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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/device_descriptor/manufacturer_id Date: February 2018 Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com> Description: This file shows the manufacturer 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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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* What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/string_descriptors/manufacturer_name Date: February 2018 Contact: Stanislav Nijnikov <stanislav.nijnikov@wdc.com> Description: This file contains a device manufacturer 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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 What: /sys/bus/platform/devices/*.ufs/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 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 What: /sys/bus/platform/devices/*.ufs/rpm_lvl Date: September 2014 Contact: Can Guo <quic_cang@quicinc.com> Description: This entry could be used to set or show the UFS device runtime power management level. The current driver implementation supports 7 levels with next target states: == ==================================================== 0 UFS device will stay active, UIC link will stay active 1 UFS device will stay active, UIC link will hibernate 2 UFS device will be moved to sleep, UIC link will stay active 3 UFS device will be moved to sleep, UIC link will hibernate 4 UFS device will be powered off, UIC link will hibernate 5 UFS device will be powered off, UIC link will be powered off 6 UFS device will be moved to deep sleep, UIC link will be powered off. Note, deep sleep might not be supported in which case this value will not be accepted == ==================================================== What: /sys/bus/platform/drivers/ufshcd/*/rpm_target_dev_state What: /sys/bus/platform/devices/*.ufs/rpm_target_dev_state Date: February 2018 Contact: Can Guo <quic_cang@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/rpm_target_link_state Date: February 2018 Contact: Can Guo <quic_cang@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/spm_lvl Date: September 2014 Contact: Can Guo <quic_cang@quicinc.com> Description: This entry could be used to set or show the UFS device system power management level. The current driver implementation supports 7 levels with next target states: == ==================================================== 0 UFS device will stay active, UIC link will stay active 1 UFS device will stay active, UIC link will hibernate 2 UFS device will be moved to sleep, UIC link will stay active 3 UFS device will be moved to sleep, UIC link will hibernate 4 UFS device will be powered off, UIC link will hibernate 5 UFS device will be powered off, UIC link will be powered off 6 UFS device will be moved to deep sleep, UIC link will be powered off. Note, deep sleep might not be supported in which case this value will not be accepted == ==================================================== What: /sys/bus/platform/drivers/ufshcd/*/spm_target_dev_state What: /sys/bus/platform/devices/*.ufs/spm_target_dev_state Date: February 2018 Contact: Can Guo <quic_cang@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/spm_target_link_state Date: February 2018 Contact: Can Guo <quic_cang@quicinc.com> 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/*/monitor/monitor_enable What: /sys/bus/platform/devices/*.ufs/monitor/monitor_enable Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the status of performance monitor enablement and it can be used to start/stop the monitor. When the monitor is stopped, the performance data collected is also cleared. What: /sys/bus/platform/drivers/ufshcd/*/monitor/monitor_chunk_size What: /sys/bus/platform/devices/*.ufs/monitor/monitor_chunk_size Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file tells the monitor to focus on requests transferring data of specific chunk size (in Bytes). 0 means any chunk size. It can only be changed when monitor is disabled. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_sectors What: /sys/bus/platform/devices/*.ufs/monitor/read_total_sectors Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how many sectors (in 512 Bytes) have been sent from device to host after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_total_busy What: /sys/bus/platform/devices/*.ufs/monitor/read_total_busy Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how long (in micro seconds) has been spent sending data from device to host after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_nr_requests What: /sys/bus/platform/devices/*.ufs/monitor/read_nr_requests Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how many read requests have been sent after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_max What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_max Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the maximum latency (in micro seconds) of read requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_min What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_min Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the minimum latency (in micro seconds) of read requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_avg What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_avg Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the average latency (in micro seconds) of read requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/read_req_latency_sum What: /sys/bus/platform/devices/*.ufs/monitor/read_req_latency_sum Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the total latency (in micro seconds) of read requests sent after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_sectors What: /sys/bus/platform/devices/*.ufs/monitor/write_total_sectors Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how many sectors (in 512 Bytes) have been sent from host to device after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_total_busy What: /sys/bus/platform/devices/*.ufs/monitor/write_total_busy Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how long (in micro seconds) has been spent sending data from host to device after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_nr_requests What: /sys/bus/platform/devices/*.ufs/monitor/write_nr_requests Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows how many write requests have been sent after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_max What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_max Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the maximum latency (in micro seconds) of write requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_min What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_min Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the minimum latency (in micro seconds) of write requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_avg What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_avg Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the average latency (in micro seconds) of write requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/monitor/write_req_latency_sum What: /sys/bus/platform/devices/*.ufs/monitor/write_req_latency_sum Date: January 2021 Contact: Can Guo <quic_cang@quicinc.com> Description: This file shows the total latency (in micro seconds) of write requests after monitor gets started. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/device_descriptor/wb_presv_us_en What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_presv_us_en Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_shared_alloc_units Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/device_descriptor/wb_type Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_buff_cap_adj Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_alloc_units Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_max_wb_luns Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_red_type Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/geometry_descriptor/wb_sup_wb_type Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/flags/wb_enable Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_en Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/flags/wb_flush_during_h8 Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/attributes/wb_avail_buf Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/attributes/wb_cur_buf Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/attributes/wb_flush_status Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 What: /sys/bus/platform/devices/*.ufs/attributes/wb_life_time_est Date: June 2020 Contact: Asutosh Das <quic_asutoshd@quicinc.com> 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 <quic_asutoshd@quicinc.com> Description: This entry shows the configured size of WriteBooster buffer. 0400h corresponds to 4GB. The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/wb_on What: /sys/bus/platform/devices/*.ufs/wb_on Date: January 2021 Contact: Bean Huo <beanhuo@micron.com> Description: This node is used to set or display whether UFS WriteBooster is enabled. Echo 0 to this file to disable UFS WriteBooster or 1 to enable it. The WriteBooster is enabled after power-on/reset, however, it will be disabled/enable while CLK scaling down/up (if the platform supports UFSHCD_CAP_CLK_SCALING). For a platform that doesn't support UFSHCD_CAP_CLK_SCALING, we can disable/enable WriteBooster through this sysfs node. What: /sys/bus/platform/drivers/ufshcd/*/enable_wb_buf_flush What: /sys/bus/platform/devices/*.ufs/enable_wb_buf_flush Date: July 2022 Contact: Jinyoung Choi <j-young.choi@samsung.com> Description: This entry shows the status of WriteBooster buffer flushing and it can be used to enable or disable the flushing. If flushing is enabled, the device executes the flush operation when the command queue is empty. What: /sys/bus/platform/drivers/ufshcd/*/wb_flush_threshold What: /sys/bus/platform/devices/*.ufs/wb_flush_threshold Date: June 2023 Contact: Lu Hongfei <luhongfei@vivo.com> Description: wb_flush_threshold represents the threshold for flushing WriteBooster buffer, whose value expressed in unit of 10% granularity, such as '1' representing 10%, '2' representing 20%, and so on. If avail_wb_buff < wb_flush_threshold, it indicates that WriteBooster buffer needs to be flushed, otherwise it is not necessary. Contact: Daniil Lunev <dlunev@chromium.org> What: /sys/bus/platform/drivers/ufshcd/*/capabilities/ What: /sys/bus/platform/devices/*.ufs/capabilities/ Date: August 2022 Description: The group represents the effective capabilities of the host-device pair. i.e. the capabilities which are enabled in the driver for the specific host controller, supported by the host controller and are supported and/or have compatible configuration on the device side. Contact: Daniil Lunev <dlunev@chromium.org> What: /sys/bus/platform/drivers/ufshcd/*/capabilities/clock_scaling What: /sys/bus/platform/devices/*.ufs/capabilities/clock_scaling Date: August 2022 Contact: Daniil Lunev <dlunev@chromium.org> Description: Indicates status of clock scaling. == ============================ 0 Clock scaling is not supported. 1 Clock scaling is supported. == ============================ The file is read only. What: /sys/bus/platform/drivers/ufshcd/*/capabilities/write_booster What: /sys/bus/platform/devices/*.ufs/capabilities/write_booster Date: August 2022 Contact: Daniil Lunev <dlunev@chromium.org> Description: Indicates status of Write Booster. == ============================ 0 Write Booster can not be enabled. 1 Write Booster can be enabled. == ============================ The file is read only.