ARM: MXS: introduce stmp device support ...

MXS specific devices have some common infrastructure in the kernel
known as STMP devices. We have the same in barebox, but with a
mxs_ prefix instead of a stmp_ prefix. As some STMP devices are
also found on i.MX6 move the common infrastructure out of MXS
specific files and use the stmp_ prefix.

This is done in preparation for i.MX6 NAND support.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: update to v3.11-rc1 ...

This updates the NAND stuff to Linux-3.11-rc1. It is synchronized
as best as we can get:

- locks removed
- The splitting in different files we had to better support different
  features has been dropped. Instead this is now done mostly with the
  use of __maybe_unused

Some barebox adjustments are forward ported, like:

- Allow partial page writes
- Optionally allow to erase bad blocks
- check for all_ff before writing a page

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: introduce mtd_read_oob and mtd_write_oob ...

Directly copied from the Kernel as of 3.11-rc1

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: introduce ecc strength ...

This introduces the ecc stength fields in the structures and fills
them in, but leaves them unused right now.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: rename mtd_read_oob ...

There is the same function name in the Kernel but with different
semantics. Rename to avoid naming conflicts when we update the
mtd support from the kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

string: introduce memchr_inv ...

Directly taken from Linux Kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: sync bbm.h with Linux Kernel ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: rename MTD_OOB_* to MTD_OPS_* ...

To sync with the Linux kernel.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: write BBM to OOB even with flash-based BBT ...

This is based on Linux:

commit e2414f4
Author: Brian Norris <computersforpeace@gmail.com>
Date:   Mon Feb 6 13:44:00 2012 -0800

Currently, the flash-based BBT implementation writes bad block data only
to its flash-based table and not to the OOB marker area. Then, as new bad
blocks are marked over time, the OOB markers become incomplete and the
flash-based table becomes the only source of current bad block
information. This becomes an obvious problem when, for example:

 * code accessing the flash cannot read the flash-based BBT format
 * BBT is corrupted and the flash must be rescanned for bad
   blocks; we want to remember bad blocks that were marked from Linux

So to keep the bad block markers in sync with the flash-based BBT, this
patch changes the default so that we write bad block markers to the proper
OOB area on each block in addition to flash-based BBT. Comments are
updated, expanded, and/or relocated as necessary.

The new flash-based BBT procedure for marking bad blocks:
 (1) erase the affected block, to allow OOB marker to be written cleanly
 (2) update in-memory BBT
 (3) write bad block marker to OOB area of affected block
 (4) update flash-based BBT
Note that we retain the first error encountered in (3) or (4), finish the
procedures, and dump the error in the end.

This should handle power cuts gracefully enough. (1) and (2) are mostly
harmless (note that (1) will not erase an already-recognized bad block).
The OOB and BBT may be "out of sync" if we experience power loss bewteen
(3) and (4), but we can reasonably expect that on next boot, subsequent
I/O operations will discover that the block should be marked bad again,
thus re-syncing the OOB and BBT.

Note that this is a change from the previous default flash-based BBT
behavior.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand_imx: Add devicetree probe support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: add mtd of helpers ...

Directly taken from the kernel

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: spi: Fix spi read procedure ...

Buffer for RX is set incorrectly.

barebox@Phytec phyCORE-i.MX27:/  spi -r 128 -v
device config
    bus_num       = 0
    max_speed_hz  = 1000000
    chip_select   = 0
    mode          = 0x0
    bits_per_word = 8

wrote 0 bytes
00000000:
read 128 bytes
00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................
unable to handle paging request at address 0x4dffd3d0
pc : [<a7f05ec4>]    lr : [<a7f05ebc>]
sp : a7fff890  ip : a7fff860  fp : a7f68820
r10: a6ffe9bc  r9 : 00000000  r8 : 00000001
r7 : a6ffe9ec  r6 : a6f00000  r5 : a6ffe9ec  r4 : a6ffe9e4
r3 : a6ffe9e4  r2 : a6ffe9e5  r1 : a6ffe9e4  r0 : 4dffd3cc
Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: mxs: make ssp gates parents of ssp dividers ...

When changing the rates of the ssp clocks we have to poll the
busy bit, but only when they are enabled. The current code can
not check this properly since the gates are registered as children
of the dividers. This has the effect that when the gate is disabled
the busy bit will be set forever resulting in a freezed system.

Fix this by making the gates parents of the dividers which allows
clk_is_enabled to return the correct result.

The Kernel has the same problem, but here the busy polling is
limited to 10ms, so probably noone noticed this.

The datasheet mentions that the ssp dividers shall only be changed
when the clocks are enabled. The kernel and barebox currently ignore
this. I don't know what effect violating this rule has.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX: Fix i.MX27 debug uart Kconfig entries ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: generate imx dcd.S files as *.dcd.S ...

The compiled in dcd images generate an intermediate assembly file. Instead
of generating them as *.S generate them as *.dcd.S to better identify them
as generated files. These are then added to .gitignore.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nand_base: add missing newline ...

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

friendlyarm-tiny210: do not restart barebox twice ...

The old way to boot tiny210 was to restart barebox after loading stage2 image.
This turned out to be unstable and stopped working after barebox refactoring.
Now jump to the same position in the loaded code instead of starting it from
the very beginning.

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Revert "ARM: i.MX27 pcm038: switch to multi image" ...

This reverts commit 08c0e20.

The external NAND boot code currently uses the _text linker variable
to determine a place for the image. This doesn't work with multi image
support which will link the binary at 0x0. Revert multi image support
for the pcm038 for now until a solution is found.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: at91: animeo IP: fix partition table ...

we now use a UBI Volume instead of user_block, kernel and root
the bootloader size is 320KiB not 256KiB

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

OF: base: initalize from node in of_find_node_with_property ...

This adds initialization of from device node with root_node if NULL
is passed. This corresponds to the behavior of all other node iterators.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

OF: base: fix iterator in of_get_next_available_child ...

of_get_next_available_child does not iterate but always tries the
same node over and over again. This first prepares the entry and
then uses list_for_each_entry_continue, instead of for_each_child_of_node
before.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

OF: base: fix inifinite looping in node iterators ...

of_find_node_by_name suffers from infinite looping, because it
does not check for root node of the tree iterated over. This
fixes this by checking for node->parent to determine whether
the last node has been reached.
Since of_tree_for_each_node does not iterate over the whole tree,
but only over the remaining nodes, rename it to
of_tree_for_each_node_from.

Reported-by: NISHIMOTO Hiroki <hiroki.nishimoto.if@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: i.MX6: Fix usbmisc label in devicetree ...

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pcm049: Add platformcode for omap4 framebuffer ...

For splashscreen support on pcm049, this patch adds omap4 framebuffer
platform data and configures display pd050vl1, g104x1, pm070wl4, pd104slf,
edt_etm0350G0dh6, edt_etm0430G0dh6, edt_etmv570G2dhu and edt_etm0700G0dh6

Also add extra  muxing and defconfig

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

tegra: add peripheral clocks ...

Only UART clocks are included for now, but the code should cover
other peripherals needs, too.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

tegra: add new clock framework driver ...

This removes the existing Tegra CAR driver and replaces it with code
ported from the Linux clock framework.

In the current state only the relevant PLLs are supported, but this is
no functional regression from the existing code.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

tegra: deduplicate clk defines ...

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: allow to instanciate clk mux without registering it ...

Allows to reuse clk mux code within other clocks.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: allow to instanciate clk gate without registering it ...

Allows to reuse the clk gate code within other clocks.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

tegra: change clocksource driver to be more lowlevel ...

In order to properly bring up the system PLLs we need a reliable
clocksource. To break the circular dependency between the clocksource
and the CAR driver, get the OSC frequency with a lowlevel function.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>