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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,315 @@ | ||
| What: /sys/class/regulator/.../state | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| state. This holds the regulator output state. | ||
|
|
||
| This will be one of the following strings: | ||
|
|
||
| 'enabled' | ||
| 'disabled' | ||
| 'unknown' | ||
|
|
||
| 'enabled' means the regulator output is ON and is supplying | ||
| power to the system. | ||
|
|
||
| 'disabled' means the regulator output is OFF and is not | ||
| supplying power to the system.. | ||
|
|
||
| 'unknown' means software cannot determine the state. | ||
|
|
||
| NOTE: this field can be used in conjunction with microvolts | ||
| and microamps to determine regulator output levels. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../type | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| type. This holds the regulator type. | ||
|
|
||
| This will be one of the following strings: | ||
|
|
||
| 'voltage' | ||
| 'current' | ||
| 'unknown' | ||
|
|
||
| 'voltage' means the regulator output voltage can be controlled | ||
| by software. | ||
|
|
||
| 'current' means the regulator output current limit can be | ||
| controlled by software. | ||
|
|
||
| 'unknown' means software cannot control either voltage or | ||
| current limit. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../microvolts | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| microvolts. This holds the regulator output voltage setting | ||
| measured in microvolts (i.e. E-6 Volts). | ||
|
|
||
| NOTE: This value should not be used to determine the regulator | ||
| output voltage level as this value is the same regardless of | ||
| whether the regulator is enabled or disabled. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../microamps | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| microamps. This holds the regulator output current limit | ||
| setting measured in microamps (i.e. E-6 Amps). | ||
|
|
||
| NOTE: This value should not be used to determine the regulator | ||
| output current level as this value is the same regardless of | ||
| whether the regulator is enabled or disabled. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../opmode | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| opmode. This holds the regulator operating mode setting. | ||
|
|
||
| The opmode value can be one of the following strings: | ||
|
|
||
| 'fast' | ||
| 'normal' | ||
| 'idle' | ||
| 'standby' | ||
| 'unknown' | ||
|
|
||
| The modes are described in include/linux/regulator/regulator.h | ||
|
|
||
| NOTE: This value should not be used to determine the regulator | ||
| output operating mode as this value is the same regardless of | ||
| whether the regulator is enabled or disabled. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../min_microvolts | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| min_microvolts. This holds the minimum safe working regulator | ||
| output voltage setting for this domain measured in microvolts. | ||
|
|
||
| NOTE: this will return the string 'constraint not defined' if | ||
| the power domain has no min microvolts constraint defined by | ||
| platform code. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../max_microvolts | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| max_microvolts. This holds the maximum safe working regulator | ||
| output voltage setting for this domain measured in microvolts. | ||
|
|
||
| NOTE: this will return the string 'constraint not defined' if | ||
| the power domain has no max microvolts constraint defined by | ||
| platform code. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../min_microamps | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| min_microamps. This holds the minimum safe working regulator | ||
| output current limit setting for this domain measured in | ||
| microamps. | ||
|
|
||
| NOTE: this will return the string 'constraint not defined' if | ||
| the power domain has no min microamps constraint defined by | ||
| platform code. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../max_microamps | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| max_microamps. This holds the maximum safe working regulator | ||
| output current limit setting for this domain measured in | ||
| microamps. | ||
|
|
||
| NOTE: this will return the string 'constraint not defined' if | ||
| the power domain has no max microamps constraint defined by | ||
| platform code. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../num_users | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| num_users. This holds the number of consumer devices that | ||
| have called regulator_enable() on this regulator. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../requested_microamps | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| requested_microamps. This holds the total requested load | ||
| current in microamps for this regulator from all its consumer | ||
| devices. | ||
|
|
||
|
|
||
| What: /sys/class/regulator/.../parent | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Some regulator directories will contain a link called parent. | ||
| This points to the parent or supply regulator if one exists. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_mem_microvolts | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_mem_microvolts. This holds the regulator output | ||
| voltage setting for this domain measured in microvolts when | ||
| the system is suspended to memory. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to memory voltage defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_disk_microvolts | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_disk_microvolts. This holds the regulator output | ||
| voltage setting for this domain measured in microvolts when | ||
| the system is suspended to disk. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to disk voltage defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_standby_microvolts | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_standby_microvolts. This holds the regulator output | ||
| voltage setting for this domain measured in microvolts when | ||
| the system is suspended to standby. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to standby voltage defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_mem_mode | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_mem_mode. This holds the regulator operating mode | ||
| setting for this domain when the system is suspended to | ||
| memory. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to memory mode defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_disk_mode | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_disk_mode. This holds the regulator operating mode | ||
| setting for this domain when the system is suspended to disk. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to disk mode defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_standby_mode | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_standby_mode. This holds the regulator operating mode | ||
| setting for this domain when the system is suspended to | ||
| standby. | ||
|
|
||
| NOTE: this will return the string 'not defined' if | ||
| the power domain has no suspend to standby mode defined by | ||
| platform code. | ||
|
|
||
| What: /sys/class/regulator/.../suspend_mem_state | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_mem_state. This holds the regulator operating state | ||
| when suspended to memory. | ||
|
|
||
| This will be one of the following strings: | ||
|
|
||
| 'enabled' | ||
| 'disabled' | ||
| 'not defined' | ||
|
|
||
| What: /sys/class/regulator/.../suspend_disk_state | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_disk_state. This holds the regulator operating state | ||
| when suspended to disk. | ||
|
|
||
| This will be one of the following strings: | ||
|
|
||
| 'enabled' | ||
| 'disabled' | ||
| 'not defined' | ||
|
|
||
| What: /sys/class/regulator/.../suspend_standby_state | ||
| Date: May 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Liam Girdwood <lg@opensource.wolfsonmicro.com> | ||
| Description: | ||
| Each regulator directory will contain a field called | ||
| suspend_standby_state. This holds the regulator operating | ||
| state when suspended to standby. | ||
|
|
||
| This will be one of the following strings: | ||
|
|
||
| 'enabled' | ||
| 'disabled' | ||
| 'not defined' |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| What: /sys/dev | ||
| Date: April 2008 | ||
| KernelVersion: 2.6.26 | ||
| Contact: Dan Williams <dan.j.williams@intel.com> | ||
| Description: The /sys/dev tree provides a method to look up the sysfs | ||
| path for a device using the information returned from | ||
| stat(2). There are two directories, 'block' and 'char', | ||
| beneath /sys/dev containing symbolic links with names of | ||
| the form "<major>:<minor>". These links point to the | ||
| corresponding sysfs path for the given device. | ||
|
|
||
| Example: | ||
| $ readlink /sys/dev/block/8:32 | ||
| ../../block/sdc | ||
|
|
||
| Entries in /sys/dev/char and /sys/dev/block will be | ||
| dynamically created and destroyed as devices enter and | ||
| leave the system. | ||
|
|
||
| Users: mdadm <linux-raid@vger.kernel.org> |
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