1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * include/asm-m68k/serial.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * currently this seems useful only for a Q40, 6*4882a593Smuzhiyun * it's an almost exact copy of ../asm-alpha/serial.h 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * This assumes you have a 1.8432 MHz clock for your UART. 13*4882a593Smuzhiyun * 14*4882a593Smuzhiyun * It'd be nice if someone built a serial card with a 24.576 MHz 15*4882a593Smuzhiyun * clock, since the 16550A is capable of handling a top speed of 1.5 16*4882a593Smuzhiyun * megabits/second; but this requires the faster clock. 17*4882a593Smuzhiyun */ 18*4882a593Smuzhiyun #define BASE_BAUD ( 1843200 / 16 ) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* Standard COM flags (except for COM4, because of the 8514 problem) */ 21*4882a593Smuzhiyun #ifdef CONFIG_SERIAL_8250_DETECT_IRQ 22*4882a593Smuzhiyun #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) 23*4882a593Smuzhiyun #define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) 24*4882a593Smuzhiyun #else 25*4882a593Smuzhiyun #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) 26*4882a593Smuzhiyun #define STD_COM4_FLAGS UPF_BOOT_AUTOCONF 27*4882a593Smuzhiyun #endif 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #ifdef CONFIG_ISA 30*4882a593Smuzhiyun #define SERIAL_PORT_DFNS \ 31*4882a593Smuzhiyun /* UART CLK PORT IRQ FLAGS */ \ 32*4882a593Smuzhiyun { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ 33*4882a593Smuzhiyun { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ 34*4882a593Smuzhiyun { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ 35*4882a593Smuzhiyun { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ 36*4882a593Smuzhiyun #endif 37