| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * include/asm-alpha/serial.h |
| 3 | */ |
| 4 | |
| 5 | |
| 6 | /* |
| 7 | * This assumes you have a 1.8432 MHz clock for your UART. |
| 8 | * |
| 9 | * It'd be nice if someone built a serial card with a 24.576 MHz |
| 10 | * clock, since the 16550A is capable of handling a top speed of 1.5 |
| 11 | * megabits/second; but this requires the faster clock. |
| 12 | */ |
| 13 | #define BASE_BAUD ( 1843200 / 16 ) |
| 14 | |
| 15 | /* Standard COM flags (except for COM4, because of the 8514 problem) */ |
| 16 | #ifdef CONFIG_SERIAL_8250_DETECT_IRQ |
| 17 | #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ) |
| 18 | #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ) |
| 19 | #else |
| 20 | #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST) |
| 21 | #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF |
| 22 | #endif |
| 23 | |
| 24 | #define SERIAL_PORT_DFNS \ |
| 25 | /* UART CLK PORT IRQ FLAGS */ \ |
| 26 | { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ |
| 27 | { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ |
| 28 | { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ |
| 29 | { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ |