Messages in this thread | | | Date | Thu, 1 Jun 2023 16:17:59 +0800 | Subject | Re: [PATCH v4 00/11] Add support to configure TPDM DSB subunit | From | Tao Zhang <> |
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On 5/23/2023 3:50 PM, Tao Zhang wrote: > On 4/28/2023 12:53 AM, Suzuki K Poulose wrote: >> On 27/04/2023 10:00, Tao Zhang wrote: >>> Introduction of TPDM DSB subunit >>> DSB subunit is responsible for creating a dataset element, and is also >>> optionally responsible for packing it to fit multiple elements on a >>> single ATB transfer if possible in the configuration. The TPDM Core >>> Datapath requests timestamps be stored by the TPDA and then delivering >>> ATB sized data (depending on ATB width and element size, this could >>> be smaller or larger than a dataset element) to the ATB Mast FSM. >>> >>> The DSB subunit must be configured prior to enablement. This series >>> adds support for TPDM to configure the configure DSB 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 DSB subunit. >>> e.g. >>> /sys/devices/platform/soc@0/69d0000.tpdm/tpdm0#ls -l | grep dsb >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_edge_ctrl >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_edge_ctrl_mask >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_mode >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_patt_mask >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_patt_ts >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_patt_type >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_patt_val >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_trig_patt_mask >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_trig_patt_val >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_trig_ts >>> -rw-r--r-- 1 root root 4096 Jan 1 00:01 dsb_trig_type >>> >>> We can use the commands are similar to the below to configure the >>> TPDMs which support DSB subunit. Enable coresight sink first. >>> echo 1 > /sys/bus/coresight/devices/tmc_etf0/enable_sink >>> echo 1 > /sys/bus/coresight/devices/tpdm0/reset >>> echo 0x3 0x3 0x1 > /sys/bus/coresight/devices/tpdm0/dsb_edge_ctrl_mask >>> echo 0x6d 0x6d 0 > /sys/bus/coresight/devices/tpdm0/dsb_edge_ctrl >>> echo 1 > /sys/bus/coresight/devices/tpdm0/dsb_patt_ts >>> echo 1 > /sys/bus/coresight/devices/tpdm0/dsb_patt_type >>> echo 0 > /sys/bus/coresight/devices/tpdm0/dsb_trig_ts >>> echo 0 0xFFFFFFFF > /sys/bus/coresight/devices/tpdm0/dsb_patt_mask >>> echo 0 0xFFFFFFFF > /sys/bus/coresight/devices/tpdm0/dsb_trig_patt_val >>> >>> This patch series depends on patch series "[PATCH v2 0/9] coresight: >>> Fix CTI module refcount leak by making it a helper device" >>> https://patchwork.kernel.org/project/linux-arm-kernel/patch/20230425143542.2305069-14-james.clark@arm.com/ >>> >> >> There is v6 available for the above and there may be changes in the data >> structures. But the series is stable now, and may be you could cordinate >> with James and repost the series at rc1 ? > > This patch series has depended on James's v6 patch series. It's a > description mistake. > > The link I posted is James's v6 patch series. > > Would you mind continue to review this patch series first? > > > Tao > Hi Suzuki,
Do you have more review comments on the rest of the patches(#5-#11) in this series?
Or do you prefer me to update patches(#1-#4) and resubmit first?
Best,
Tao
>> >> Suzuki >> >> _______________________________________________ >> CoreSight mailing list -- coresight@lists.linaro.org >> To unsubscribe send an email to coresight-leave@lists.linaro.org
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