Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2012 Regents of the University of California
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2017 SiFive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/of_clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/clocksource.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/sbi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) unsigned long riscv_timebase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) EXPORT_SYMBOL_GPL(riscv_timebase);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) void __init time_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct device_node *cpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	u32 prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	cpu = of_find_node_by_path("/cpus");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	if (!cpu || of_property_read_u32(cpu, "timebase-frequency", &prop))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		panic(KERN_WARNING "RISC-V system with no 'timebase-frequency' in DTS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	of_node_put(cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	riscv_timebase = prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	lpj_fine = riscv_timebase / HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	of_clk_init(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	timer_probe();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) void clocksource_arch_init(struct clocksource *cs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #ifdef CONFIG_GENERIC_GETTIMEOFDAY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	cs->vdso_clock_mode = VDSO_CLOCKMODE_ARCHTIMER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	cs->vdso_clock_mode = VDSO_CLOCKMODE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) }