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
|
/*
* Board init file for Dragonboard 410C
*
* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <usb.h>
#include <asm/gpio.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
gd->ram_size = PHYS_SDRAM_1_SIZE;
return 0;
}
void dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
}
int board_prepare_usb(enum usb_init_type type)
{
static struct udevice *pmic_gpio;
static struct gpio_desc hub_reset, usb_sel;
int ret = 0, node;
if (!pmic_gpio) {
ret = uclass_get_device_by_name(UCLASS_GPIO,
"pm8916_gpios@c000",
&pmic_gpio);
if (ret < 0) {
printf("Failed to find pm8916_gpios@c000 node.\n");
return ret;
}
}
/* Try to request gpios needed to start usb host on dragonboard */
if (!dm_gpio_is_valid(&hub_reset)) {
node = fdt_subnode_offset(gd->fdt_blob,
dev_of_offset(pmic_gpio),
"usb_hub_reset_pm");
if (node < 0) {
printf("Failed to find usb_hub_reset_pm dt node.\n");
return node;
}
ret = gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0,
&hub_reset, 0);
if (ret < 0) {
printf("Failed to request usb_hub_reset_pm gpio.\n");
return ret;
}
}
if (!dm_gpio_is_valid(&usb_sel)) {
node = fdt_subnode_offset(gd->fdt_blob,
dev_of_offset(pmic_gpio),
"usb_sw_sel_pm");
if (node < 0) {
printf("Failed to find usb_sw_sel_pm dt node.\n");
return 0;
}
ret = gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0,
&usb_sel, 0);
if (ret < 0) {
printf("Failed to request usb_sw_sel_pm gpio.\n");
return ret;
}
}
if (type == USB_INIT_HOST) {
/* Start USB Hub */
dm_gpio_set_dir_flags(&hub_reset,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
mdelay(100);
/* Switch usb to host connectors */
dm_gpio_set_dir_flags(&usb_sel,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
mdelay(100);
} else { /* Device */
/* Disable hub */
dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
/* Switch back to device connector */
dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
}
return 0;
}
int board_init(void)
{
return 0;
}
/* Check for vol- button - if pressed - stop autoboot */
int misc_init_r(void)
{
struct udevice *pon;
struct gpio_desc resin;
int node, ret;
ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
if (ret < 0) {
printf("Failed to find PMIC pon node. Check device tree\n");
return 0;
}
node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
"key_vol_down");
if (node < 0) {
printf("Failed to find key_vol_down node. Check device tree\n");
return 0;
}
if (gpio_request_by_name_nodev(gd->fdt_blob, node, "gpios", 0, &resin,
0)) {
printf("Failed to request key_vol_down button.\n");
return 0;
}
if (dm_gpio_get_value(&resin)) {
setenv("bootdelay", "-1");
printf("Power button pressed - dropping to console.\n");
}
return 0;
}
|
