1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * include/asm-alpha/serial.h
 4 */
 5
 6
 7/*
 8 * This assumes you have a 1.8432 MHz clock for your UART.
 9 *
10 * It'd be nice if someone built a serial card with a 24.576 MHz
11 * clock, since the 16550A is capable of handling a top speed of 1.5
12 * megabits/second; but this requires the faster clock.
13 */
14#define BASE_BAUD ( 1843200 / 16 )
15
16/* Standard COM flags (except for COM4, because of the 8514 problem) */
17#ifdef CONFIG_SERIAL_8250_DETECT_IRQ
18#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)
19#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
20#else
21#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
22#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
23#endif
24
25#define SERIAL_PORT_DFNS			\
26	/* UART CLK   PORT IRQ     FLAGS        */			\
27	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\
28	{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },	/* ttyS1 */	\
29	{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */	\
30	{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },	/* ttyS3 */