Bit 7 of UCR3 is described in the i.MX reference manuals (with the exception
of i.MX1) as follows:
ADNIMP: Autobaud Detection Not Improved-. Disables new features of
autobaud detection (See Baud Rate Automatic Detection
Protocol, for more details).
0 Autobaud detection new features selected
1 Keep old autobaud detection mechanism
The "new features" mechanism occasionally causes the receiver to get out of sync
and continuously produces received characters of '0xff'.
In order to reproduce the problem:
$ cs0.baudrate=19200
- Change the terminal baudrate to 19200
- Type in the console and it should look good
- Change the terminal baudrate back to 115200
- Type 'b' in the console, then a stream of '0xff' is transmitted in loop
Setting the ADNIMP bit avoids the transmission of '0xff' in loop.
Also rename the bit definition as per the reference manual.
Tested on mx6q.
Based on a patch from Eric Nelson for U-boot.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We do not care about releasing the resources in the error
path, but at least check the return value of eth_register
and mdiobus_register.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The mxs nand driver has a calculation for the ecc strength.
This calculation was not used for some common nands and it
was assumed that 2k page nands always have a ecc strength
of 8. This is not true since there are devices with 224 bytes
of oob instread of 64 bytes. These allow for a greater ecc
strength. Since the kernel relies on the calculation and
we have to be consistent with the kernel use the calculcation
in barebox aswell and just remove our assumptions.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some users such as fs/nfs.c just save the pointer to the packet in the
handler and process it after net_poll() returns. This break when more than
one packet is received using the same buffer.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With CONFIG_PARTITION_NEED_MTD enabled we use mtd rather than devfs
directly to create partitions on mtd devices. Since:
| commit b32cd8df87
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date: Wed Apr 9 15:49:32 2014 +0200
|
| mtd: nand: bb: use mtd api directly
|
| The devfs layer just adds an addition indirection between mtd
| and the bb devices with no purpose. Drop it.
|
| Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The bad block aware device creation doesn't work if this option
is disabled. With this we remove CONFIG_PARTITION_NEED_MTD and always
use mtd partitions on mtd devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
RX DMA Head Descriptor Pointer can get 0 when there is a lot of traffic,
which results in a timeout error. A good way to provoke this error is by
sending lots of ARP requests. This patch makes sure that the RX DMA Head
Descriptor Pointer is set.
The origin driver, from which this is derived, already contains this fix.
Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Clock gates having the CLK_GATE_HIWORD_MASK flag set use the upper 16
bits of the register as a "write enable" mask for the value in the
lower 16 bits.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To avoid code duplication and make easier to introduce new flags.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a clk_gate_flags argument to clock gate creation functions
to allow the introduction of new clock gate modifiers.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds support for the Synopsys 10/100 Mbps Ethernet MAC used
on some ARC devices and on Rockchip SoCs.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We need list_for_each_entry_safe in dev_remove_bb_dev since the
list entries are removed during iteration over the list.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Provide minimal regulator support. Only supported operations are enabling
and disabling regulators. Association of devices with their regulators is
limited to devicetree only. If regulator support is disabled the API expands
to static inline stubs so consumers can still use the API.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When a mtd device can have bad blocks we want to create a
bb device, so do this automatically. This allows us to
drop bb device creation from the environment.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This refactors the code so that we get a mtd_add_bb which can
be used to create a bb dev on a mtd_info.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The devfs layer just adds an addition indirection between mtd
and the bb devices with no purpose. Drop it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Instead of just allowing to specify an OF path with additional
partname: property allow to specify a phandle to the partition
directly.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The upstream dts files do not contain the register shift. As
we have Omap specific init code anyway we can just set the register
shift from there instead of relying on the devicetree properties.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Also remove the unnecessary check for xzalloc failure.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
No need to store init() function in the driver private structure
since it called only once during startup.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Fabio Estevam
Sascha Hauer
Michael Olbrich
Franck Jullien
Christoph Fritz
Beniamino Galvani
Alexander Shiyan
Antony Pavlov