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| author |   Paul Walmsley <paul.walmsley@sifive.com> | 2019-04-12 19:01:13 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-29 16:30:59 +0200 |
| commit | 45c054d0815b1530d7c7ff8441389a0421dd05e7 (patch) | |
| tree | 96cfb254fdaefadd1d54576b7e69dfce68d524a0 /include/uapi/linux/serial_core.h | |
| parent | dt-bindings: serial: add documentation for the SiFive UART driver (diff) | |
| download | linux-dev-45c054d0815b1530d7c7ff8441389a0421dd05e7.tar.xz linux-dev-45c054d0815b1530d7c7ff8441389a0421dd05e7.zip | |
tty: serial: add driver for the SiFive UART
Add a serial driver for the SiFive UART, found on SiFive FU540 devices
(among others).
The underlying serial IP block is relatively basic, and currently does
not support serial break detection. Further information on the IP
block can be found in the documentation and Chisel sources:
https://static.dev.sifive.com/FU540-C000-v1.0.pdf
https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/uart
This driver was written in collaboration with Wesley Terpstra
<wesley@sifive.com>.
Tested on a SiFive HiFive Unleashed A00 board, using BBL and the open-
source FSBL (using a DT file based on what's targeted for mainline).
This revision incorporates changes based on comments by Julia Lawall
<julia.lawall@lip6.fr>, Emil Renner Berthing <kernel@esmil.dk>, and
Andreas Schwab <schwab@suse.de>. Thanks also to Andreas for testing
the driver with his userspace and reporting a bug with the
set_termios implementation.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Wesley Terpstra <wesley@sifive.com>
Cc: linux-serial@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Emil Renner Berthing <kernel@esmil.dk>
Cc: Andreas Schwab <schwab@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/serial_core.h')
| -rw-r--r-- | include/uapi/linux/serial_core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h index a51c747b52c5..67c4aaaa2308 100644 --- a/include/uapi/linux/serial_core.h +++ b/include/uapi/linux/serial_core.h @@ -290,4 +290,7 @@ /* Socionext Milbeaut UART */ #define PORT_MLB_USIO 119 +/* SiFive UART */ +#define PORT_SIFIVE_V0 120 + #endif /* _UAPILINUX_SERIAL_CORE_H */ |