1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (C) 2013 Soren Brinkmann <soren.brinkmann@xilinx.com>
3*4882a593Smuzhiyun * Copyright (C) 2013 Xilinx, Inc. All rights reserved.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <clk.h>
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <asm/arch/clk.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun static const char * const clk_names[clk_max] = {
15*4882a593Smuzhiyun "armpll", "ddrpll", "iopll",
16*4882a593Smuzhiyun "cpu_6or4x", "cpu_3or2x", "cpu_2x", "cpu_1x",
17*4882a593Smuzhiyun "ddr2x", "ddr3x", "dci",
18*4882a593Smuzhiyun "lqspi", "smc", "pcap", "gem0", "gem1",
19*4882a593Smuzhiyun "fclk0", "fclk1", "fclk2", "fclk3", "can0", "can1",
20*4882a593Smuzhiyun "sdio0", "sdio1", "uart0", "uart1", "spi0", "spi1", "dma",
21*4882a593Smuzhiyun "usb0_aper", "usb1_aper", "gem0_aper", "gem1_aper",
22*4882a593Smuzhiyun "sdio0_aper", "sdio1_aper", "spi0_aper", "spi1_aper",
23*4882a593Smuzhiyun "can0_aper", "can1_aper", "i2c0_aper", "i2c1_aper",
24*4882a593Smuzhiyun "uart0_aper", "uart1_aper", "gpio_aper", "lqspi_aper",
25*4882a593Smuzhiyun "smc_aper", "swdt", "dbg_trc", "dbg_apb"
26*4882a593Smuzhiyun };
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun /**
29*4882a593Smuzhiyun * set_cpu_clk_info() - Setup clock information
30*4882a593Smuzhiyun *
31*4882a593Smuzhiyun * This function is called from common code after relocation and sets up the
32*4882a593Smuzhiyun * clock information.
33*4882a593Smuzhiyun */
set_cpu_clk_info(void)34*4882a593Smuzhiyun int set_cpu_clk_info(void)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun struct clk clk;
37*4882a593Smuzhiyun struct udevice *dev;
38*4882a593Smuzhiyun ulong rate;
39*4882a593Smuzhiyun int i, ret;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun ret = uclass_get_device_by_driver(UCLASS_CLK,
42*4882a593Smuzhiyun DM_GET_DRIVER(zynq_clk), &dev);
43*4882a593Smuzhiyun if (ret)
44*4882a593Smuzhiyun return ret;
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun for (i = 0; i < 2; i++) {
47*4882a593Smuzhiyun clk.id = i ? ddr3x_clk : cpu_6or4x_clk;
48*4882a593Smuzhiyun ret = clk_request(dev, &clk);
49*4882a593Smuzhiyun if (ret < 0)
50*4882a593Smuzhiyun return ret;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun rate = clk_get_rate(&clk) / 1000000;
53*4882a593Smuzhiyun if (i)
54*4882a593Smuzhiyun gd->bd->bi_ddr_freq = rate;
55*4882a593Smuzhiyun else
56*4882a593Smuzhiyun gd->bd->bi_arm_freq = rate;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun clk_free(&clk);
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun gd->bd->bi_dsp_freq = 0;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun return 0;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun /**
66*4882a593Smuzhiyun * soc_clk_dump() - Print clock frequencies
67*4882a593Smuzhiyun * Returns zero on success
68*4882a593Smuzhiyun *
69*4882a593Smuzhiyun * Implementation for the clk dump command.
70*4882a593Smuzhiyun */
soc_clk_dump(void)71*4882a593Smuzhiyun int soc_clk_dump(void)
72*4882a593Smuzhiyun {
73*4882a593Smuzhiyun struct udevice *dev;
74*4882a593Smuzhiyun int i, ret;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun ret = uclass_get_device_by_driver(UCLASS_CLK,
77*4882a593Smuzhiyun DM_GET_DRIVER(zynq_clk), &dev);
78*4882a593Smuzhiyun if (ret)
79*4882a593Smuzhiyun return ret;
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun printf("clk\t\tfrequency\n");
82*4882a593Smuzhiyun for (i = 0; i < clk_max; i++) {
83*4882a593Smuzhiyun const char *name = clk_names[i];
84*4882a593Smuzhiyun if (name) {
85*4882a593Smuzhiyun struct clk clk;
86*4882a593Smuzhiyun unsigned long rate;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun clk.id = i;
89*4882a593Smuzhiyun ret = clk_request(dev, &clk);
90*4882a593Smuzhiyun if (ret < 0)
91*4882a593Smuzhiyun return ret;
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun rate = clk_get_rate(&clk);
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun clk_free(&clk);
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun if (rate == (unsigned long)-ENOSYS)
98*4882a593Smuzhiyun printf("%10s%20s\n", name, "unknown");
99*4882a593Smuzhiyun else
100*4882a593Smuzhiyun printf("%10s%20lu\n", name, rate);
101*4882a593Smuzhiyun }
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun return 0;
105*4882a593Smuzhiyun }
106