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30 lines
1.1 KiB
30 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _ASM_X86_SERIAL_H |
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#define _ASM_X86_SERIAL_H |
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/* |
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* This assumes you have a 1.8432 MHz clock for your UART. |
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* |
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* It'd be nice if someone built a serial card with a 24.576 MHz |
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* clock, since the 16550A is capable of handling a top speed of 1.5 |
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* megabits/second; but this requires a faster clock. |
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*/ |
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#define BASE_BAUD (1843200/16) |
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/* Standard COM flags (except for COM4, because of the 8514 problem) */ |
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#ifdef CONFIG_SERIAL_8250_DETECT_IRQ |
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# define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) |
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# define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | UPF_AUTO_IRQ) |
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#else |
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# define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | 0 ) |
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# define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | 0 ) |
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#endif |
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#define SERIAL_PORT_DFNS \ |
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/* UART CLK PORT IRQ FLAGS */ \ |
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{ .uart = 0, BASE_BAUD, 0x3F8, 4, STD_COMX_FLAGS }, /* ttyS0 */ \ |
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{ .uart = 0, BASE_BAUD, 0x2F8, 3, STD_COMX_FLAGS }, /* ttyS1 */ \ |
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{ .uart = 0, BASE_BAUD, 0x3E8, 4, STD_COMX_FLAGS }, /* ttyS2 */ \ |
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{ .uart = 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ |
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#endif /* _ASM_X86_SERIAL_H */
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