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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/*
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* include/asm-m68k/serial.h
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*
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* currently this seems useful only for a Q40,
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* it's an almost exact copy of ../asm-alpha/serial.h
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*
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*/
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/*
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* This assumes you have a 1.8432 MHz clock for your UART.
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*
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* It'd be nice if someone built a serial card with a 24.576 MHz
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* clock, since the 16550A is capable of handling a top speed of 1.5
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* megabits/second; but this requires the faster clock.
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*/
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#define BASE_BAUD ( 1843200 / 16 )
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/* Standard COM flags (except for COM4, because of the 8514 problem) */
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#ifdef CONFIG_SERIAL_DETECT_IRQ
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
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#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
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#else
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#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
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#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
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#endif
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#define SERIAL_PORT_DFNS \
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/* UART CLK PORT IRQ FLAGS */ \
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{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \
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{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \
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{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \
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{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */
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