1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2019 Intel Corporation <www.intel.com>
4 *
5 */
6
7 #include <clk.h>
8 #include <common.h>
9 #include <dm.h>
10 #include <log.h>
11 #include <malloc.h>
12 #include <asm/arch/clock_manager.h>
13 #include <asm/arch/system_manager.h>
14 #include <asm/global_data.h>
15 #include <asm/io.h>
16 #include <dt-bindings/clock/agilex-clock.h>
17
18 DECLARE_GLOBAL_DATA_PTR;
19
cm_get_rate_dm(u32 id)20 static ulong cm_get_rate_dm(u32 id)
21 {
22 struct udevice *dev;
23 struct clk clk;
24 ulong rate;
25 int ret;
26
27 ret = uclass_get_device_by_driver(UCLASS_CLK,
28 DM_DRIVER_GET(socfpga_agilex_clk),
29 &dev);
30 if (ret)
31 return 0;
32
33 clk.id = id;
34 ret = clk_request(dev, &clk);
35 if (ret < 0)
36 return 0;
37
38 rate = clk_get_rate(&clk);
39
40 clk_free(&clk);
41
42 if ((rate == (unsigned long)-ENOSYS) ||
43 (rate == (unsigned long)-ENXIO) ||
44 (rate == (unsigned long)-EIO)) {
45 debug("%s id %u: clk_get_rate err: %ld\n",
46 __func__, id, rate);
47 return 0;
48 }
49
50 return rate;
51 }
52
cm_get_rate_dm_khz(u32 id)53 static u32 cm_get_rate_dm_khz(u32 id)
54 {
55 return cm_get_rate_dm(id) / 1000;
56 }
57
cm_get_mpu_clk_hz(void)58 unsigned long cm_get_mpu_clk_hz(void)
59 {
60 return cm_get_rate_dm(AGILEX_MPU_CLK);
61 }
62
cm_get_l4_sys_free_clk_hz(void)63 unsigned int cm_get_l4_sys_free_clk_hz(void)
64 {
65 return cm_get_rate_dm(AGILEX_L4_SYS_FREE_CLK);
66 }
67
cm_get_qspi_controller_clk_hz(void)68 u32 cm_get_qspi_controller_clk_hz(void)
69 {
70 return readl(socfpga_get_sysmgr_addr() +
71 SYSMGR_SOC64_BOOT_SCRATCH_COLD0);
72 }
73
cm_print_clock_quick_summary(void)74 void cm_print_clock_quick_summary(void)
75 {
76 printf("MPU %10d kHz\n",
77 cm_get_rate_dm_khz(AGILEX_MPU_CLK));
78 printf("L4 Main %8d kHz\n",
79 cm_get_rate_dm_khz(AGILEX_L4_MAIN_CLK));
80 printf("L4 sys free %8d kHz\n",
81 cm_get_rate_dm_khz(AGILEX_L4_SYS_FREE_CLK));
82 printf("L4 MP %8d kHz\n",
83 cm_get_rate_dm_khz(AGILEX_L4_MP_CLK));
84 printf("L4 SP %8d kHz\n",
85 cm_get_rate_dm_khz(AGILEX_L4_SP_CLK));
86 printf("SDMMC %8d kHz\n",
87 cm_get_rate_dm_khz(AGILEX_SDMMC_CLK));
88 }
89