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path: root/drivers/serial/ns16550.c
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2011-10-27ARM:AM33XX: Add support for TI AM335X EVMChandan Nath
This patch adds basic support for booting the board. This patch adds support for the UART necessary to get to the u-boot prompt. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2011-10-23NS16550: trivial code clean for checkpatchSimon Glass
This removes most checkpatch warnings from the ns16550 driver and its header. Signed-off-by: Simon Glass <sjg@chromium.org>
2011-10-01ns16550: change to allow 32 bit access to registersDave Aldridge
If CONFIG_SYS_NS16550_MEM32 is defined then 32 bit memory mapped access will be used to read/write the uart registers. This is especially useful for SoC devices that implement 16550 compatible uarts but that have peripheral access width constraints. Signed-off-by: Dave Aldridge <fovsoft@gmail.com>
2010-12-16Serial: ns16550: Add support for CONFIG_SYS_NS16550_IER macroPrafulla Wadaskar
On some processors this ier register configuration is different for ex. Marvell Armada100 This patch introduce CONFIG_SYS_NS16550_IER macro support to unconditionally initialize this register. Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
2010-10-13ns16550: Add WATCHDOG_RESET to putc for short watchdog timeout boardsStefan Roese
Call watchdog_reset() upon newline. This is done here in putc since the environment code uses a single puts() to print the complete envrironment upon "printenv". So we can't put this watchdog call in puts(). This is needed for boards with a very short watchdog timeout, like the lwmon5 with a 100ms timeout. Without this patch this board resets in the commands with long outputs, like "printenv" or "fdt print". Note that the image size is not increased with this patch when CONFIG_HW_WATCHDOG or CONFIG_WATCHDOG are not defined since the compiler optimizes this additional code away. Signed-off-by: Stefan Roese <sr@denx.de> Fix typo in comment. Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-05-06SERIAL: Enable port-mapped accessGraeme Russ
The x86 architecture exclusively uses Port-Mapped I/O (inb/outb) to access the 16550 UARTs. This patch mimics how Linux selects between Memory-Mapped and Port-Mapped I/O. This allows x86 boards to use CONFIG_SERIAL_MUTLI and drop the custom serial port driver Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-04-21Move arch/ppc to arch/powerpcStefan Roese
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
2010-02-03ns16550: kick watchdog while waiting for a characterLadislav Michl
ns16550 busyloops waiting for incoming byte causing watchdog to reboot while waiting for a key press. A call to WATCHDOG_RESET in NS16550_getc loop fixes it. Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
2009-06-12ZOOM2 Add serial support.Tom Rix
Zoom2 serial is in general supplied by one of the 4 UARTS on the debug board. The default serial is from the USB connector on left side of the debug board. The USB connector will produce 2 of the 4 UARTS. On your host pick the first enumeration. The details of the setting of the serial gpmc setup are not available. The values were provided by another party. The serial port set up is the same with Zoom1. Baud rate 115200, 8 bit data, no parity, 1 stop bit, no flow. The kernel bootargs are console=ttyS3,115200n8 Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
2009-04-03Rename common ns16550 constants with UART_ prefix to prevent conflictsDetlev Zundel
Fix problems introduced in commit 7b5611cdd12ca0cc33f994f0d4a4454788fc3124 [inka4x0: Add hardware diagnosis functions for inka4x0] which redefined MSR_RI which is already used on PowerPC systems. Also eliminate redundant definitions in ps2mult.h. More cleanup will be needed for other redundant occurrences though. Signed-off-by: Detlev Zundel <dzu@denx.de>
2009-02-21drivers/serial/ns16550: move ifdef into Makefile COBJS-$(...)Mike Frysinger
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-19Create configuration option for restricted ns16550 functionsRon Madrid
This patch will create a configuration option for a minimum configuration for the ns16550 serial driver at drivers/serial/ns16550.c and will apply this new configuration option to the SIMPC8313.h config file in order to fix the NAND bootstrap build error. This option will exclude all functions with exception of NS16550_putc and NS16550_init. This will be used primarily to save space and remove unused code from builds in which space is limited. Signed-off-by: Ron Madrid <ron_madrid@sbcglobal.net>
2008-10-18rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-02-05OMAP5912: fix FIFO handling in UART driverWolfgang Denk
According to the OMAP5912 Serial Interfaces Reference Guide (see http://focus.ti.com/lit/ug/spru760c/spru760c.pdf, page 150), the FIFO_EN enable bit in the FIFO Control Register (FCR) can only be changed when the baud clock is not running, i. e. when both DLL and DLH are set to 0. Thus make sure that DLL and DLH are 0 when writing the FCR. Signed-off-by: Wolfgang Denk <wd@denx.de>
2007-11-25drivers/serial : move serial drivers to drivers/serialJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>