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-rw-r--r--drivers/usb/core/Kconfig13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index c15621d64579..fee864c9e62d 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -111,14 +111,16 @@ config USB_OTG
config USB_OTG_WHITELIST
bool "Rely on OTG Targeted Peripherals List"
- depends on USB_OTG
- default y
+ depends on USB_OTG || EMBEDDED
+ default y if USB_OTG
+ default n if EMBEDDED
help
If you say Y here, the "otg_whitelist.h" file will be used as a
product whitelist, so USB peripherals not listed there will be
rejected during enumeration. This behavior is required by the
USB OTG specification for all devices not on your product's
- "Targeted Peripherals List".
+ "Targeted Peripherals List". "Embedded Hosts" are likewise
+ allowed to support only a limited number of peripherals.
Otherwise, peripherals not listed there will only generate a
warning and enumeration will continue. That's more like what
@@ -127,9 +129,10 @@ config USB_OTG_WHITELIST
config USB_OTG_BLACKLIST_HUB
bool "Disable external hubs"
- depends on USB_OTG
+ depends on USB_OTG || EMBEDDED
help
If you say Y here, then Linux will refuse to enumerate
external hubs. OTG hosts are allowed to reduce hardware
- and software costs by not supporting external hubs.
+ and software costs by not supporting external hubs. So
+ are "Emedded Hosts" that don't offer OTG support.