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)  * Carsten Langgaard, carstenl@mips.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Setting up the clock on the MIPS boards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/mach-ar7/ar7.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) void __init plat_time_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	struct clk *cpu_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	/* Initialize ar7 clocks so the CPU clock frequency is correct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	ar7_init_clocks();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	cpu_clk = clk_get(NULL, "cpu");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	if (IS_ERR(cpu_clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		printk(KERN_ERR "unable to get cpu clock\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	mips_hpt_frequency = clk_get_rate(cpu_clk) / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }