This driver is designed in a generic manner, so clocks should be
handled genericly as well.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

BUILD_BUG_* macros have been defined in several headers.  It would
be nice to collect them in include/linux/bug.h like Linux.

This commit is cherry-picking useful macros from include/linux/bug.h
of Linux 4.4.

I did not import BUILD_BUG_ON_MSG() because it would not work if it
is used with include/common.h in U-Boot.  I'd like to postpone it
until the root cause (the "error()" macro in include/common.h causes
the name conflict with "__attribute__((error()))") is fixed.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

Use existing library function to poll bit(s).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>

Use existing library function to poll bit(s).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Tested-by: Sylvain Lemieux <slemieux@tycoint.com>

Use existing library function to poll bit(s).

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>

Add a compatible string to allow this to be specified in the device tree
if needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

This patch adds driver support for the Realtek RTL8152B/RTL8153 USB
network adapters.

Signed-off-by: Ted Chen <tedchen at realtek.com>
[swarren, fixed a few compiler warnings]
[swarren, with permission, converted license header to SPDX]
[swarren, removed printf() spew during probe()]
Signed-off-by: Stephen Warren <swarren at nvidia.com>

USB protocol allows for 16 IN and 16 OUT endpoints (USB 2.0 Spec,
8.3.2.2 Endpoint Field). A function may have an EP 1 for both IN and OUT,
so these two should be kept separate. As EPs are either BULK or INTERRUPT
(or ISO), it is fine to have one array per direction for all transfer
types (also see e236519b7365ef75c5da6a5623f0b03d9c00cfae).

USB device address is 7 bits, so a bus may have more than 16 devices.
Check the device number, as the DWC2 driver only supports BULK/ISO for
the first 16 devices.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>

CSPLITs for INTERRUPT transactions have to be scheduled in each microframe
following the SSPLIT. INTERRUPT transfers are executed in the next even/
odd microframe depending on the HCCHAR_ODDFRM flag.

As there are no handshakes for INTERRUPT SSPLITs the SSPLIT may have
failed (transport error) without the error being detected by the host
driver. If the last CSPLIT is not received within 4 microframes after the
SSPLIT there was a transaction error and the complete transaction has
to be restarted.

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>