| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_X86_SERIAL_H |
| #define _ASM_X86_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 a 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_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) |
| # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | UPF_AUTO_IRQ) |
| #else |
| # define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | 0 ) |
| # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | 0 ) |
| #endif |
| |
| #define SERIAL_PORT_DFNS \ |
| /* UART CLK PORT IRQ FLAGS */ \ |
| { .uart = 0, BASE_BAUD, 0x3F8, 4, STD_COMX_FLAGS }, /* ttyS0 */ \ |
| { .uart = 0, BASE_BAUD, 0x2F8, 3, STD_COMX_FLAGS }, /* ttyS1 */ \ |
| { .uart = 0, BASE_BAUD, 0x3E8, 4, STD_COMX_FLAGS }, /* ttyS2 */ \ |
| { .uart = 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ |
| |
| #endif /* _ASM_X86_SERIAL_H */ |
