This adds device tree support for the stm serial driver. This
driver really is a AMBA primecell, so the amba-pl011 could be
used. However, the current code tries to get the apb_pclk before
the clocks are registered, so this does not work. Use the stm
driver instead until a solution is found.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we can use dynamic number id with specific devname
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
broken since
commit ed6e965824
Author: Sascha Hauer <s.hauer@pengutronix.de>
resource: Let dev_request_mem_region return an error pointer
Introduce dev_request_mem_region_err_null
only used on platform like at91 where the resource address conflicts
with errno PTR.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Commit 3843bfd0ab
"serial: imx: Determine device name from device tree"
broke this driver for non-devicetree boards, since
of_alias_get may not be called with a NULL pointer
as first argument.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds a driver which uses the EFI stdin/stdout interfaces to
implement a barebox console. Keyboard input should be fairly complete,
but not all vt100 needed by barebox work properly. The clear-to-eol
escape is missing causing garbled output in the editor.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Makes the code a bit cleaner. This also avoids casting from a pointer
to a 32bit integer which may produce compiler warnings.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We have a private data struct, so use it for storing the
base address instead of abusing the dev->priv field.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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>
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>
The current implementation fakes a memory-mapped I/O device
at 0x3f8 and 0x2f8, then uses platform read/write functions
to do the actual reading and writing. These platform functions
only exist for the x86 platform; better to move the I/O
routines into the driver and have the driver request I/O ports
using request_ioport_region.
Signed-off-by: Michel Stam <michel@reverze.net>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
"ns16450" uses the same code as "ns16550a" but with FIFO disabled.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch updates the CLPS711X UART driver.
The update adds support for use with devicetree and
makes driver comatible with current driver from kernel.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
No reason to make SYSCON driver name unique to that processor.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Linux specifies the linux,stdout-path property in the /chosen node
in the devicetree. Unfortunately this is ignored in most cases.
For cases in which barebox uses this property for its own use we
translate this into a Linux boot arg with:
- the console name provided by the serial driver
- the the instance from the 'serial' alias
- the baudrate from the actual baudrate.
So with this it's for devicetee enabled boards no longer necessary
to manually assign a console= parameter. Should a user not want
to use the automatically assigned parameter it should do:
global.linux.bootargs.console=
in the environment.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this will be done at activation
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
None of the driver make the difference between STDOUT and STDERR.
So we just need to check if putc or getc are filled in the console_device
save 32 bytes on versatilepb
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this fix :
drivers/serial/serial_auart.c:49:22: fatal error: mach/mxs.h: No such file or directory
and
drivers/serial/serial_auart.c: In function 'auart_serial_init_port':
drivers/serial/serial_auart.c:174:2: warning: implicit declaration of function 'stmp_reset_block' [-Wimplicit-function-declaration]
only compile tested ATM
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Jean-Christophe PLAGNIOL-VILLARD
Lucas Stach
Alexander Shiyan
Philipp Zabel
Antony Pavlov
Fabio Estevam
Michel Stam
Eric Bénard