linux/drivers/usb/core
Heikki Krogerus 289fcff4bc usb: add bus type for USB ULPI
UTMI+ Low Pin Interface (ULPI) is a commonly used PHY
interface for USB 2.0. The ULPI specification describes a
standard set of registers which the vendors can extend for
their specific needs. ULPI PHYs provide often functions
such as charger detection and ADP sensing and probing.

There are two major issues that the bus type is meant to
tackle:

Firstly, ULPI registers are accessed from the controller.
The bus provides convenient method for the controller
drivers to share that access with the actual PHY drivers.

Secondly, there are already platforms that assume ULPI PHYs
are runtime detected, such as many Intel Baytrail based
platforms. They do not provide any kind of hardware
description for the ULPI PHYs like separate ACPI device
object that could be used to enumerate a device from.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: David Cohen <david.a.cohen@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-13 12:04:55 -05:00
..
buffer.c usb: core: buffer: smallest buffer should start at ARCH_DMA_MINALIGN 2015-01-09 10:21:31 -08:00
config.c usb-core bInterval quirk 2014-08-01 15:47:05 -07:00
devices.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
devio.c drivers/usb/core: devio.c: Removed an uneeded space before tab 2015-04-10 14:00:22 +02:00
driver.c USB: add flag for HCDs that can't receive wakeup requests (isp1760-hcd) 2015-01-31 09:05:06 -08:00
endpoint.c USB: core: be specific about attribute permissions 2013-08-25 15:12:03 -07:00
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-11-13 15:34:18 +09:00
generic.c staging: usbip: convert usbip-host driver to usb_device_driver 2014-02-07 10:54:30 -08:00
hcd-pci.c USB / PM: Drop CONFIG_PM_RUNTIME from the USB core 2014-12-04 00:51:54 +01:00
hcd.c USB: fix use-after-free bug in usb_hcd_unlink_urb() 2015-01-31 09:05:06 -08:00
hub.c usb: core: hub: use new USB_RESUME_TIMEOUT 2015-04-07 12:58:36 -05:00
hub.h usb: hub: convert khubd into workqueue 2014-09-23 22:33:19 -07:00
Kconfig usb: add bus type for USB ULPI 2015-05-13 12:04:55 -05:00
Makefile USB: core: remove CONFIG_USB_DEBUG usage 2013-12-21 16:01:00 -08:00
message.c USB: don't cancel queued resets when unbinding drivers 2015-01-25 20:54:17 +08:00
notify.c
otg_whitelist.h USB: Add OTG PET device to TPL 2015-01-25 21:20:42 +08:00
port.c USB / PM: Drop CONFIG_PM_RUNTIME from the USB core 2014-12-04 00:51:54 +01:00
quirks.c USB: Add OTG PET device to TPL 2015-01-25 21:20:42 +08:00
sysfs.c USB / PM: Drop CONFIG_PM_RUNTIME from the USB core 2014-12-04 00:51:54 +01:00
urb.c usb: core: allow zero packet flag for interrupt urbs 2014-07-22 16:30:58 -07:00
usb-acpi.c usb: find internal hub tier mismatch via acpi 2014-05-27 16:38:52 -07:00
usb.c USB: Move usb_disabled() towards top of the file 2015-03-26 10:48:22 +01:00
usb.h USB / PM: Drop CONFIG_PM_RUNTIME from the USB core 2014-12-04 00:51:54 +01:00