[PATCH v2 0/3] Add support to configure TPDM MCMB subunit
Jinlong Mao
quic_jinlmao at quicinc.com
Mon Dec 16 23:47:06 PST 2024
On 2024/11/5 20:39, Mao Jinlong wrote:
> Introduction of TPDM MCMB(Multi-lane Continuous Multi Bit) subunit
> MCMB (Multi-lane CMB) is a special form of CMB dataset type. MCMB
> subunit has the same number and usage of registers as CMB subunit.
> Just like the CMB subunit, the MCMB subunit must be configured prior
> to enablement. This series adds support for TPDM to configure the
> MCMB subunit.
>
> Once this series patches are applied properly, the new tpdm nodes for
> should be observed at the tpdm path /sys/bus/coresight/devices/tpdm*
> which supports MCMB subunit. All sysfs files of CMB subunit TPDM are
> included in MCMB subunit TPDM. On this basis, MCMB subunit TPDM will
> have new sysfs files to select and enable the lane.
>
> Changes in V2:
> 1. Use tdpm_data->cmb instead of (tpdm_has_cmb_dataset(tpdm_data) ||
> tpdm_has_mcmb_dataset(tpdm_data)) for cmb dataset support.
> 2. Embed mcmb_dataset struct into cmb struct.
> 3. Update the date and version in sysfs-bus-coresight-devices-tpdm
>
> Mao Jinlong (1):
> coresight-tpdm: Add MCMB dataset support
>
> Tao Zhang (2):
> coresight-tpdm: Add support to select lane
> coresight-tpdm: Add support to enable the lane for MCMB TPDM
>
> .../testing/sysfs-bus-coresight-devices-tpdm | 15 +++
> drivers/hwtracing/coresight/coresight-tpda.c | 7 +-
> drivers/hwtracing/coresight/coresight-tpdm.c | 124 +++++++++++++++++-
> drivers/hwtracing/coresight/coresight-tpdm.h | 33 +++--
> 4 files changed, 158 insertions(+), 21 deletions(-)
Gentle reminder for the review.
>
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