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
|
/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/io.h>
#include <soc/addressmap.h>
#include <soc/clock.h>
#include <soc/funitcfg.h>
#include <soc/nvidia/tegra/usb.h>
#include <soc/padconfig.h>
#include <string.h>
struct clk_dev_control {
uint32_t *clk_enb_set;
uint32_t *rst_dev_clr;
};
struct funit_cfg_data {
const char *name;
void *ctlr_base;
uint32_t *clk_src_reg;
const struct clk_dev_control * const dev_control;
uint32_t clk_enb_val;
};
enum {
CLK_L_SET = 0,
CLK_H_SET = 1,
CLK_U_SET = 2,
CLK_V_SET = 3,
CLK_W_SET = 4,
CLK_X_SET = 5,
CLK_Y_SET = 6,
};
#define CLK_SET_REGS(x) \
{ \
CLK_RST_REG(clk_enb_##x##_set), \
CLK_RST_REG(rst_dev_##x##_clr), \
}
static const struct clk_dev_control clk_data_arr[] = {
[CLK_L_SET] = CLK_SET_REGS(l),
[CLK_H_SET] = CLK_SET_REGS(h),
[CLK_U_SET] = CLK_SET_REGS(u),
[CLK_V_SET] = CLK_SET_REGS(v),
[CLK_W_SET] = CLK_SET_REGS(w),
[CLK_X_SET] = CLK_SET_REGS(x),
[CLK_Y_SET] = CLK_SET_REGS(y),
};
#define FUNIT_DATA(funit_, loname_, clk_set_) \
[FUNIT_INDEX(funit_)] = { \
.name = STRINGIFY(loname_), \
.ctlr_base = (void *)(uintptr_t)TEGRA_##funit_##_BASE, \
.clk_src_reg = CLK_RST_REG(clk_src_##loname_), \
.dev_control = &clk_data_arr[CLK_##clk_set_##_SET], \
.clk_enb_val = CLK_##clk_set_##_##funit_, \
}
#define FUNIT_DATA_USB(funit_, clk_set_) \
[FUNIT_INDEX(funit_)] = { \
.name = STRINGIFY(funit_), \
.ctlr_base = (void *)(uintptr_t)TEGRA_##funit_##_BASE, \
.dev_control = &clk_data_arr[CLK_##clk_set_##_SET], \
.clk_enb_val = CLK_##clk_set_##_##funit_, \
}
static const struct funit_cfg_data funit_data[] = {
FUNIT_DATA(I2C1, i2c1, L),
FUNIT_DATA(I2C2, i2c2, H),
FUNIT_DATA(I2C3, i2c3, U),
FUNIT_DATA(I2C5, i2c5, H),
FUNIT_DATA(I2C6, i2c6, X),
FUNIT_DATA(SDMMC1, sdmmc1, L),
FUNIT_DATA(SDMMC4, sdmmc4, L),
FUNIT_DATA_USB(USBD, L),
FUNIT_DATA_USB(USB2, H),
FUNIT_DATA(QSPI, qspi, Y),
FUNIT_DATA(I2S1, i2s1, L),
};
_Static_assert(ARRAY_SIZE(funit_data) == FUNIT_INDEX_MAX,
"funit_cfg_data array not filled out!");
static inline uint32_t get_clk_src_freq(uint32_t clk_src_freq_id)
{
uint32_t freq = 0;
switch (clk_src_freq_id) {
case CLK_M:
freq = TEGRA_CLK_M_KHZ;
break;
case PLLP:
freq = TEGRA_PLLP_KHZ;
break;
default:
printk(BIOS_SPEW, "%s ERROR: Unknown clk_src %d\n",
__func__, clk_src_freq_id);
}
return freq;
}
static void configure_clock(const struct funit_cfg * const entry,
const struct funit_cfg_data * const funit)
{
const char *funit_i2c = "i2c";
uint32_t clk_div;
uint32_t clk_div_mask;
uint32_t clk_src_freq;
clk_src_freq = get_clk_src_freq(entry->clk_src_freq_id);
if (strncmp(funit->name, funit_i2c, strlen(funit_i2c)) == 0) {
/* I2C funit */
clk_div = get_i2c_clk_div(clk_src_freq,
entry->clk_dev_freq_khz);
clk_div_mask = CLK_DIV_MASK_I2C;
} else {
/* Non I2C */
clk_div = get_clk_div(clk_src_freq, entry->clk_dev_freq_khz);
clk_div_mask = CLK_DIV_MASK;
}
_clock_set_div(funit->clk_src_reg, funit->name, clk_div,
clk_div_mask, entry->clk_src_id);
}
static inline int is_usb(uint32_t idx)
{
return (idx == FUNIT_USBD || idx == FUNIT_USB2);
}
void soc_configure_funits(const struct funit_cfg * const entries, size_t num)
{
size_t i;
for (i = 0; i < num; i++) {
const struct funit_cfg * const entry = &entries[i];
const struct funit_cfg_data *funit;
const struct clk_dev_control *dev_control;
int funit_usb = is_usb(entry->funit_index);
if (entry->funit_index >= FUNIT_INDEX_MAX) {
printk(BIOS_ERR, "Error: Index out of bounds\n");
continue;
}
funit = &funit_data[entry->funit_index];
dev_control = funit->dev_control;
/* USB controllers have a fixed clock source. */
if (!funit_usb)
configure_clock(entry, funit);
clock_grp_enable_clear_reset(funit->clk_enb_val,
dev_control->clk_enb_set,
dev_control->rst_dev_clr);
if (funit_usb)
usb_setup_utmip(funit->ctlr_base);
soc_configure_pads(entry->pad_cfg,entry->pad_cfg_size);
}
}
void __attribute__((weak)) usb_setup_utmip(void *usb_base)
{
/* default empty implementation required if usb.c is not included */
printk(BIOS_ERR, "USB setup is not supported in current stage\n");
}
|
