162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * include/asm-m68k/serial.h 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * currently this seems useful only for a Q40, 662306a36Sopenharmony_ci * it's an almost exact copy of ../asm-alpha/serial.h 762306a36Sopenharmony_ci * 862306a36Sopenharmony_ci */ 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_ci/* 1262306a36Sopenharmony_ci * This assumes you have a 1.8432 MHz clock for your UART. 1362306a36Sopenharmony_ci * 1462306a36Sopenharmony_ci * It'd be nice if someone built a serial card with a 24.576 MHz 1562306a36Sopenharmony_ci * clock, since the 16550A is capable of handling a top speed of 1.5 1662306a36Sopenharmony_ci * megabits/second; but this requires the faster clock. 1762306a36Sopenharmony_ci */ 1862306a36Sopenharmony_ci#define BASE_BAUD ( 1843200 / 16 ) 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci/* Standard COM flags (except for COM4, because of the 8514 problem) */ 2162306a36Sopenharmony_ci#ifdef CONFIG_SERIAL_8250_DETECT_IRQ 2262306a36Sopenharmony_ci#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) 2362306a36Sopenharmony_ci#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) 2462306a36Sopenharmony_ci#else 2562306a36Sopenharmony_ci#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) 2662306a36Sopenharmony_ci#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF 2762306a36Sopenharmony_ci#endif 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci#ifdef CONFIG_ISA 3062306a36Sopenharmony_ci#define SERIAL_PORT_DFNS \ 3162306a36Sopenharmony_ci /* UART CLK PORT IRQ FLAGS */ \ 3262306a36Sopenharmony_ci { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ 3362306a36Sopenharmony_ci { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ 3462306a36Sopenharmony_ci { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ 3562306a36Sopenharmony_ci { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ 3662306a36Sopenharmony_ci#endif 37