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
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Board specific initialization for Verdin AM62 SoM
*
* Copyright 2023 Toradex - https://www.toradex.com/
*
*/
#include <config.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
#include <dm/uclass.h>
#include <env.h>
#include <fdt_support.h>
#include <init.h>
#include <k3-ddrss.h>
#include <spl.h>
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
int board_init(void)
{
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((long *)CFG_SYS_SDRAM_BASE, CFG_SYS_SDRAM_SIZE);
if (gd->ram_size < SZ_512M)
puts("## WARNING: Less than 512MB RAM detected\n");
return 0;
}
/*
* Avoid relocated U-Boot clash with Linux reserved-memory on 512 MB SoM
*/
phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
{
return 0x9C000000;
}
#if defined(CONFIG_SPL_LOAD_FIT)
int board_fit_config_name_match(const char *name)
{
return 0;
}
#endif
#if IS_ENABLED(CONFIG_OF_LIBFDT) && IS_ENABLED(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
return ft_common_board_setup(blob, bd);
}
#endif
static void select_dt_from_module_version(void)
{
char variant[32];
char *env_variant = env_get("variant");
int is_wifi = 0;
if (IS_ENABLED(CONFIG_TDX_CFG_BLOCK)) {
/*
* If we have a valid config block and it says we are a module with
* Wi-Fi/Bluetooth make sure we use the -wifi device tree.
*/
is_wifi = (tdx_hw_tag.prodid == VERDIN_AM62Q_WIFI_BT_IT) ||
(tdx_hw_tag.prodid == VERDIN_AM62S_512MB_WIFI_BT_IT) ||
(tdx_hw_tag.prodid == VERDIN_AM62D_1G_WIFI_BT_IT) ||
(tdx_hw_tag.prodid == VERDIN_AM62Q_2G_WIFI_BT_IT);
}
if (is_wifi)
strlcpy(&variant[0], "wifi", sizeof(variant));
else
strlcpy(&variant[0], "nonwifi", sizeof(variant));
if (strcmp(variant, env_variant)) {
printf("Setting variant to %s\n", variant);
env_set("variant", variant);
}
}
int board_late_init(void)
{
select_dt_from_module_version();
return 0;
}
#define CTRLMMR_USB0_PHY_CTRL 0x43004008
#define CTRLMMR_USB1_PHY_CTRL 0x43004018
#define CORE_VOLTAGE 0x80000000
#define MCU_CTRL_LFXOSC_32K_BYPASS_VAL BIT(4)
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void)
{
u32 val;
/* Clear USB0_PHY_CTRL_CORE_VOLTAGE */
/* TI recommends to clear the bit independent of VDDA_CORE_USB */
val = readl(CTRLMMR_USB0_PHY_CTRL);
val &= ~(CORE_VOLTAGE);
writel(val, CTRLMMR_USB0_PHY_CTRL);
/* Clear USB1_PHY_CTRL_CORE_VOLTAGE */
val = readl(CTRLMMR_USB1_PHY_CTRL);
val &= ~(CORE_VOLTAGE);
writel(val, CTRLMMR_USB1_PHY_CTRL);
/* We use the 32k FOUT from the Epson RX8130CE RTC chip */
/* In WKUP_LFOSC0 clear the power down bit and set the bypass bit
* The bypass bit is required as we provide a CMOS clock signal and
* the power down seems to be required also in the bypass case
* despite of the datasheet stating otherwise
*/
/* Compare with the AM62 datasheet,
* Table 7-21. LFXOSC Modes of Operation
*/
val = readl(MCU_CTRL_LFXOSC_CTRL);
val &= ~MCU_CTRL_LFXOSC_32K_DISABLE_VAL;
val |= MCU_CTRL_LFXOSC_32K_BYPASS_VAL;
writel(val, MCU_CTRL_LFXOSC_CTRL);
/* Make sure to mux up to take the SoC 32k from the LFOSC input */
writel(MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL,
MCU_CTRL_DEVICE_CLKOUT_32K_CTRL);
}
#endif
|