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Documentation/ABI/testing/configfs-stp-policy-p_ost

@@ -0,0 +1,9 @@
+What:		/config/stp-policy/<device>:p_ost.<policy>/<node>/entity
+Date:		May 2026
+KernelVersion:	7.1
+Description:
+		Set the entity ID which identifies the trace source in the
+		OST packet header. Entity ID values (0~239) are defined by
+		the TS owner. Currently supported values are ftrace, console
+		and diag. RW.
+

Documentation/ABI/testing/debugfs-aest

@@ -0,0 +1,99 @@
+What:		/sys/kernel/debug/aest/<name>.<id>/
+Date:		Dec 2025
+KernelVersion:	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		Directory represented a AEST device, <name> means device type,
+		like:
+
+		- processor
+		- memory
+		- smmu
+		- ...
+
+		<id> is the unique ID for this device.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/*
+Date:		Dec 2025
+KernelVersion:	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		Attibute for aest node which belong this device, the format
+		of node name is: <Node Type>-<Node Address>
+
+		See more at:
+			https://developer.arm.com/documentation/den0085/latest/
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/ce_threshold
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(WO) Write the ce threshold to all records of this node. Failed
+		if input exceeded the maximum threshold
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/err_count
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(RO) Outputs error statistics for all error records of this node.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/err_*
+Date:		Dec 2025
+KernelVersion:	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(RO) Read err_* register and return val.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/ce_threshold
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(RW) Read and write the ce threshold to this record. Failed
+		if input exceeded the maximum threshold
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/err_count
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(RO) Outputs error statistics for all this records.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/inject/err_*
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(RW) These registers are used to simulate soft injection errors
+		by holding error register values. You can write any values
+		to them. To trigger the injection, you need to write soft_inject
+		at last. The validity of the injected error depends on the
+		value written to err_status.
+
+		Accepts values -  any.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/inject/soft_inject
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(WO) Write any value to this file to trigger the error
+		injection. Make sure you have specified all necessary error
+		parameters, i.e. this write should be the last step when
+		injecting errors.
+
+		Accepts values -  any.
+
+What:		/sys/kernel/debug/aest/<name>.<id>/<node_name>/record<index>/inject/hard_inject
+Date:		Dec 2025
+KernelVersion	6.19
+Contact:	Ruidong Tian <tianruidong@linux.alibaba.com>
+Description:
+		(WO) If the AEST table provides error injection registers,
+		you can write to them via this interface. For instance,
+		values can be written to the ERXPFGCTL register. The post-injection
+		behavior is then determined by the hardware specification.
+
+		Accepts values - any.

Documentation/ABI/testing/sysfs-bus-amba-devices-tgu

@@ -0,0 +1,51 @@
+What:		/sys/bus/amba/devices/<tgu-name>/enable_tgu
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the enable/disable status of TGU
+		Accepts only one of the 2 values -  0 or 1.
+		0 : disable TGU.
+		1 : enable TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_priority[0:3]/reg[0:17]
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the sensed signal with specific step and priority for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_condition_decode/reg[0:3]
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the decode mode with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_condition_select/reg[0:3]
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the next action with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_timer/reg[0:1]
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the timer value with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_counter/reg[0:1]
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the counter value with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/reset_tgu
+Date:		April 2026
+KernelVersion:	7.1
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(Write) Write 1 to reset the dataset for TGU.

Documentation/ABI/testing/sysfs-bus-coresight-devices-ctcu

@@ -0,0 +1,9 @@
+What:           /sys/bus/coresight/devices/<ctcu-name>/irq_enabled[0:1]
+Date:           June 2026
+KernelVersion:  7.3
+Contact:        Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>; Jinlong Mao <jinlong.mao@oss.qualcomm.com>; Jie Gan <jie.gan@oss.qualcomm.com>
+Description:
+		(RW) Configure the flag to enable interrupt to count data during CTCU enablement.
+		An interrupt is generated when the data size exceeds the value set in the IRQ register.
+		0 : disable
+		1 : enable

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@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@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@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@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@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@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@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@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@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@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@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@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@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@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@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

Documentation/ABI/testing/sysfs-class-devfreq

@@ -37,6 +37,14 @@ Description:
 		The /sys/class/devfreq/.../target_freq shows the next governor
 		predicted target frequency of the corresponding devfreq object.
 
+		Reading this attribute returns -EINVAL when the active
+		governor does not advertise DEVFREQ_GOV_ATTR_TARGET_FREQ.
+		All in-tree governors that drive frequency transitions tag
+		this attribute, so existing in-tree behaviour is unchanged.
+		Out-of-tree governors that previously relied on the
+		unconditional read of df->previous_freq must opt in by
+		setting DEVFREQ_GOV_ATTR_TARGET_FREQ in their attrs field.
+
 What:		/sys/class/devfreq/.../trans_stat
 Date:		October 2012
 Contact:	MyungJoo Ham <myungjoo.ham@samsung.com>

Documentation/ABI/testing/sysfs-driver-eud

@@ -7,3 +7,19 @@ Description:
 		EUD based on a 1 or a 0 value. By enabling EUD,
 		the user is able to activate the mini-usb hub of
 		EUD for debug and trace capabilities.
+
+What:		/sys/bus/platform/drivers/qcom_eud/.../port
+Date:		January 2026
+Contact:	Elson Serrao <elson.serrao@oss.qualcomm.com>
+Description:
+		Selects which USB port the Embedded USB Debugger (EUD)
+		is mapped to on platforms providing multiple High-Speed
+		USB ports.
+
+		Valid values:
+		  0 - Primary USB port
+		  1 - Secondary USB port
+
+		The attribute is writable only while EUD is disabled.
+		Reading the attribute returns the currently selected
+		USB port number.

Documentation/ABI/testing/sysfs-lontium-firmware

@@ -0,0 +1,10 @@
+What:		/sys/bus/i2c/drivers/<driver>/.../firmware
+Date:		July 2026
+KernelVersion:	7.3
+Contact:	Mohit Dsor <mohit.dsor@oss.qualcomm.com>
+Description:
+		Read: Returns the current firmware version loaded on the
+		Lontium bridge chip in hex format (e.g. "0x0105").
+
+		Write: Triggers a firmware upgrade of the chip using the
+		firmware file loaded via the firmware loader.