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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-10-28 12:46:05 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-12-13 19:59:48 -0800 |
| commit | bd94c4077a0b2ecc35562c294f80f3659ecd8499 (patch) | |
| tree | 939d81f6945ce1b0925ab4bf6f7e40c399057e17 /include/uapi/linux/serial.h | |
| parent | 004e2ed5cc6d89201140ca96693bf9c0b2945f43 (diff) | |
| download | linux-bd94c4077a0b2ecc35562c294f80f3659ecd8499.tar.bz2 | |
serial: support 16-bit register interface for console
Currently, 8-bit (MMIO) and 32-bit (MMIO32) register interfaces are
supported for the 8250 console, but the 16-bit (MMIO16) is not.
The 8250 UART device on my board is connected to a 16-bit bus and
my main motivation is to use earlycon with it.
(Refer to arch/arm/boot/dts/uniphier-support-card.dtsi)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/serial.h')
| -rw-r--r-- | include/uapi/linux/serial.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h index 25331f9faa76..5d59c3ebf459 100644 --- a/include/uapi/linux/serial.h +++ b/include/uapi/linux/serial.h @@ -69,6 +69,7 @@ struct serial_struct { #define SERIAL_IO_AU 4 #define SERIAL_IO_TSI 5 #define SERIAL_IO_MEM32BE 6 +#define SERIAL_IO_MEM16 7 #define UART_CLEAR_FIFO 0x01 #define UART_USE_FIFO 0x02 |