xref: /openbmc/u-boot/arch/arm/mach-zynqmp/clk.c (revision 8f6d5bbb)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2014 - 2015 Xilinx, Inc.
4  * Michal Simek <michal.simek@xilinx.com>
5  */
6 
7 #include <common.h>
8 #include <asm/arch/clk.h>
9 #include <asm/arch/hardware.h>
10 #include <asm/arch/sys_proto.h>
11 
12 DECLARE_GLOBAL_DATA_PTR;
13 
14 unsigned long zynqmp_get_system_timer_freq(void)
15 {
16 	u32 ver = zynqmp_get_silicon_version();
17 
18 	switch (ver) {
19 	case ZYNQMP_CSU_VERSION_QEMU:
20 		return 50000000;
21 	}
22 
23 	return 100000000;
24 }
25 
26 #ifdef CONFIG_CLOCKS
27 /**
28  * set_cpu_clk_info() - Initialize clock framework
29  * Always returns zero.
30  *
31  * This function is called from common code after relocation and sets up the
32  * clock framework. The framework must not be used before this function had been
33  * called.
34  */
35 int set_cpu_clk_info(void)
36 {
37 	gd->cpu_clk = get_tbclk();
38 
39 	gd->bd->bi_arm_freq = gd->cpu_clk / 1000000;
40 
41 	gd->bd->bi_dsp_freq = 0;
42 
43 	return 0;
44 }
45 #endif
46