Commit Graph

556 Commits

Author SHA1 Message Date
Masahiro Yamada
5d97dff042 treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>
Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-23 22:25:27 -04:00
Masahiro Yamada
1221ce459d treewide: replace #include <asm/errno.h> with <linux/errno.h>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content.  (both just wrap <asm-generic/errno.h>)

Replace all include directives for <asm/errno.h> with <linux/errno.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-23 17:55:42 -04:00
Masahiro Yamada
8319aeb1da usb: squash lines for immediate return
This makes functions much simpler.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-09-23 17:53:48 -04:00
Masahiro Yamada
4052734273 usb: replace ehci_*_remove() with usb_deregister()
The remove callbacks of EHCI drivers are often just a wrapper of
ehci_deregister.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
2016-09-23 17:53:46 -04:00
Kever Yang
f7bb27a577 usb: host: add Kconfig for USB_XHCI_ROCKCHIP
Add a Kconfig for Rockchip xhci controller.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Marek Vasut <marex@denx.de>
2016-09-22 07:36:58 -06:00
MengDongyang
b44566c4ce usb: xhci-rockchip: add rockchip dwc3 controller driver
This patch add support for rockchip dwc3 controller, which corresponding
to the two type-C port on rk3399 evb.
Only support usb2.0 currently for we have not enable the usb3.0 phy
driver and PD(fusb302) driver.

Signed-off-by: MengDongyang <daniel.meng@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-09-22 07:32:22 -06:00
Masahiro Yamada
47a79f657e usb: uniphier: remove UniPhier xHCI driver and select DM_USB
This driver has not been converted to Driver Model, and it is an
obstacle to migrate other block device drivers.  Remove it for now.

The UniPhier SoCs already use a DM-based EHCI driver, so now
ARCH_UNIPHIER can select DM_USB.

These two changes must be done atomically because removing the
legacy driver causes a build error.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2016-09-14 22:54:19 +09:00
Wenyou Yang
17b68b5a58 dm: atmel: Add driver model support for the ehci driver
Add driver model support while retaining the existing legacy code.
This allows the driver to support boards that have converted to
driver model as well as those that have not.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:58:04 +02:00
Rajesh Bhagat
707c866f3d usb: xhci: fsl: Add code to use CONFIG_DM_USB
Adds code to use driver model for USB XHCI FSL driver

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-08-07 21:55:43 +02:00
Rajesh Bhagat
ba699a5f91 usb: ehci: fsl: Add code to use CONFIG_DM_USB
Adds code to use driver model for USB EHCI FSL driver

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-08-07 21:55:43 +02:00
Rajesh Bhagat
1e61ce9f7e drivers: usb: fsl: Make function for initialization to use in CONFIG_DM_USB
Moves code from ehci_hcd_init to new function ehci_fsl_init
which can be re-used in CONFIG_DM_USB.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-08-07 21:55:43 +02:00
Masahiro Yamada
2b58e1b76d usb: add (move) CONFIG_USB_HOST to Kconfig
The meaning of CONFIG_USB in U-Boot is different from that in Linux.

As you see in drivers/usb/Kconfig of Linux, CONFIG_USB enables the
USB host controller support, while CONFIG_USB_SUPPORT is used to
enable the whole of the USB sub-system.

When I added CONFIG_USB into Kconfig by commit 6e7e9294d3 ("usb:
add basic USB configs in Kconfig"), I planned to follow the Linux's
convention, i.e. CONFIG_USB to enable/disable the USB host support.

Then, commit 68f7c5db2d ("usb: Generic USB Kconfig option, that
fits both host and gadget and comments") changed the logic of the
CONFIG_USB to point to the whole of the USB sub-system.  As a result,
currently we do not have an option for USB host.

This commit adds CONFIG_USB_HOST, which will be useful to compile
in the USB host support code.

CONFIG_USB_HOST is not referenced at all, but strangely some boards
define it in board headers.  I removed them because USB_HOST will be
selected in Kconfig going forward.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-08-07 21:55:42 +02:00
Masahiro Yamada
96d8284bd5 usb: add CONFIG_USB_UHCI_HCD in Kconfig
There is no UHCI driver entry in Kconfig for now, but we have some
UHCI drivers, for example, LEON.  This is a placeholder in case we
want to move them to Kconfig in the future.

The help message was copied from Linux.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-08-07 21:55:42 +02:00
Masahiro Yamada
93cb82477d usb: add CONFIG_USB_OHCI_HCD in Kconfig
Add this option as a common config for all OHCI controllers.  Its
help message was copied from Linux.  Also, I moved it below EHCI
to respect the order in Linux's Kconfig.

Add CONFIG_USB_OHCI_HCD=y to axs103_defconfig, which is the only
user of OHCI_GENERIC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-08-07 21:55:42 +02:00
Peng Fan
bb42fb4f10 dm: ehci-mx6: support driver model
Support driver model for ehci mx6 driver.
Consolidate code to be shared between DM and non-DM, such as
introducing ehci_mx6_common_init.
For simplicity, some old fasion code are keeped for DM usage,
such as board_ehci_power and board_usb_phy_mode. And 'dr-mode',
usbphy and vbus handling code for DM is not added now.
These will be added in future patches.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Simon Glass <sjg@chromium.org>
2016-08-07 21:55:42 +02:00
Tom Rini
4711e7f7af Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2016-07-28 08:45:00 -04:00
Simon Glass
dec49e862e dm: zynq: usb: Convert to CONFIG_DM_USB
Convert zynq USB to driver model. Note this is tested on zynq-zybo only.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-27 14:15:54 -06:00
Simon Glass
911954859d dm: Use dm_scan_fdt_dev() directly where possible
Quite a few places have a bind() method which just calls dm_scan_fdt_dev().
We may as well call dm_scan_fdt_dev() directly. Update the code to do this.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-27 14:15:54 -06:00
Simon Glass
2e3f1ff63f dm: Convert users from dm_scan_fdt_node() to dm_scan_fdt_dev()
This new function is more convenient for callers, and handles pre-relocation
situations automatically.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-27 14:15:07 -06:00
Siva Durga Prasad Paladugu
2cdc778b62 usb: Kconfig: Add Kconfigs entry USB_EHCI_ZYNQ
Add Kconfig entry config option for USB_EHCI_ZYNQ
and update the same to enable for all zynq boards
which supports USB

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-07-22 14:06:11 +02:00
Stefan Agner
c4483093f3 usb: ehci-mx6: introduce config for high active power pin
Add a new config CONFIG_MXC_USB_OTG_HACTIVE which configures the
OTG Power Pin to be high active. Low active is the reset value
of the affected configuration register, hence the config option
is named by the non-reset configuration.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
2016-07-19 19:52:14 +02:00
Stefan Agner
9a88180bfb usb: ehci-mx6: configure power polarity in usb_power_config
USBNC_n_CTRL1 bit 9 actually controls the power pin polarity.
Rename UCTRL_PM to align reference manual and set the bit in
the appropriate callback usb_power_config.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
2016-07-19 19:52:14 +02:00
Stefan Agner
2deebe2481 usb: move CONFIG_USB_EHCI_MX7 to Kconfig
Create an entry for "config USB_EHCI_MX7" in Kconfig and
switch over to it for all boards.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
2016-07-19 19:52:14 +02:00
Peng Fan
57de41e9c9 ehci: mx7: fix otg id detection
The USBNC_PHYCFG2_ACAENB bit should be cleared to enable the
OTG ID detection, not set it. When the bit is set, the ACA
Resistance Detection is enabled, which disables the OTG ID
detection, because the internal pull up is off.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2016-06-25 00:57:10 +02:00
Peng Fan
429ff4473b ehci: mx7: fix usbnc_regs
There is a 4 bytes hole between phy_cfg2 and phy_status, fix the
usbnc_regs structure to include the hole.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2016-06-25 00:57:09 +02:00
Rajesh Bhagat
217d16973d usb: fsl: Fix NULL terminating issue for usb controller name string
Fixes NULL terminating issue for usb controller name string by using
sizeof operator.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-06-25 00:57:09 +02:00
Stephen Warren
135aa95002 clk: convert API to match reset/mailbox style
The following changes are made to the clock API:
* The concept of "clocks" and "peripheral clocks" are unified; each clock
  provider now implements a single set of clocks. This provides a simpler
  conceptual interface to clients, and better aligns with device tree
  clock bindings.
* Clocks are now identified with a single "struct clk", rather than
  requiring clients to store the clock provider device and clock identity
  values separately. For simple clock consumers, this isolates clients
  from internal details of the clock API.
* clk.h is split so it only contains the client/consumer API, whereas
  clk-uclass.h contains the provider API. This aligns with the recently
  added reset and mailbox APIs.
* clk_ops .of_xlate(), .request(), and .free() are added so providers
  can customize these operations if needed. This also aligns with the
  recently added reset and mailbox APIs.
* clk_disable() is added.
* All users of the current clock APIs are updated.
* Sandbox clock tests are updated to exercise clock lookup via DT, and
  clock enable/disable.
* rkclk_get_clk() is removed and replaced with standard APIs.

Buildman shows no clock-related errors for any board for which buildman
can download a toolchain.

test/py passes for sandbox (which invokes the dm clk test amongst
others).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-06-19 17:05:55 -06:00
Peng Fan
1e6fb0e367 usb: ehci: only shutdown opened controller
If the usb controller is not running, no need to shutdown it,
otherwise `usb stop` complains about:
"EHCI failed to shut down host controller".

To i.MX7D SDB, there are two usb ports, one Host, one OTG.
If we only plug one udisk to the Host port and then `usb start`,
the OTG controller for OTG port does not run actually. Then,
if `usb stop`, the OTG controller for OTG port will also be
shutdown, but it is not running.

This patch adds a check to only shutdown the running controller.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: "Stefan Brüns" <stefan.bruens@rwth-aachen.de>
Cc: Stephen Warren <swarren@nvidia.com>
2016-06-18 00:49:00 +02:00
Sriram Dash
ef53b8c4ce usb: xhci: fsl: Add workaround for USB erratum A008751
This patch is doing the following:
1. Implementing the errata for LS2080.
2. Adding fixup for fdt for LS2080.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
2016-06-13 15:16:46 +02:00
Masahiro Yamada
10db750036 usb: move CONFIG_USB_XHCI_DWC3 to Kconfig
Create an entry for "config USB_XHCI_DWC3" in Kconfig and
switch over to it for all boards.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-06-04 00:43:53 +02:00
Masahiro Yamada
0a8cc1a3a4 usb: move CONFIG_USB_XHCI to Kconfig with renaming
Move CONFIG_USB_XHCI to defconfig files for all boards, renaming it
into CONFIG_USB_XHCI_HCD.

As commented in the help of "config USB_XHCI" entry, this has been
a TODO for a long time; now CONFIG_USB_XHCI_HCD and CONFIG_USB_XHCI
have been unified in favor of the former.

Note:
Some boards define CONFIG_USB_XHCI in their headers without
CONFIG_USB, which does not meet the "depends on" in Kconfig.
I added CONFIG_USB=y for those boards when converting.
Otherwise, they would fail to build.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-06-04 00:43:53 +02:00
Stefan Roese
2bf352f0c1 usb: dwc2: Add delay to fix the USB detection problem on SoCFPGA
With patch c998da0d (usb: Change power-on / scanning timeout handling),
the USB scanning is started earlier and with a smaller timeout. This
resulted on SoCFPGA (using the DWC2 driver) in some USB sticks not
getting detected any more. This patch now adds a 1 second delay (in
the host mode only) to the DWC2 driver before the scanning is started.
With this delay, now all problematic USB keys are detected successfully
again. And there is no need any more to change the delay / timeout
in the common USB code (usb_hub.c).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Marek Vasut <marex@denx.de>
2016-05-06 20:06:56 +02:00
Stefan Agner
79d867c2e6 usb: ehci-mx6: allow board_ehci_hcd_init to fail
There could be runtime determined board specific reason why a EHCI
initialization fails (e.g. ENODEV if a Port is not available). In
this case, properly return the error code.
While at it, that function (board_ehci_hcd_init) has actually two
documentation blocks... Use the correct function name for the
documentation block of board_usb_phy_mode.

Signed-off-by: Stefan Agner <stefan@agner.ch>
2016-05-06 18:33:26 +02:00
Marek Vasut
e96e064f51 usb: dwc2: Init desc_before_addr
Initialize desc_before_addr, otherwise the USB core won't send the
first 64B Get Device Descriptor request in common/usb.c function
usb_setup_descriptor() . There are some USB devices which expect
this sequence and otherwise can misbehave.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Tom Rini <trini@konsulko.com>
2016-05-03 19:21:18 +02:00
Marek Vasut
b4fbd089e4 usb: dwc2: Make OC protection configurable
Introduce a new flag in the controller private data, which allows selectively
disabling the OC protection. Use the standard 'disable-over-current' OF prop
to set this flag. This OC protection must be disabled on EBV SoCrates rev 1.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
2016-05-03 19:21:18 +02:00
Marek Vasut
618da5630b usb: dwc2: Pull Ext VBUS macro from dwc_otg_core_init()
Introduce a boolean flag in the dwc2 controller private data and set
it according to the macro (for now) instead of having this macro
directly in the dwc_otg_core_init(). This will let us configure the
flag from DT or such later on, if needed.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
2016-05-03 19:21:17 +02:00
Marek Vasut
559019894b usb: dwc2: Pass private data into dwc_otg_core_init()
Pass the whole bulk of private data instead of just the regs,
since the private data will soon contain important configuration
flags.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
2016-05-03 19:21:17 +02:00
Hans de Goede
fb3bfbb24a sunxi: H3: Do not clear usb companion clk-gate / reset on remove
On the H3 we need to enable the clk and de-assert the reset of the
companion to be able to talk to the actual usb host controller.

Before this commit we were also disabling the companion clk-gate /
asserting its reset on remove, causing the later remove callback of
the companion itself to (sometimes) fail with:

ERROR: USB HC reset timed out!

This commit fixes this by not disabling the companion's clk-gate nor
asserting its reset on remove.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2016-04-12 08:58:03 +02:00
Sriram Dash
93eb8f39d2 drivers:usb:common:fsl-dt-fixup: Move device-tree fixup framework to common file
Move usb device-tree fixup framework from ehci-fsl.c to common place so
that it can be used by other drivers as well (xhci-fsl.c).

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@nxp.com>
Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Acked-by: Marek Vasut <marex@denx.de>
2016-04-10 17:18:42 +02:00
Mateusz Kulikowski
cfb3f1cd0e usb: ehci-hcd: Fix crash when no ops are provided to ehci_register()
This commit fixes crash on BananaPi (and possibly others)
casued by 3f9f8a5b83.

Crash reason:
When no ops were passed to ehci_register(), USB host driver caused
NULL pointer dereference.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
2016-04-10 17:18:42 +02:00
Mateusz Kulikowski
5a8221181e ehci: Add support for Qualcomm EHCI
This driver is able to reconfigure OTG controller into HOST mode.
Board can add board-specific initialization as board_prepare_usb().
It requires USB_ULPI_VIEWPORT enabled in board configuration.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:11 -04:00
Mateusz Kulikowski
d144f96a48 ehci-ci.h: drop generic USBCMD fields
Use definitions from ehci.h instead.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:11 -04:00
Mateusz Kulikowski
e162c6b1a7 usb: Rename ehci-fsl.h to ehci-ci.h
Most of ehci-fsl header describe USB controller
designed by Chipidea and used by various SoC vendors.

This patch renames it to a generic header: ehci-ci.h
Contents of file are not changed (so it contains several
references to freescale SoCs).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:10 -04:00
Mateusz Kulikowski
3f9f8a5b83 ehci-hcd: Add init_after_reset
Some host controllers need addidional initialization after ehci_reset()
In non-dm implementation it is possible to use CONFIG_EHCI_HCD_INIT_AFTER_RESET.
This patch adds similar option to ehci drivers using dm.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:08 -04:00
Chen-Yu Tsai
045ae7e339 sunxi: ohci: Add A83T compatible
We have a separate compatible for almost each SoC. Add one for the A83T.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-03-31 17:04:13 +02:00
Chen-Yu Tsai
3655f287b6 sunxi: ehci: Add A83T compatible
We have a separate compatible for almost each SoC. Add one for the A83T.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2016-03-31 17:04:11 +02:00
Hans de Goede
948603d4d6 sunxi: Fix 2nd usb controller on sun4i/sun7i no longer working
The 2nd usb controller on sun4i/sun7i has its base address 0x8000
bytes from the 1st one, rather then 0x1000. Also the ahb clk gates
are interleaved with the ohci clk-gates introducing a hole between
the clks for usb1 and usb2.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2016-03-23 22:04:13 +01:00
Ted Chen
1b108880e6 usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.
Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>
2016-03-20 18:00:45 +01:00
Simon Glass
9b9775687f dm: usb: Unbind old block devices when shutting down USB
When 'usb start' is used, block devices are created for any USB flash sticks
and disks, etc. When 'usb stop' is used, these block devices are currently
not removed.

We don't want old block devices hanging around since they can still be
visible to U-Boot. Therefore, when USB is shut down, remove and unbind all
the block devices created by the USB subsystem.

Possibly we should unbind all devices which don't cause problems by being
unbound. Most likely we can remove everything except USB controllers, hubs
and emulators. We can consider that later.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
2016-03-17 21:27:39 -06:00
Dinh Nguyen
b5ab663a69 usb: dwc2: disable erroneous overcurrent condition
For the case where an external VBUS is used, we should enable the external
VBUS comparator in the driver. This would prevent an unnecessary overcurrent
error which would then disable the host port.

The overcurrent condition was happening on the SoCFPGA Cyclone5 devkit, thus
USB was not working on the devkit. This patch fixes that problem.

Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2016-03-05 02:21:36 +01:00