Re: [PATCH v2 2/3] coresight-tpdm: Add support to select lane

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On 05/11/2024 12:39, Mao Jinlong wrote:
From: Tao Zhang <quic_taozha@xxxxxxxxxxx>

TPDM MCMB subunits supports up to 8 lanes CMB. For MCMB
configurations, the field "XTRIG_LNSEL" in CMB_CR register selects
which lane participates in the output pattern mach cross trigger
mechanism governed by the M_CMB_DXPR and M_CMB_XPMR regisers.

Signed-off-by: Tao Zhang <quic_taozha@xxxxxxxxxxx>
Signed-off-by: Mao Jinlong <quic_jinlmao@xxxxxxxxxxx>
---
  .../testing/sysfs-bus-coresight-devices-tpdm  |  8 +++
  drivers/hwtracing/coresight/coresight-tpdm.c  | 51 +++++++++++++++++++
  drivers/hwtracing/coresight/coresight-tpdm.h  |  3 ++
  3 files changed, 62 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
index bf710ea6e0ef..e833edfec79e 100644
--- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
+++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
@@ -257,3 +257,11 @@ Contact:	Jinlong Mao (QUIC) <quic_jinlmao@xxxxxxxxxxx>, Tao Zhang (QUIC) <quic_t
  Description:
  		(RW) Set/Get the MSR(mux select register) for the CMB subunit
  		TPDM.
+
+What:		/sys/bus/coresight/devices/<tpdm-name>/mcmb_trig_lane
+Date:		Nov 2024
+KernelVersion	6.13

6.14



Suzuki






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