diff options
| author | Sam Protsenko <semen.protsenko@linaro.org> | 2016-03-25 16:39:47 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-03-25 15:29:48 -0400 |
| commit | f9d0fd8a566f78f27a510258c34b3526f9822e92 (patch) | |
| tree | 4af36808402c9111235efece9d5d87de14f31bce /drivers | |
| parent | a6164205ee933fa956d9f07f4ae08b39b64629e7 (diff) | |
usb: gadget: Move CONFIG_USB_GADGET to Kconfig
The description was borrowed from kernel. "tristate" type was changed
to "bool" (I believe we don't support modules for u-boot yet, right?).
CONFIG_USB_GADGET requires CONFIG_USB to be defined too, so add it along
as well.
Definitions were added to defconfig files in a way that
"make savedefconfig" generates exactly the same file as used defconfig.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
[trini: Add zynq_zc702 conversion]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 35 |
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index abb06fcfe5..7fa99c6891 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -88,4 +88,6 @@ endchoice endif +source "drivers/usb/gadget/Kconfig" + endif diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig new file mode 100644 index 0000000000..f4698f469e --- /dev/null +++ b/drivers/usb/gadget/Kconfig @@ -0,0 +1,35 @@ +# +# USB Gadget support on a system involves +# (a) a peripheral controller, and +# (b) the gadget driver using it. +# +# NOTE: Gadget support ** DOES NOT ** depend on host-side CONFIG_USB !! +# +# - Host systems (like PCs) need CONFIG_USB (with "A" jacks). +# - Peripherals (like PDAs) need CONFIG_USB_GADGET (with "B" jacks). +# - Some systems have both kinds of controllers. +# +# With help from a special transceiver and a "Mini-AB" jack, systems with +# both kinds of controller can also support "USB On-the-Go" (CONFIG_USB_OTG). +# + +menuconfig USB_GADGET + bool "USB Gadget Support" + help + USB is a master/slave protocol, organized with one master + host (such as a PC) controlling up to 127 peripheral devices. + The USB hardware is asymmetric, which makes it easier to set up: + you can't connect a "to-the-host" connector to a peripheral. + + U-Boot can run in the host, or in the peripheral. In both cases + you need a low level bus controller driver, and some software + talking to it. Peripheral controllers are often discrete silicon, + or are integrated with the CPU in a microcontroller. The more + familiar host side controllers have names like "EHCI", "OHCI", + or "UHCI", and are usually integrated into southbridges on PC + motherboards. + + Enable this configuration option if you want to run U-Boot inside + a USB peripheral device. Configure one hardware driver for your + peripheral/device side bus controller, and a "gadget driver" for + your peripheral protocol. |