[PATCH v10 5/5] coresight: cti: document banked and missing base CTI sysfs registers

Mike Leach mike.leach at arm.com
Fri Sep 11 02:06:47 PDT 2026


Reviewed-by: Mike Leach <mike.leach at arm.com>

On 6/15/26 13:32, Yingchao Deng wrote:
> Document the new sysfs entries triginstatus[1-3], trigoutstatus[1-3],
> ittrigin[1-3], ittrigout[1-3], ittrigoutack[1-3] and ittriginack[1-3]
> in the coresight-cti ABI documentation.
> 
> Also document the previously undocumented base integration test
> registers itctrl, itchin, itchinack, ittrigin, ittriginack, itchout,
> itchoutack, ittrigout and ittrigoutack, which were introduced in
> kernel version 5.7.
> 
> Signed-off-by: Yingchao Deng <yingchao.deng at oss.qualcomm.com>
> ---
>   .../ABI/testing/sysfs-bus-coresight-devices-cti    | 90 ++++++++++++++++++++++
>   1 file changed, 90 insertions(+)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
> index a2aef7f5a6d7..9d7831ac455b 100644
> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
> @@ -128,12 +128,102 @@ KernelVersion:	5.7
>   Contact:	Mike Leach or Mathieu Poirier
>   Description:	(Read) read current status of input trigger signals
>   
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/triginstatus[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(Read) read current status of QCOM extended input trigger signals.
> +
>   What:		/sys/bus/coresight/devices/<cti-name>/regs/trigoutstatus
>   Date:		March 2020
>   KernelVersion:	5.7
>   Contact:	Mike Leach or Mathieu Poirier
>   Description:	(Read) read current status of output trigger signals.
>   
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/trigoutstatus[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(Read) read current status of QCOM extended output trigger signals.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/itctrl
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(RW) Control integration mode.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/itchin
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Read) Read the values of the CTCHIN inputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/itchinack
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Write) Write the value of the CTCHINACK input.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigin
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Read) Read the values of the CTTRIGIN inputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigin[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(Read) Read the values of the QCOM extended CTTRIGIN inputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittriginack
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Write) Write the value of the CTTRIGINACK input.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittriginack[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(Write) Write the value of the QCOM extended CTTRIGINACK input.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/itchout
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(RW) Read or write the value of the CTCHOUT outputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/itchoutack
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Read) Read the value of the CTCHOUTACK input.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigout
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(RW) Read or write the value of the CTTRIGOUT outputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigout[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(RW) Read or write the value of the QCOM extended CTTRIGOUT outputs.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigoutack
> +Date:		March 2020
> +KernelVersion:	5.7
> +Contact:	coresight at lists.linaro.org
> +Description:	(Read) Read the value of the CTTRIGOUTACK input.
> +
> +What:		/sys/bus/coresight/devices/<cti-name>/regs/ittrigoutack[1-3]
> +Date:		June 2026
> +KernelVersion:	7.3
> +Contact:	Jinlong Mao <jinlong.mao at oss.qualcomm.com>
> +Description:	(Read) Read the value of the QCOM extended CTTRIGOUTACK input.
> +
>   What:		/sys/bus/coresight/devices/<cti-name>/channels/trigin_attach
>   Date:		March 2020
>   KernelVersion:	5.7
> 




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