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linux-sg2042/drivers/tty/serial
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Fabio Estevam b38cb7d257 serial: imx: Disable new features of autobaud detection 
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 cause the receiver to get out of sync
and continuously produce received characters of '\xff'.

In order to reproduce the problem:

$ stty -F /dev/ttymxc0 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 garbage characters is seen.

Also rename the bit definition as per the reference manual.

Tested on mx6q, mx6dl, mx6solo and mx53.

Based on a patch from Eric Nelson for U-boot.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2014-05-28 12:36:21 -07:00
..
8250 parport: Add support for the WCH353 1S/1P multi-IO card 2014-05-28 12:30:48 -07:00
cpm_uart tty: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00
jsm TTY: jsm, remove superfluous check 2013-03-18 16:17:20 -07:00
21285.c
…
68328serial.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2013-05-10 07:22:35 -07:00
Kconfig serial: SERIAL_FSL_LPUART should depend on HAS_DMA 2014-05-28 12:24:31 -07:00
Makefile serial: sc16is7xx 2014-04-25 10:08:48 -07:00
altera_jtaguart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
altera_uart.c ARM: SoC DT updates for 3.12 2013-09-06 13:26:27 -07:00
amba-pl010.c serial: pl010: Convert to modern PM ops 2013-12-08 17:09:07 -08:00
amba-pl011.c tty/serial: pl011: add generic earlycon support 2014-04-24 16:32:27 -07:00
apbuart.c tty: serial: apbuart: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:33 -07:00
apbuart.h
…
ar933x_uart.c tty: ar933x_uart: add device tree support and binding documentation 2013-08-30 14:11:27 -07:00
arc_uart.c serial: arc_uart: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
atmel_serial.c ARM: SoC: cleanups for 3.15 2014-04-05 13:51:19 -07:00
bcm63xx_uart.c tty: serial: bcm63xx_uart: add support for DT probing 2014-02-28 16:27:18 -08:00
bfin_sport_uart.c serial: bfin_sport_uart: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
bfin_sport_uart.h
…
bfin_uart.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
clps711x.c Revert "serial: clps711x: Give a chance to perform useful tasks during wait loop" 2014-04-16 14:17:44 -07:00
crisv10.c tty: serial: crisv10: Drop remaining code for CRISv10 CPU simulator 2014-02-15 12:16:21 -08:00
crisv10.h crisv10: use counts from tty_port 2013-03-18 16:26:33 -07:00
dz.c
…
dz.h
…
earlycon-arm-semihost.c tty/serial: add arm/arm64 semihosting earlycon 2014-04-24 16:32:27 -07:00
earlycon.c tty/serial: fix generic earlycon option parsing 2014-05-03 18:16:38 -04:00
efm32-uart.c serial: efm32: add module_exit 2014-05-28 12:30:48 -07:00
fsl_lpuart.c serial: fsl_lpuart: add DMA support 2014-02-18 12:50:26 -08:00
icom.c serial: icom: dereference after free in load_code() 2013-12-08 17:16:05 -08:00
icom.h
…
ifx6x60.c serial: ifx6x60: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
ifx6x60.h
…
imx.c serial: imx: Disable new features of autobaud detection 2014-05-28 12:36:21 -07:00
ioc3_serial.c
…
ioc4_serial.c serial: ioc4_serial: Staticize ioc4_serial_attach_one() 2013-08-12 11:35:32 -07:00
ip22zilog.c tty: Remove unnecessary semicolons 2013-10-16 13:08:16 -07:00
ip22zilog.h
…
kgdb_nmi.c tty: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00
kgdboc.c treewide: Convert retrun typos to return 2013-09-04 12:26:36 +02:00
lantiq.c serial: MIPS: lantiq: fix clock error check 2013-08-12 11:37:48 -07:00
lpc32xx_hs.c tty: serial: lpc32xx_hs: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:34 -07:00
m32r_sio.c tty: serial: m32r_sio: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:34 -07:00
m32r_sio.h
…
m32r_sio_reg.h
…
max310x.c serial: max310x: Add missing #include <linux/uaccess.h> 2014-03-17 16:13:23 -07:00
max3100.c serial: use dev_get_platdata() 2013-07-31 17:56:15 -07:00
mcf.c tty: serial: mcf: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:34 -07:00
men_z135_uart.c tty: serial: men_z135_uart: Don't activate TX Space available IRQ on startup 2014-05-28 12:27:22 -07:00
mfd.c serial: mfd: Staticize local symbols 2013-10-29 16:34:11 -07:00
mpc52xx_uart.c serial: mpc512x: setup the PSC FIFO clock as well 2014-01-12 18:53:05 +01:00
mpsc.c serial: mpsc: Remove casting the return value which is a void pointer 2013-09-26 14:29:58 -07:00
mrst_max3110.c mrst_max3110: fix unbalanced IRQ issue during resume 2013-10-29 16:26:54 -07:00
mrst_max3110.h
…
msm_serial.c msm_serial: Add support for poll_{get,put}_char() 2014-02-12 11:34:23 -08:00
msm_serial.h msm_serial: Add support for poll_{get,put}_char() 2014-02-12 11:34:23 -08:00
msm_serial_hs.c serial: use dev_get_platdata() 2013-07-31 17:56:15 -07:00
msm_smd_tty.c TTY: msm_smd_tty, clean up activate/shutdown 2013-03-18 16:19:44 -07:00
mux.c tty: serial: replace del_timer by del_timer_sync 2014-04-24 16:13:01 -07:00
mxs-auart.c tty: serial: mxs-auart: Check the return value from clk_prepare_enable() 2013-12-08 17:14:58 -08:00
netx-serial.c tty: serial: netx: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:34 -07:00
nwpserial.c tty: serial: nwpserial: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:35 -07:00
of_serial.c tty: delete non-required instances of include <linux/init.h> 2014-01-07 17:05:21 -08:00
omap-serial.c tty: serial: omap: fix Sparse warnings 2014-04-24 16:19:02 -07:00
pch_uart.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
pmac_zilog.c TTY: pmac_zilog, check existence of ports in pmz_console_init() 2013-11-25 08:54:25 -08:00
pmac_zilog.h
…
pnx8xxx_uart.c tty: serial: pnx8xxx: drop uart_port->lock before calling tty_flip_buffer_push() 2013-08-27 16:17:35 -07:00
pxa.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
rp2.c tty: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-08 17:09:07 -08:00
sa1100.c serial: sa1100: delete .set_wake callback 2013-10-16 13:16:18 -07:00
samsung.c serial: samsung: Neaten dbg uses 2014-05-28 12:27:22 -07:00
samsung.h serial: samsung: Neaten dbg uses 2014-05-28 12:27:22 -07:00
sb1250-duart.c
…
sc16is7xx.c serial: sc16is7xx: dynamically allocate tx/rx buffer 2014-05-28 12:22:42 -07:00
sccnxp.c serial: sccnxp: missing uart_unregister_driver() on error in sccnxp_probe() 2013-09-26 15:44:45 -07:00
serial-tegra.c serial: tegra: convert to standard DMA DT bindings 2013-12-11 16:44:35 -07:00
serial_core.c Merge 3.15-rc3 into tty-next 2014-04-27 21:40:39 -07:00
serial_ks8695.c
…
serial_txx9.c serial_core: Commonalize crlf when working w/ a non open console port 2014-04-24 16:13:01 -07:00
sh-sci.c Revert "serial: sh-sci: Add device tree support for r8a7779" 2014-04-24 19:26:16 -07:00
sh-sci.h serial: sh-sci: Move overrun_bit and error_mask fields out of pdata 2013-12-24 11:17:48 +09:00
sirfsoc_uart.c serial: sirf: fix spinlock deadlock issue 2014-05-28 12:22:43 -07:00
sirfsoc_uart.h serial: sirf: fix spinlock deadlock issue 2014-05-28 12:22:43 -07:00
sn_console.c
…
st-asc.c serial: st-asc: Fix data corruption during long console bursts 2014-05-28 12:24:31 -07:00
suncore.c
…
sunhv.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunsab.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunsab.h
…
sunsu.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunzilog.c sparc: serial: Clean up the locking for -rt 2014-03-06 16:32:25 -05:00
sunzilog.h
…
tilegx.c tilegx: Add tty serial support for TILE-Gx on-chip UART 2013-09-03 14:50:40 -04:00
timbuart.c serial: timbuart: Staticize local symbols 2013-08-12 11:35:31 -07:00
timbuart.h
…
uartlite.c tty: serial: uartlite: Specify time for sending chars 2014-05-28 12:24:31 -07:00
ucc_uart.c DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
vr41xx_siu.c serial: use dev_get_platdata() 2013-07-31 17:56:15 -07:00
vt8500_serial.c serial: vt8500: add missing braces 2013-10-16 13:22:16 -07:00
xilinx_uartps.c tty: xuartps: Rebrand driver as Cadence UART 2014-04-24 16:21:51 -07:00
zs.c
…
zs.h
…