mirror of
https://github.com/torvalds/linux
synced 2024-10-07 20:05:15 +00:00
50acfb2b76
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 97 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141901.025053186@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
27 lines
596 B
C
27 lines
596 B
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2012 Regents of the University of California
|
|
* Copyright (C) 2017 SiFive
|
|
*/
|
|
|
|
#include <linux/clocksource.h>
|
|
#include <linux/delay.h>
|
|
#include <asm/sbi.h>
|
|
|
|
unsigned long riscv_timebase;
|
|
|
|
void __init time_init(void)
|
|
{
|
|
struct device_node *cpu;
|
|
u32 prop;
|
|
|
|
cpu = of_find_node_by_path("/cpus");
|
|
if (!cpu || of_property_read_u32(cpu, "timebase-frequency", &prop))
|
|
panic(KERN_WARNING "RISC-V system with no 'timebase-frequency' in DTS\n");
|
|
of_node_put(cpu);
|
|
riscv_timebase = prop;
|
|
|
|
lpj_fine = riscv_timebase / HZ;
|
|
timer_probe();
|
|
}
|