemented.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_resource +What: /sys/bus/coresight/devices/etm<N>/nr_resource Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of resource selection pairs that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/nr_ss_cmp +What: /sys/bus/coresight/devices/etm<N>/nr_ss_cmp Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Indicates the number of single-shot comparator controls that are available for tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/reset +What: /sys/bus/coresight/devices/etm<N>/reset Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (W) Cancels all configuration on a trace unit and set it back to its boot configuration.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mode +What: /sys/bus/coresight/devices/etm<N>/mode Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -91,302 +91,302 @@ Description: (RW) Controls various modes supported by this ETM, for example P0 instruction tracing, branch broadcast, cycle counting and context ID tracing.

-What: /sys/bus/coresight/devices/<memory_map>.etm/pe +What: /sys/bus/coresight/devices/etm<N>/pe Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls which PE to trace.

-What: /sys/bus/coresight/devices/<memory_map>.etm/event +What: /sys/bus/coresight/devices/etm<N>/event Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls the tracing of arbitrary events from bank 0 to 3.

-What: /sys/bus/coresight/devices/<memory_map>.etm/event_instren +What: /sys/bus/coresight/devices/etm<N>/event_instren Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls the behavior of the events in bank 0 to 3.

-What: /sys/bus/coresight/devices/<memory_map>.etm/event_ts +What: /sys/bus/coresight/devices/etm<N>/event_ts Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls the insertion of global timestamps in the trace streams.

-What: /sys/bus/coresight/devices/<memory_map>.etm/syncfreq +What: /sys/bus/coresight/devices/etm<N>/syncfreq Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls how often trace synchronization requests occur.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cyc_threshold +What: /sys/bus/coresight/devices/etm<N>/cyc_threshold Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Sets the threshold value for cycle counting.

-What: /sys/bus/coresight/devices/<memory_map>.etm/bb_ctrl +What: /sys/bus/coresight/devices/etm<N>/bb_ctrl Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls which regions in the memory map are enabled to use branch broadcasting.

-What: /sys/bus/coresight/devices/<memory_map>.etm/event_vinst +What: /sys/bus/coresight/devices/etm<N>/event_vinst Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls instruction trace filtering.

-What: /sys/bus/coresight/devices/<memory_map>.etm/s_exlevel_vinst +What: /sys/bus/coresight/devices/etm<N>/s_exlevel_vinst Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) In Secure state, each bit controls whether instruction tracing is enabled for the corresponding exception level.

-What: /sys/bus/coresight/devices/<memory_map>.etm/ns_exlevel_vinst +What: /sys/bus/coresight/devices/etm<N>/ns_exlevel_vinst Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) In non-secure state, each bit controls whether instruction tracing is enabled for the corresponding exception level.

-What: /sys/bus/coresight/devices/<memory_map>.etm/addr_idx +What: /sys/bus/coresight/devices/etm<N>/addr_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which address comparator or pair (of comparators) to work with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/addr_instdatatype +What: /sys/bus/coresight/devices/etm<N>/addr_instdatatype Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls what type of comparison the trace unit performs.

-What: /sys/bus/coresight/devices/<memory_map>.etm/addr_single +What: /sys/bus/coresight/devices/etm<N>/addr_single Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Used to setup single address comparator values.

-What: /sys/bus/coresight/devices/<memory_map>.etm/addr_range +What: /sys/bus/coresight/devices/etm<N>/addr_range Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Used to setup address range comparator values.

-What: /sys/bus/coresight/devices/<memory_map>.etm/seq_idx +What: /sys/bus/coresight/devices/etm<N>/seq_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which sequensor.

-What: /sys/bus/coresight/devices/<memory_map>.etm/seq_state +What: /sys/bus/coresight/devices/etm<N>/seq_state Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Use this to set, or read, the sequencer state.

-What: /sys/bus/coresight/devices/<memory_map>.etm/seq_event +What: /sys/bus/coresight/devices/etm<N>/seq_event Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Moves the sequencer state to a specific state.

-What: /sys/bus/coresight/devices/<memory_map>.etm/seq_reset_event +What: /sys/bus/coresight/devices/etm<N>/seq_reset_event Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Moves the sequencer to state 0 when a programmed event occurs.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_idx +What: /sys/bus/coresight/devices/etm<N>/cntr_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which counter unit to work with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cntrldvr +What: /sys/bus/coresight/devices/etm<N>/cntrldvr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) This sets or returns the reload count value of the specific counter.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_val +What: /sys/bus/coresight/devices/etm<N>/cntr_val Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) This sets or returns the current count value of the specific counter.

-What: /sys/bus/coresight/devices/<memory_map>.etm/cntr_ctrl +What: /sys/bus/coresight/devices/etm<N>/cntr_ctrl Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls the operation of the selected counter.

-What: /sys/bus/coresight/devices/<memory_map>.etm/res_idx +What: /sys/bus/coresight/devices/etm<N>/res_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which resource selection unit to work with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/res_ctrl +What: /sys/bus/coresight/devices/etm<N>/res_ctrl Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Controls the selection of the resources in the trace unit.

-What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_idx +What: /sys/bus/coresight/devices/etm<N>/ctxid_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which context ID comparator to work with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_pid +What: /sys/bus/coresight/devices/etm<N>/ctxid_pid Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Get/Set the context ID comparator value to trigger on.

-What: /sys/bus/coresight/devices/<memory_map>.etm/ctxid_masks +What: /sys/bus/coresight/devices/etm<N>/ctxid_masks Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Mask for all 8 context ID comparator value registers (if implemented).

-What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_idx +What: /sys/bus/coresight/devices/etm<N>/vmid_idx Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Select which virtual machine ID comparator to work with.

-What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_val +What: /sys/bus/coresight/devices/etm<N>/vmid_val Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Get/Set the virtual machine ID comparator value to trigger on.

-What: /sys/bus/coresight/devices/<memory_map>.etm/vmid_masks +What: /sys/bus/coresight/devices/etm<N>/vmid_masks Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (RW) Mask for all 8 virtual machine ID comparator value registers (if implemented).

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcoslsr +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcoslsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the OS Lock Status Register (0x304). The value it taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdcr +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdcr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Power Down Control Register (0x310). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpdsr +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpdsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Power Down Status Register (0x314). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trclsr +What: /sys/bus/coresight/devices/etm<N>/mgmt/trclsr Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the SW Lock Status Register (0xFB4). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcauthstatus +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcauthstatus Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Authentication Status Register (0xFB8). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevid +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevid Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Device ID Register (0xFC8). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcdevtype +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcdevtype Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Device Type Register (0xFCC). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr0 +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr0 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Peripheral ID0 Register (0xFE0). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr1 +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr1 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Peripheral ID1 Register (0xFE4). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr2 +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr2 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Peripheral ID2 Register (0xFE8). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcpidr3 +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcpidr3 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the Peripheral ID3 Register (0xFEC). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcconfig +What: /sys/bus/coresight/devices/etm<N>/mgmt/trcconfig Date: February 2016 KernelVersion: 4.07 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the trace configuration register (0x010) as currently set by SW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trctraceid +What: /sys/bus/coresight/devices/etm<N>/mgmt/trctraceid Date: February 2016 KernelVersion: 4.07 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Print the content of the trace ID register (0x040).

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr0 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr0 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns the tracing capabilities of the trace unit (0x1E0). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr1 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr1 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns the tracing capabilities of the trace unit (0x1E4). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr2 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr2 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -394,7 +394,7 @@ Description: (R) Returns the maximum size of the data value, data address, VMID, context ID and instuction address in the trace unit (0x1E8). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr3 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr3 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -403,42 +403,42 @@ Description: (R) Returns the value associated with various resources architecture specification for more details (0x1E8). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr4 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr4 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns how many resources the trace unit supports (0x1F0). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr5 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr5 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns how many resources the trace unit supports (0x1F4). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr8 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr8 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns the maximum speculation depth of the instruction trace stream. (0x180). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr9 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr9 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns the number of P0 right-hand keys that the trace unit can use (0x184). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr10 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr10 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org Description: (R) Returns the number of P1 right-hand keys that the trace unit can use (0x188). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr11 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr11 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -446,7 +446,7 @@ Description: (R) Returns the number of special P1 right-hand keys that the trace unit can use (0x18C). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr12 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr12 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org @@ -454,7 +454,7 @@ Description: (R) Returns the number of conditional P1 right-hand keys that the trace unit can use (0x190). The value is taken directly from the HW.

-What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr13 +What: /sys/bus/coresight/devices/etm<N>/trcidr/trcidr13 Date: April 2015 KernelVersion: 4.01 Contact: Mathieu Poirier mathieu.poirier@linaro.org