Release 4.14 arch/m68k/include/asm/serial.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * include/asm-m68k/serial.h
 *
 * currently this seems useful only for a Q40,
 * it's an almost exact copy of ../asm-alpha/serial.h
 *
 */


/*
 * This assumes you have a 1.8432 MHz clock for your UART.
 *
 * It'd be nice if someone built a serial card with a 24.576 MHz
 * clock, since the 16550A is capable of handling a top speed of 1.5
 * megabits/second; but this requires the faster clock.
 */

#define BASE_BAUD ( 1843200 / 16 )

/* Standard COM flags (except for COM4, because of the 8514 problem) */
#ifdef CONFIG_SERIAL_8250_DETECT_IRQ

#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)

#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
#else

#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)

#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
#endif

#ifdef CONFIG_ISA

#define SERIAL_PORT_DFNS			\
	/* UART CLK   PORT IRQ     FLAGS        */			\
	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\
        { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },	/* ttyS1 */	\
        { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */	\
        { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },	/* ttyS3 */
#endif
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Linus Torvalds (pre-git)
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Kars de Jong
5
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1
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Peter Hurley
4
8.00%
1
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Valentin Rothberg
1
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Russell King
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Greg Kroah-Hartman
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Directory: arch/m68k/include/asm

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