diff options
| -rw-r--r-- | drivers/staging/greybus/Documentation/sysfs-bus-greybus | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus index 62d03afe9c85..e202eac1f001 100644 --- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus +++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus @@ -102,17 +102,18 @@ Date: March 2016 KernelVersion: 4.XX Contact: Greg Kroah-Hartman <greg@kroah.com> Description: - This reflects the power state of a Greybus Interface. If the - value read from it is "on", then power is currently supplied to - the Interface. Otherwise this will read "off" and the power is - currently not supplied to the Interface. + This file reflects the power state of a Greybus interface. If + the value read from it is "on", then power is currently + supplied to the interface. Otherwise it will read "off" and + power is currently not supplied to the interface. If the value read is "off", then writing "on" (or '1', 'y', - 'Y') to it will enable power to the Interface. If the value - read is "on", then writing "off" (or '0', 'n', 'N') to it will - disable power to the Interface. + 'Y') to this file will enable power to the interface and an + attempt to boot and possibly enumerate it will be made. Note + that on errors, the interface will again be powered down. - Writing the currently read value to it has no effect. + If the value read is "on", then writing "off" (or '0', 'n', + 'N') to this file will power down the interface. What: /sys/bus/greybus/devices/N-M.I/product_id Date: October 2015 |