1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2014-2015, Freescale Semiconductor, Inc.
* Copyright 2019 NXP Semiconductors
*
* Derived from arch/power/cpu/mpc85xx/speed.c
*/
#include <common.h>
#include <linux/compiler.h>
#include <fsl_ifc.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/arch-fsl-layerscape/immap_lsch3.h>
#include <asm/arch/clock.h>
#include <asm/arch/soc.h>
#include "cpu.h"
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_SYS_FSL_NUM_CC_PLLS
#define CONFIG_SYS_FSL_NUM_CC_PLLS 6
#endif
void get_sys_info(struct sys_info *sys_info)
{
struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
struct ccsr_clk_cluster_group __iomem *clk_grp[2] = {
(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR),
(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR)
};
struct ccsr_clk_ctrl __iomem *clk_ctrl =
(void *)(CONFIG_SYS_FSL_CH3_CLK_CTRL_ADDR);
unsigned int cpu;
const u8 core_cplx_pll[16] = {
[0] = 0, /* CC1 PPL / 1 */
[1] = 0, /* CC1 PPL / 2 */
[2] = 0, /* CC1 PPL / 4 */
[4] = 1, /* CC2 PPL / 1 */
[5] = 1, /* CC2 PPL / 2 */
[6] = 1, /* CC2 PPL / 4 */
[8] = 2, /* CC3 PPL / 1 */
[9] = 2, /* CC3 PPL / 2 */
[10] = 2, /* CC3 PPL / 4 */
[12] = 3, /* CC4 PPL / 1 */
[13] = 3, /* CC4 PPL / 2 */
[14] = 3, /* CC4 PPL / 4 */
};
const u8 core_cplx_pll_div[16] = {
[0] = 1, /* CC1 PPL / 1 */
[1] = 2, /* CC1 PPL / 2 */
[2] = 4, /* CC1 PPL / 4 */
[4] = 1, /* CC2 PPL / 1 */
[5] = 2, /* CC2 PPL / 2 */
[6] = 4, /* CC2 PPL / 4 */
[8] = 1, /* CC3 PPL / 1 */
[9] = 2, /* CC3 PPL / 2 */
[10] = 4, /* CC3 PPL / 4 */
[12] = 1, /* CC4 PPL / 1 */
[13] = 2, /* CC4 PPL / 2 */
[14] = 4, /* CC4 PPL / 4 */
};
uint i, cluster;
#if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LS1088A)
uint rcw_tmp;
#endif
uint freq_c_pll[CONFIG_SYS_FSL_NUM_CC_PLLS];
uint ratio[CONFIG_SYS_FSL_NUM_CC_PLLS];
unsigned long sysclk = CONFIG_SYS_CLK_FREQ;
int cc_group[12] = CONFIG_SYS_FSL_CLUSTER_CLOCKS;
u32 c_pll_sel, cplx_pll;
void *offset;
sys_info->freq_systembus = sysclk;
#ifdef CONFIG_DDR_CLK_FREQ
sys_info->freq_ddrbus = CONFIG_DDR_CLK_FREQ;
#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
sys_info->freq_ddrbus2 = CONFIG_DDR_CLK_FREQ;
#endif
#else
sys_info->freq_ddrbus = sysclk;
#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
sys_info->freq_ddrbus2 = sysclk;
#endif
#endif
/* The freq_systembus is used to record frequency of platform PLL */
sys_info->freq_systembus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_SHIFT) &
FSL_CHASSIS3_RCWSR0_SYS_PLL_RAT_MASK;
sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_SHIFT) &
FSL_CHASSIS3_RCWSR0_MEM_PLL_RAT_MASK;
#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
if (soc_has_dp_ddr()) {
sys_info->freq_ddrbus2 *= (gur_in32(&gur->rcwsr[0]) >>
FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_SHIFT) &
FSL_CHASSIS3_RCWSR0_MEM2_PLL_RAT_MASK;
} else {
sys_info->freq_ddrbus2 = 0;
}
#endif
for (i = 0; i < CONFIG_SYS_FSL_NUM_CC_PLLS; i++) {
/*
* fixme: prefer to combine the following into one line, but
* cannot pass compiling without warning about in_le32.
*/
offset = (void *)((size_t)clk_grp[i/3] +
offsetof(struct ccsr_clk_cluster_group,
pllngsr[i%3].gsr));
ratio[i] = (in_le32(offset) >> 1) & 0x3f;
freq_c_pll[i] = sysclk * ratio[i];
}
for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) {
cluster = fsl_qoriq_core_to_cluster(cpu);
c_pll_sel = (in_le32(&clk_ctrl->clkcncsr[cluster].csr) >> 27)
& 0xf;
cplx_pll = core_cplx_pll[c_pll_sel];
cplx_pll += cc_group[cluster] - 1;
sys_info->freq_processor[cpu] =
freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
}
#if defined(CONFIG_FSL_IFC)
sys_info->freq_localbus = sys_info->freq_systembus /
CONFIG_SYS_FSL_IFC_CLK_DIV;
#endif
#if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LS1088A)
#define HWA_CGA_M2_CLK_SEL 0x00380000
#define HWA_CGA_M2_CLK_SHIFT 19
rcw_tmp = in_le32(&gur->rcwsr[5]);
switch ((rcw_tmp & HWA_CGA_M2_CLK_SEL) >> HWA_CGA_M2_CLK_SHIFT) {
case 1:
sys_info->freq_cga_m2 = freq_c_pll[1];
break;
case 2:
sys_info->freq_cga_m2 = freq_c_pll[1] / 2;
break;
case 3:
sys_info->freq_cga_m2 = freq_c_pll[1] / 3;
break;
case 4:
sys_info->freq_cga_m2 = freq_c_pll[1] / 4;
break;
case 6:
sys_info->freq_cga_m2 = freq_c_pll[0] / 2;
break;
case 7:
sys_info->freq_cga_m2 = freq_c_pll[0] / 3;
break;
default:
printf("Error: Unknown peripheral clock select!\n");
break;
}
#endif
#if defined(CONFIG_ARCH_LX2160A) || defined(CONFIG_ARCH_LS2080A)
sys_info->freq_cga_m2 = sys_info->freq_systembus;
#endif
}
int get_clocks(void)
{
struct sys_info sys_info;
get_sys_info(&sys_info);
gd->cpu_clk = sys_info.freq_processor[0];
gd->bus_clk = sys_info.freq_systembus / CONFIG_SYS_FSL_PCLK_DIV;
gd->mem_clk = sys_info.freq_ddrbus;
#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
gd->arch.mem2_clk = sys_info.freq_ddrbus2;
#endif
#if defined(CONFIG_FSL_ESDHC)
#if defined(CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK)
#if defined(CONFIG_ARCH_LS1028A) || defined(CONFIG_ARCH_LX2160A)
gd->arch.sdhc_clk = sys_info.freq_cga_m2 / 2;
#endif
#if defined(CONFIG_ARCH_LS2080A) || defined(CONFIG_ARCH_LS1088A)
gd->arch.sdhc_clk = sys_info.freq_cga_m2;
#endif
#else
gd->arch.sdhc_clk = gd->bus_clk / CONFIG_SYS_FSL_SDHC_CLK_DIV;
#endif
#endif /* defined(CONFIG_FSL_ESDHC) */
if (gd->cpu_clk != 0)
return 0;
else
return 1;
}
/********************************************
* get_bus_freq
* return platform clock in Hz
*********************************************/
ulong get_bus_freq(ulong dummy)
{
if (!gd->bus_clk)
get_clocks();
return gd->bus_clk;
}
/********************************************
* get_ddr_freq
* return ddr bus freq in Hz
*********************************************/
ulong get_ddr_freq(ulong ctrl_num)
{
if (!gd->mem_clk)
get_clocks();
/*
* DDR controller 0 & 1 are on memory complex 0
* DDR controller 2 is on memory complext 1
*/
#ifdef CONFIG_SYS_FSL_HAS_DP_DDR
if (ctrl_num >= 2)
return gd->arch.mem2_clk;
#endif
return gd->mem_clk;
}
int get_i2c_freq(ulong dummy)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_I2C_CLK_DIV;
}
int get_dspi_freq(ulong dummy)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_DSPI_CLK_DIV;
}
#ifdef CONFIG_FSL_ESDHC
int get_sdhc_freq(ulong dummy)
{
if (!gd->arch.sdhc_clk)
get_clocks();
return gd->arch.sdhc_clk;
}
#endif
int get_serial_clock(void)
{
return get_bus_freq(0) / CONFIG_SYS_FSL_DUART_CLK_DIV;
}
unsigned int mxc_get_clock(enum mxc_clock clk)
{
switch (clk) {
case MXC_I2C_CLK:
return get_i2c_freq(0);
#if defined(CONFIG_FSL_ESDHC)
case MXC_ESDHC_CLK:
case MXC_ESDHC2_CLK:
return get_sdhc_freq(0);
#endif
case MXC_DSPI_CLK:
return get_dspi_freq(0);
default:
printf("Unsupported clock\n");
}
return 0;
}
|
