1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2024b246eSLinus Torvalds /* 3024b246eSLinus Torvalds * include/asm-alpha/serial.h 4024b246eSLinus Torvalds */ 5024b246eSLinus Torvalds 6024b246eSLinus Torvalds 7024b246eSLinus Torvalds /* 8024b246eSLinus Torvalds * This assumes you have a 1.8432 MHz clock for your UART. 9024b246eSLinus Torvalds * 10024b246eSLinus Torvalds * It'd be nice if someone built a serial card with a 24.576 MHz 11024b246eSLinus Torvalds * clock, since the 16550A is capable of handling a top speed of 1.5 12024b246eSLinus Torvalds * megabits/second; but this requires the faster clock. 13024b246eSLinus Torvalds */ 14024b246eSLinus Torvalds #define BASE_BAUD ( 1843200 / 16 ) 15024b246eSLinus Torvalds 16024b246eSLinus Torvalds /* Standard COM flags (except for COM4, because of the 8514 problem) */ 17507224aaSValentin Rothberg #ifdef CONFIG_SERIAL_8250_DETECT_IRQ 1835373abbSPeter Hurley #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) 1935373abbSPeter Hurley #define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) 20024b246eSLinus Torvalds #else 2135373abbSPeter Hurley #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) 2235373abbSPeter Hurley #define STD_COM4_FLAGS UPF_BOOT_AUTOCONF 23024b246eSLinus Torvalds #endif 24024b246eSLinus Torvalds 25024b246eSLinus Torvalds #define SERIAL_PORT_DFNS \ 26024b246eSLinus Torvalds /* UART CLK PORT IRQ FLAGS */ \ 27024b246eSLinus Torvalds { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ 28024b246eSLinus Torvalds { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ 29024b246eSLinus Torvalds { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ 30024b246eSLinus Torvalds { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ 31