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* [PATCH V0 0/1] Add QAD, Cti-trigger and Bootconfig support for Data Capture and Compare(DCC)
@ 2023-01-09 10:13 Souradeep Chowdhury
  2023-01-09 10:13 ` [PATCH V0 1/1] soc: qcom: dcc: Add QAD, Cti-trigger and Bootconfig support for DCC Souradeep Chowdhury
  0 siblings, 1 reply; 6+ messages in thread
From: Souradeep Chowdhury @ 2023-01-09 10:13 UTC (permalink / raw)
  To: Andy Gross, Konrad Dybcio, Krzysztof Kozlowski, Bjorn Andersson,
	Rob Herring, Alex Elder
  Cc: linux-arm-kernel, linux-kernel, linux-arm-msm, devicetree,
	Sai Prakash Ranjan, Sibi Sankar, Rajendra Nayak, vkoul,
	Souradeep Chowdhury

This patch adds the Bootconfig, QAD and CTI-Trigger support for DCC.

1.Bootconfig

Bootconfig parser has been added to DCC driver so that the register addresses
can be configured during boot-time. This is used to debug crashes that can happen
during boot-time. The expected format of a bootconfig is as follows:-

dcc_config {
	link_list_0 {
		qcom-curr-link-list = <The list number to configure>
		qcom-link-list =  <Address as same format as dcc separated by '_'>,
	}
}

Example:

dcc_config {
	link_list_0 {
		qcom-curr-link-list = 6
		qcom-link-list = R_0x1781005c_1_apb,
				 R_0x1782005c_1_apb
	}
	link_list_1 {
		qcom-curr-link-list = 5
		qcom-link-list = R_0x1784005c_1_apb
	}
}

2.QAD

QAD can be enabled as a part of debugfs file under each individual list folder.
QAD is used to specify the access control for DCC configurations, on enabling
it the access control to dcc configuration space is restricted.

3.CTI-trigger

CTI trigger is used to enable the Cross trigger interface for DCC. On enabling
CTI trigger the dcc software trigger can be done by writing to CTI trig-out.
Also the hwtrigger debugfs file is created which needs to be disabled for enabling
CTI-trigger.

Souradeep Chowdhury (1):
  soc: qcom: dcc: Add QAD, Ctitrigger and Bootconfig support for DCC

 Documentation/ABI/testing/debugfs-driver-dcc |  24 +++
 drivers/soc/qcom/dcc.c                       | 281 ++++++++++++++++++++++++++-
 2 files changed, 301 insertions(+), 4 deletions(-)

--
2.7.4


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2023-01-25  7:59 UTC | newest]

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2023-01-09 10:13 [PATCH V0 0/1] Add QAD, Cti-trigger and Bootconfig support for Data Capture and Compare(DCC) Souradeep Chowdhury
2023-01-09 10:13 ` [PATCH V0 1/1] soc: qcom: dcc: Add QAD, Cti-trigger and Bootconfig support for DCC Souradeep Chowdhury
2023-01-09 11:16   ` kernel test robot
2023-01-09 15:28   ` kernel test robot
2023-01-10 13:43     ` Souradeep Chowdhury
2023-01-25  7:59     ` Souradeep Chowdhury

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