summaryrefslogtreecommitdiffstats
path: root/drivers/serial/Kconfig
diff options
context:
space:
mode:
authorMaciej W. Rozycki <macro@linux-mips.org>2007-07-17 04:03:50 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-17 10:23:03 -0700
commitb45d52797432bd6b5d9786dbda940eb8d0b9ed06 (patch)
tree1bc6d7961c37c5cab006976b90ab084a11f33457 /drivers/serial/Kconfig
parentf9e86f419073605b4520848021cc042963c227c7 (diff)
downloadblackbird-op-linux-b45d52797432bd6b5d9786dbda940eb8d0b9ed06.tar.gz
blackbird-op-linux-b45d52797432bd6b5d9786dbda940eb8d0b9ed06.zip
sb1250-duart.c: SB1250 DUART serial support
This is a driver for the SB1250 DUART, a dual serial port implementation included in the Broadcom family of SOCs descending from the SiByte SB1250 MIPS64 chip multiprocessor. It is a new implementation replacing the old-fashioned driver currently present in the linux-mips.org tree. It supports all the usual features one would expect from a(n asynchronous) serial driver, including modem line control (as far as hardware supports it -- there is edge detection logic missing from the DCD and RI lines and the driver does not implement polling of these lines at the moment), the serial console, BREAK transmission and reception, including the magic SysRq. The receive FIFO threshold is not maintained though. The driver was tested with a SWARM board which uses a BCM1250 SOC (which is dual MIPS64 CMP) and has both ports of the single DUART implemented wired externally. Both were tested. Testing included using the ports as terminal lines at 1200bps (which is the ports minimum), 115200bps and a couple of random speeds inbetween. The modem lines were verified to operate correctly. No testing was performed with a use as a network interface, like with SLIP or PPP. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Acked-by: Ralf Baechle <ralf@linux-mips.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/serial/Kconfig')
-rw-r--r--drivers/serial/Kconfig28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index cab42cbd920d..7fa413ddccf5 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -338,6 +338,34 @@ config SERIAL_AMBA_PL011_CONSOLE
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
+config SERIAL_SB1250_DUART
+ tristate "BCM1xxx on-chip DUART serial support"
+ depends on SIBYTE_SB1xxx_SOC=y
+ select SERIAL_CORE
+ default y
+ ---help---
+ Support for the asynchronous serial interface (DUART) included in
+ the BCM1250 and derived System-On-a-Chip (SOC) devices. Note that
+ the letter D in DUART stands for "dual", which is how the device
+ is implemented. Depending on the SOC configuration there may be
+ one or more DUARTs available of which all are handled.
+
+ If unsure, say Y. To compile this driver as a module, choose M here:
+ the module will be called sb1250-duart.
+
+config SERIAL_SB1250_DUART_CONSOLE
+ bool "Support for console on a BCM1xxx DUART serial port"
+ depends on SERIAL_SB1250_DUART=y
+ select SERIAL_CORE_CONSOLE
+ default y
+ ---help---
+ If you say Y here, it will be possible to use a serial port as the
+ system console (the system console is the device which receives all
+ kernel messages and warnings and which allows logins in single user
+ mode).
+
+ If unsure, say Y.
+
config SERIAL_ATMEL
bool "AT91 / AT32 on-chip serial port support"
depends on (ARM && ARCH_AT91) || AVR32
OpenPOWER on IntegriCloud