sunxi: Add i2c support

Add support for the i2c controller found on all Allwinner sunxi SoCs,
this is the same controller as found on the Marvell orion5x and kirkwood
SoC families, with a slightly different register layout, so this patch uses
the existing mvtwsi code.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Acked-By: Prafulla Wadaskar <prafulla@marvell.com>
Acked-by: Heiko Schocher <hs@denx.de>
[ ijc -- updated u-boot-spl-fel.lds ]
sunxi: Add axp209 pmic support

Add support for the x-powers axp209 pmic which is found on most A10, A13 and
A20 boards.

And enable AXP209 support for the Cubietruck and Cubieboard boards.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
sunxi: Add axp152 pmic support

Add support for the x-powers axp152 pmic which is found on most A10s boards
and enable it for the r7-tv-dongle board.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
sunxi: Fix reset hang on sun5i

Do the same as the Linux kernel does, this fixes the SoC hanging on reset
about 50% of the time.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
sunxi: use random parts of SID to set ethaddr

Similar to the USB NIC found on OMAP5uEVM, PandaBoard and BeagleBoard-XM
boards, the sunxi SoCs have a NIC onboard without an embedded MAC address.

Just like the omap used on these boards, the sunxi SoCs do have a unique chip
id, in the form of the 128 bit SID register:
http://linux-sunxi.org/SID_Register_Guide

So mimick the BeagleBoard-XM board code (commit 548a64d8) and use the chip id
to generate a unique fixed MAC address.

We check for the SID not being all 0, since some early A20 batches
shipped without having there SID programmed.

Note we use specific parts of the 128 bits, since some parts indicate the
SoC family / revision, and thus are fixed. The algorithm for this was taken
from the linux-sunxi.org kernels.

Signed-off-by: Jonathan Liu <net147@gmail.com>
[hdegoede@redhat.com: Expanded the commit message with some more info]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
sunxi: add Cubieboard2 support

This is a sun7i (A20) based followup to the sun4i (A10)
Cubieboard. It has GMAC using MII mode.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
sunxi: add gpio driver

This patch enables CONFIG_CMD_GPIO for the Allwinner (sunxi) platform as well
as providing the common gpio API (gpio_request/free, direction in/out, get/set
etc).

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ma Haijun <mahaijuns@gmail.com>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: Henrik Nordström <henrik@henriknordstrom.net>
Cc: Tom Cubie <Mr.hipboi@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
sunxi: use setbits_le32 to enable the DMA clock

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
mtd: cfi_flash: fix clang warning

clang warns this check is silly; it is since s is
a local variable.

u-boot/drivers/mtd/cfi_flash.c:2363:13: warning: comparison of
  array 's' not equal to a null pointer is always true
  else if ((s != NULL) && (strcmp(s, "yes") == 0)) {

cc: Stefan Roese <sr@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
lib: div64: add missing include

Include the function its prototype to prevent the warning
that it has no prototype.

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
common: commands: make commands static

Since most commands are not public, make them static. This
prevents warnings that no common prototype is available.

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
common: board_f: cosmetic use __weak for leds

First of all this looks a lot better, but it also
prevents a gcc warning (W=1), that the weak function
has no previous prototype.

cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Acked-by: Simon Glass <sjg@chromium.org>
dm: add missing includes

lists.c / root.c do not include their own header and they
could potentially implement a different function. Therefore
actually include the headers.

cc: sjg@chromium.org
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Acked-by: Simon Glass <sjg@chromium.org>
common:splash: use __weak

This not only looks a bit better it also prevents a
warning with W=1 (no previous prototype).

cc: agust@denx.de
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
lib:lmb: use __weak

This not only looks a bit better it also prevents a
warning with W=1 (no previous prototype).

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
common: main.c: make show_boot_progress __weak

This not only looks a bit better it also prevents a
warning with W=1 (no previous prototype).

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
Acked-by: Simon Glass <sjg@chromium.org>
lib:sha1: remove unused constant

This prevents a clang warning.
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
env_callback.h: spl: mark callback as maybe_unused

When static inline is used in a header file the function
should preferably be inlined and if not possible made a
static function. When declared inside a c file there is a
static function, which might be inlined. Since SPL uses a
define to declare the static inline it becomes part of the
c file although it is declared in a header and clang will
warn that you have introduced unused static functions. Add
maybe_unused to prevent such warnings.

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
lib:vsprintf: reduce scope of pack_hex_byte

pack_hex_byte is only used when CONFIG_CMD_NET is
defined so limit it to that scope. This prevents
a clang warning.

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
dirvers: mmc: use __weak

use weak instead of alias to prevent some clang warnings.
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>