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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/ABI/testing/sysfs-driver-ufs
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+What: /sys/bus/*/drivers/ufshcd/*/auto_hibern8
+Date: March 2018
+Contact: linux-scsi@vger.kernel.org
+Description:
+ This file contains the auto-hibernate idle timer setting of a
+ UFS host controller. A value of '0' means auto-hibernate is not
+ enabled. Otherwise the value is the number of microseconds of
+ idle time before the UFS host controller will autonomously put
+ the link into hibernate state. That will save power at the
+ expense of increased latency. Note that the hardware supports
+ 10-bit values with a power-of-ten multiplier which allows a
+ maximum value of 102300000. Refer to the UFS Host Controller
+ Interface specification for more details.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_type
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the device type. This is one of the UFS
+ device descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_class
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the device class. This is one of the UFS
+ device descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_sub_class
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the UFS storage subclass. This is one of
+ the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/protocol
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the protocol supported by an UFS device.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_luns
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows number of logical units. This is one of
+ the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_wluns
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows number of well known logical units.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/boot_enable
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows value that indicates whether the device is
+ enabled for boot. This is one of the UFS device descriptor
+ parameters. The full information about the descriptor could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/descriptor_access_enable
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows value that indicates whether the device
+ descriptor could be read after partial initialization phase
+ of the boot sequence. This is one of the UFS device descriptor
+ parameters. The full information about the descriptor could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_power_mode
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows value that defines the power mode after
+ device initialization or hardware reset. This is one of
+ the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/high_priority_lun
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the high priority lun. This is one of
+ the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/secure_removal_type
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the secure removal type. This is one of
+ the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/support_security_lun
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the security lun is supported.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/bkops_termination_latency
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the background operations termination
+ latency. This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/initial_active_icc_level
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the initial active ICC level. This is one
+ of the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/specification_version
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the specification version. This is one
+ of the UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturing_date
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the manufacturing date in BCD format.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/manufacturer_id
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the manufacturee ID. This is one of the
+ UFS device descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtt_capability
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum number of outstanding RTTs
+ supported by the device. This is one of the UFS device
+ descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/rtc_update
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the frequency and method of the realtime
+ clock update. This is one of the UFS device descriptor
+ parameters. The full information about the descriptor
+ could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ufs_features
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows which features are supported by the device.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be
+ found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/ffu_timeout
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the FFU timeout. This is one of the
+ UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/queue_depth
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the device queue depth. This is one of the
+ UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/device_version
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the device version. This is one of the
+ UFS device descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/number_of_secure_wpa
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows number of secure write protect areas
+ supported by the device. This is one of the UFS device
+ descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_max_data_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum amount of data that may be
+ written during the pre-soldering phase of the PSA flow.
+ This is one of the UFS device descriptor parameters.
+ The full information about the descriptor could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/psa_state_timeout
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the command maximum timeout for a change
+ in PSA state. This is one of the UFS device descriptor
+ parameters. The full information about the descriptor could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/unipro_version
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the MIPI UniPro version number in BCD format.
+ This is one of the UFS interconnect descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/interconnect_descriptor/mphy_version
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the MIPI M-PHY version number in BCD format.
+ This is one of the UFS interconnect descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/raw_device_capacity
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the total memory quantity available to
+ the user to configure the device logical units. This is one
+ of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_luns
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum number of logical units
+ supported by the UFS device. This is one of the UFS
+ geometry descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/segment_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the segment size. This is one of the UFS
+ geometry descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/allocation_unit_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the allocation unit size. This is one of
+ the UFS geometry descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/min_addressable_block_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the minimum addressable block size. This
+ is one of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at UFS
+ specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_read_block_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the optimal read block size. This is one
+ of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at UFS
+ specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/optimal_write_block_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the optimal write block size. This is one
+ of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at UFS
+ specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_in_buffer_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum data-in buffer size. This
+ is one of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at UFS
+ specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_out_buffer_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum data-out buffer size. This
+ is one of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at UFS
+ specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/rpmb_rw_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum number of RPMB frames allowed
+ in Security Protocol In/Out. This is one of the UFS geometry
+ descriptor parameters. The full information about the
+ descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/dyn_capacity_resource_policy
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the dynamic capacity resource policy. This
+ is one of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/data_ordering
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows support for out-of-order data transfer.
+ This is one of the UFS geometry descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/max_number_of_contexts
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows maximum available number of contexts which
+ are supported by the device. This is one of the UFS geometry
+ descriptor parameters. The full information about the
+ descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_unit_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows system data tag unit size. This is one of
+ the UFS geometry descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/sys_data_tag_resource_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows maximum storage area size allocated by
+ the device to handle system data by the tagging mechanism.
+ This is one of the UFS geometry descriptor parameters.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/secure_removal_types
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows supported secure removal types. This is
+ one of the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/memory_types
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows supported memory types. This is one of
+ the UFS geometry descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_max_alloc_units
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum number of allocation units for
+ different memory types (system code, non persistent,
+ enhanced type 1-4). This is one of the UFS geometry
+ descriptor parameters. The full information about the
+ descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/*_memory_capacity_adjustment_factor
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the memory capacity adjustment factor for
+ different memory types (system code, non persistent,
+ enhanced type 1-4). This is one of the UFS geometry
+ descriptor parameters. The full information about the
+ descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/eol_info
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows preend of life information. This is one
+ of the UFS health descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_a
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows indication of the device life time
+ (method a). This is one of the UFS health descriptor
+ parameters. The full information about the descriptor
+ could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/health_descriptor/life_time_estimation_b
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows indication of the device life time
+ (method b). This is one of the UFS health descriptor
+ parameters. The full information about the descriptor
+ could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/power_descriptor/active_icc_levels_vcc*
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows maximum VCC, VCCQ and VCCQ2 value for
+ active ICC levels from 0 to 15. This is one of the UFS
+ power descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/manufacturer_name
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file contains a device manufactureer name string.
+ The full information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_name
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file contains a product name string. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/oem_id
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file contains a OEM ID string. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/serial_number
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file contains a device serial number string. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/string_descriptors/product_revision
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file contains a product revision string. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/boot_lun_id
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows boot LUN information. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/lun_write_protect
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows LUN write protection status. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/lun_queue_depth
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows LUN queue depth. This is one of the UFS
+ unit descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/psa_sensitive
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows PSA sensitivity. This is one of the UFS
+ unit descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/lun_memory_type
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows LUN memory type. This is one of the UFS
+ unit descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/data_reliability
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file defines the device behavior when a power failure
+ occurs during a write operation. This is one of the UFS
+ unit descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/logical_block_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the size of addressable logical blocks
+ (calculated as an exponent with base 2). This is one of
+ the UFS unit descriptor parameters. The full information about
+ the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/logical_block_count
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows total number of addressable logical blocks.
+ This is one of the UFS unit descriptor parameters. The full
+ information about the descriptor could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/erase_block_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the erase block size. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/provisioning_type
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the thin provisioning type. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/physical_memory_resourse_count
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the total physical memory resources. This is
+ one of the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/context_capabilities
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the context capabilities. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/large_unit_granularity
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the granularity of the LUN. This is one of
+ the UFS unit descriptor parameters. The full information
+ about the descriptor could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/device_init
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the device init status. The full information
+ about the flag could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/permanent_wpe
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether permanent write protection is enabled.
+ The full information about the flag could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/power_on_wpe
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether write protection is enabled on all
+ logical units configured as power on write protected. The
+ full information about the flag could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/bkops_enable
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the device background operations are
+ enabled. The full information about the flag could be
+ found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/life_span_mode_enable
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the device life span mode is enabled.
+ The full information about the flag could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/phy_resource_removal
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether physical resource removal is enable.
+ The full information about the flag could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/busy_rtc
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the device is executing internal
+ operation related to real time clock. The full information
+ about the flag could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/disable_fw_update
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the device FW update is permanently
+ disabled. The full information about the flag could be found
+ at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/boot_lun_enabled
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the boot lun enabled UFS device attribute.
+ The full information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/current_power_mode
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the current power mode UFS device attribute.
+ The full information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/active_icc_level
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the active icc level UFS device attribute.
+ The full information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/ooo_data_enabled
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the out of order data transfer enabled UFS
+ device attribute. The full information about the attribute
+ could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/bkops_status
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the background operations status UFS device
+ attribute. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/purge_status
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the purge operation status UFS device
+ attribute. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_in_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum data size in a DATA IN
+ UPIU. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_data_out_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the maximum number of bytes that can be
+ requested with a READY TO TRANSFER UPIU. The full information
+ about the attribute could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/reference_clock_frequency
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the reference clock frequency UFS device
+ attribute. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/configuration_descriptor_lock
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows whether the configuration descriptor is locked.
+ The full information about the attribute could be found at
+ UFS specifications 2.1. The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/max_number_of_rtt
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the maximum current number of
+ outstanding RTTs in device that is allowed. The full
+ information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_control
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the exception event control UFS device
+ attribute. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/exception_event_status
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the exception event status UFS device
+ attribute. The full information about the attribute could
+ be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/ffu_status
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file provides the ffu status UFS device attribute.
+ The full information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/psa_state
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file show the PSA feature status. The full information
+ about the attribute could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/psa_data_size
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the amount of data that the host plans to
+ load to all logical units in pre-soldering state.
+ The full information about the attribute could be found at
+ UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/class/scsi_device/*/device/dyn_cap_needed
+Date: February 2018
+Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
+Description: This file shows the The amount of physical memory needed
+ to be removed from the physical memory resources pool of
+ the particular logical unit. The full information about
+ the attribute could be found at UFS specifications 2.1.
+
+ The file is read only.
+
+
+What: /sys/bus/platform/drivers/ufshcd/*/rpm_lvl
+Date: September 2014
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry could be used to set or show the UFS device
+ runtime power management level. The current driver
+ implementation supports 6 levels with next target states:
+
+ == ====================================================
+ 0 an UFS device will stay active, an UIC link will
+ stay active
+ 1 an UFS device will stay active, an UIC link will
+ hibernate
+ 2 an UFS device will moved to sleep, an UIC link will
+ stay active
+ 3 an UFS device will moved to sleep, an UIC link will
+ hibernate
+ 4 an UFS device will be powered off, an UIC link will
+ hibernate
+ 5 an UFS device will be powered off, an UIC link will
+ be powered off
+ == ====================================================
+
+What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state
+Date: February 2018
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry shows the target power mode of an UFS device
+ for the chosen runtime power management level.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_link_state
+Date: February 2018
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry shows the target state of an UFS UIC link
+ for the chosen runtime power management level.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/spm_lvl
+Date: September 2014
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry could be used to set or show the UFS device
+ system power management level. The current driver
+ implementation supports 6 levels with next target states:
+
+ == ====================================================
+ 0 an UFS device will stay active, an UIC link will
+ stay active
+ 1 an UFS device will stay active, an UIC link will
+ hibernate
+ 2 an UFS device will moved to sleep, an UIC link will
+ stay active
+ 3 an UFS device will moved to sleep, an UIC link will
+ hibernate
+ 4 an UFS device will be powered off, an UIC link will
+ hibernate
+ 5 an UFS device will be powered off, an UIC link will
+ be powered off
+ == ====================================================
+
+What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state
+Date: February 2018
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry shows the target power mode of an UFS device
+ for the chosen system power management level.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/spm_target_link_state
+Date: February 2018
+Contact: Subhash Jadavani <subhashj@codeaurora.org>
+Description: This entry shows the target state of an UFS UIC link
+ for the chosen system power management level.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows if preserve user-space was configured
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_shared_alloc_units
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the shared allocated units of WB buffer
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_type
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the configured WB type.
+ 0x1 for shared buffer mode. 0x0 for dedicated buffer mode.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_buff_cap_adj
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the total user-space decrease in shared
+ buffer mode.
+ The value of this parameter is 3 for TLC NAND when SLC mode
+ is used as WriteBooster Buffer. 2 for MLC NAND.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_alloc_units
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the Maximum total WriteBooster Buffer size
+ which is supported by the entire device.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_max_wb_luns
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the maximum number of luns that can support
+ WriteBooster.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_red_type
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: The supportability of user space reduction mode
+ and preserve user space mode.
+ 00h: WriteBooster Buffer can be configured only in
+ user space reduction type.
+ 01h: WriteBooster Buffer can be configured only in
+ preserve user space type.
+ 02h: Device can be configured in either user space
+ reduction type or preserve user space type.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/geometry_descriptor/wb_sup_wb_type
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: The supportability of WriteBooster Buffer type.
+
+ === ==========================================================
+ 00h LU based WriteBooster Buffer configuration
+ 01h Single shared WriteBooster Buffer configuration
+ 02h Supporting both LU based WriteBooster.
+ Buffer and Single shared WriteBooster Buffer configuration
+ === ==========================================================
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_enable
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the status of WriteBooster.
+
+ == ============================
+ 0 WriteBooster is not enabled.
+ 1 WriteBooster is enabled
+ == ============================
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_en
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows if flush is enabled.
+
+ == =================================
+ 0 Flush operation is not performed.
+ 1 Flush operation is performed.
+ == =================================
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/flags/wb_flush_during_h8
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: Flush WriteBooster Buffer during hibernate state.
+
+ == =================================================
+ 0 Device is not allowed to flush the
+ WriteBooster Buffer during link hibernate state.
+ 1 Device is allowed to flush the
+ WriteBooster Buffer during link hibernate state.
+ == =================================================
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_avail_buf
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the amount of unused WriteBooster buffer
+ available.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_cur_buf
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the amount of unused current buffer.
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_flush_status
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the flush operation status.
+
+
+ === ======================================
+ 00h idle
+ 01h Flush operation in progress
+ 02h Flush operation stopped prematurely.
+ 03h Flush operation completed successfully
+ 04h Flush operation general failure
+ === ======================================
+
+ The file is read only.
+
+What: /sys/bus/platform/drivers/ufshcd/*/attributes/wb_life_time_est
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows an indication of the WriteBooster Buffer
+ lifetime based on the amount of performed program/erase cycles
+
+ === =============================================
+ 01h 0% - 10% WriteBooster Buffer life time used
+ ...
+ 0Ah 90% - 100% WriteBooster Buffer life time used
+ === =============================================
+
+ The file is read only.
+
+What: /sys/class/scsi_device/*/device/unit_descriptor/wb_buf_alloc_units
+Date: June 2020
+Contact: Asutosh Das <asutoshd@codeaurora.org>
+Description: This entry shows the configured size of WriteBooster buffer.
+ 0400h corresponds to 4GB.
+
+ The file is read only.