diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/phy/Kconfig | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7ef3eb8617a..2311b1e4e43 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -4,11 +4,17 @@ menuconfig USB_PHY bool "USB Physical Layer drivers" help - USB controllers (those which are host, device or DRD) need a - device to handle the physical layer signalling, commonly called - a PHY. + Most USB controllers have the physical layer signalling part + (commonly called a PHY) built in. However, dual-role devices + (a.k.a. USB on-the-go) which support being USB master or slave + with the same connector often use an external PHY. - The following drivers add support for such PHY devices. + The drivers in this submenu add support for such PHY devices. + They are not needed for standard master-only (or the vast + majority of slave-only) USB interfaces. + + If you're not sure if this applies to you, it probably doesn't; + say N here. if USB_PHY |