| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _ASM_X86_SERIAL_H |
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| 3 | #define _ASM_X86_SERIAL_H |
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| 4 | |
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| 5 | /* |
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| 6 | * This assumes you have a 1.8432 MHz clock for your UART. |
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| 7 | * |
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| 8 | * It'd be nice if someone built a serial card with a 24.576 MHz |
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| 9 | * clock, since the 16550A is capable of handling a top speed of 1.5 |
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| 10 | * megabits/second; but this requires a faster clock. |
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| 11 | */ |
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| 12 | #define BASE_BAUD (1843200/16) |
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| 13 | |
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| 14 | /* Standard COM flags (except for COM4, because of the 8514 problem) */ |
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| 15 | #ifdef CONFIG_SERIAL_8250_DETECT_IRQ |
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| 16 | # define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) |
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| 17 | # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | UPF_AUTO_IRQ) |
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| 18 | #else |
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| 19 | # define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | 0 ) |
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| 20 | # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | 0 ) |
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| 21 | #endif |
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| 22 | |
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| 23 | #define SERIAL_PORT_DFNS \ |
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| 24 | /* UART CLK PORT IRQ FLAGS */ \ |
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| 25 | { .uart = 0, BASE_BAUD, 0x3F8, 4, STD_COMX_FLAGS }, /* ttyS0 */ \ |
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| 26 | { .uart = 0, BASE_BAUD, 0x2F8, 3, STD_COMX_FLAGS }, /* ttyS1 */ \ |
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| 27 | { .uart = 0, BASE_BAUD, 0x3E8, 4, STD_COMX_FLAGS }, /* ttyS2 */ \ |
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| 28 | { .uart = 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ |
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| 29 | |
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| 30 | #endif /* _ASM_X86_SERIAL_H */ |
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| 31 | |
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