| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2003, Psyent Corporation <www.psyent.com> |
| 3 | * Scott McNutt <smcnutt@psyent.com> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <watchdog.h> |
| 10 | |
| 11 | |
| 12 | extern void dly_clks( unsigned long ticks ); |
| 13 | |
| 14 | void __udelay(unsigned long usec) |
| 15 | { |
| 16 | /* The Nios core doesn't have a timebase, so we do our |
| 17 | * best for now and call a low-level loop that counts |
| 18 | * cpu clocks. |
| 19 | */ |
| 20 | unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec; |
| 21 | dly_clks (cnt); |
| 22 | } |