OFDEVICE decides whether or not we compile in support for probing
devices from the devicetree. Let the user decide this explicitly.
This makes the oftree, of_node and of_property commands independent
of devicetree device support since being able to manipulate
devicetrees has nothing to do with probing devices from the devicetree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In order to be able to handle multiple devicetrees, do not assume
the tree to be unflattened is the barebox internal one. Instead,
just return a pointer to it and assign the barebox internal root_node
external to the unflatten function.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The allnodes list makes it hard to handle multiple devicetrees. Having
a list to iterate over all nodes of a tree is still good to have though.
This patch uses the list_head of the root node as the head of the list.
This way the root node is no longer part of the list, but when iterating
over a tree the root node is not interesting anyway.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
of_find_node_by_path iterates over the allnodes list. Depending on
where the node we look for is, this can be significantly slower than
using the tree structure to look for a node, so iterate over the tree
instead.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch fixes following warning:
drivers/w1/w1.c: In function 'w1_found':
drivers/w1/w1.c:471: warning: integer constant is too large for 'long' type
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch fixes following warning:
drivers/mtd/nand/nand_write.c: In function 'nand_do_write_ops':
drivers/mtd/nand/nand_write.c:272: warning: 'ret' may be used uninitialized in this function
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since recently we check for the page being written for not being
empty and do not actually write it when it is. This fails for a
freshly created flash bad block table when all blocks are good.
In this case the bbt code will try to write an empty page, but
with the BBT marker in OOB. This page never gets written, so the
BBT code will not find a bad block table during next start up and
writes it again. Fix this by checking if we want to write OOB data,
if we do, then write the page, even if the data is empty.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
do not try to read the status in force mode
the link is up
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Do not write pages which only contain 0xff. UBI expects pages which
seem empty to be writable. This got lost with:
| commit 3139c3e9a6
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date: Thu Nov 29 11:16:40 2012 +0100
|
| mtd core: call driver write function with complete buffer
|
| mtd->write is supposed to loop around pages internally, no need
| to do this in mtd_write. This fixes a huge write performance drop
| with the m25p80 driver when it was converted to a mtd driver recently.
| Since mtd->writesize is 1 for this driver mtd_write ended up doing
| single byte writes on the flash.
Introduce mtd_all_ff as a global function since UBI currently has its own
implementation.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
RTS is an output. Either flow control is used and you care about the state or
it is not used and you don't care. So setting it to active does no harm in
either case. This is inline with what Linux does.
Mandatory for Highbank as example
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch provides rename MFD-related symbols for using MFD-prefix.
Additionally, sorting mfd/Kconfig and mfd/Makefile records.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds USB gadget support to the i.MX chipidea driver. Basically
we have to add a register function to the fsl udc driver and call
this from the chipidea driver if device mode is selected.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
CFI Flash is currently handled outside the mtd layer which makes it
a special case. Integrate it into mtd so that we get rid of this
special status.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of dereferencing struct mtd_info members directly use
the wrapper functions which have an additional check if the
callback exists if it is optional, like mark_bad or is_bad.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Kernel has mtd_read, mtd_write, mtd_erase and mtd_block_markbad.
Add these functions to barebox aswell to make future mtd synchronizations
with the kernel easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Alexander Shiyan
Marc Kleine-Budde
Jean-Christophe PLAGNIOL-VILLARD
Hubert Feurstein
Rob Herring