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u-boot/drivers/serial
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Stefan Agner a3db78d887 arm: vf610: lpuart: fix status register handling 
The status register 1 (S1) is not writeable, hence we should not
write it. In order to clear the RDRF flag we only need to read
the data register.

Also, when stressing U-Boot a lot with serial input, an overflow can
occur which asserts the S1_OR flag (while not asserting the S1_RDRF
flag). To clear this flag we again just need to read the data
register, hence add this flag to the abort conditions for the while
loop.

Insert a compiler barrier to make sure reading the data register
gets executed after reading the status register.

Signed-off-by: Stefan Agner <stefan@agner.ch>
2014-09-09 16:52:44 +02:00
..
altera_jtag_uart.c nios2: divide nios2-io.h into each specific drivers and remove it 2014-08-30 17:48:43 +08:00
altera_uart.c nios2: divide nios2-io.h into each specific drivers and remove it 2014-08-30 17:48:43 +08:00
arm_dcc.c serial: arm_dcc: Convert to use default_serial_puts 2013-08-19 09:44:28 -04:00
atmel_usart.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
atmel_usart.h Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
lpc32xx_hsuart.c serial: lpc32xx: send CR before LF 2013-12-13 09:14:34 -05:00
Makefile Merge branch 'u-boot-pxa/master' into 'u-boot-arm/master' 2014-02-19 07:15:01 +01:00
mcfuart.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
mxs_auart.c serial: mxs_auart: Staticize local functions 2013-11-08 15:25:13 -05:00
ns16550.c omap: clean-up dead configs 2014-08-09 11:17:04 -04:00
opencores_yanu.c serial: move nios2-yanu.h into opencores_yanu driver 2014-08-30 17:48:43 +08:00
sandbox.c sandbox: Allow Ctrl-C to work in sandbox 2014-03-17 20:05:49 -06:00
serial.c Add a flag indicating when the serial console is ready 2014-07-23 14:07:25 +01:00
serial_arc.c serial: arc: Convert to use default_serial_puts 2014-02-21 09:50:12 -05:00
serial_bfin.c blackfin: Move blackfin serial driver out of blackfin arch folder. 2013-05-13 16:30:26 +08:00
serial_imx.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_ks8695.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_lpuart.c arm: vf610: lpuart: fix status register handling 2014-09-09 16:52:44 +02:00
serial_max3100.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_mxc.c serial_mxc: disable new features of autobaud detection 2014-05-28 17:37:47 +02:00
serial_ns16550.c omap: clean-up dead configs 2014-08-09 11:17:04 -04:00
serial_pl01x.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_pl01x.h Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_pxa.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_s3c24x0.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_s5p.c serial: s5p: set automatically clears after resetting Rx FIFO 2014-02-05 16:26:09 +09:00
serial_sa1100.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
serial_sh.c serial: sh: Add support External Clock mode 2014-08-09 11:17:01 -04:00
serial_sh.h serial: sh: Add support External Clock mode 2014-08-09 11:17:01 -04:00
serial_xuartlite.c serial: uartlite: Reset RX/TX in init 2014-02-04 16:48:57 +01:00
serial_zynq.c serial: zynq: Fix typo in suffix function name 2014-05-06 13:47:42 +02:00
usbtty.c stdio: Pass device pointer to stdio methods 2014-07-23 14:07:23 +01:00
usbtty.h omap: clean-up dead configs 2014-08-09 11:17:04 -04:00