The previous text confused users by not describing the very common (e.g. x86 PC) sitations where no PHY driver is necessary. Signed-off-by: George Spelvin <linux@xxxxxxxxxxx> --- Just for example, here's some alternate, stronger wording. I don't know if this is true, either. Use whichever you prefer. drivers/usb/phy/Kconfig | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7ef3eb8..6558c3a 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. - - The following drivers add support for such PHY devices. + 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 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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
