1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Board init file for Dragonboard 410C
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <common.h>
10*4882a593Smuzhiyun #include <dm.h>
11*4882a593Smuzhiyun #include <usb.h>
12*4882a593Smuzhiyun #include <asm/gpio.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
15*4882a593Smuzhiyun
dram_init(void)16*4882a593Smuzhiyun int dram_init(void)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun gd->ram_size = PHYS_SDRAM_1_SIZE;
19*4882a593Smuzhiyun return 0;
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
dram_init_banksize(void)22*4882a593Smuzhiyun int dram_init_banksize(void)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
25*4882a593Smuzhiyun gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun return 0;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun
board_prepare_usb(enum usb_init_type type)31*4882a593Smuzhiyun int board_prepare_usb(enum usb_init_type type)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun static struct udevice *pmic_gpio;
34*4882a593Smuzhiyun static struct gpio_desc hub_reset, usb_sel;
35*4882a593Smuzhiyun int ret = 0, node;
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun if (!pmic_gpio) {
38*4882a593Smuzhiyun ret = uclass_get_device_by_name(UCLASS_GPIO,
39*4882a593Smuzhiyun "pm8916_gpios@c000",
40*4882a593Smuzhiyun &pmic_gpio);
41*4882a593Smuzhiyun if (ret < 0) {
42*4882a593Smuzhiyun printf("Failed to find pm8916_gpios@c000 node.\n");
43*4882a593Smuzhiyun return ret;
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* Try to request gpios needed to start usb host on dragonboard */
48*4882a593Smuzhiyun if (!dm_gpio_is_valid(&hub_reset)) {
49*4882a593Smuzhiyun node = fdt_subnode_offset(gd->fdt_blob,
50*4882a593Smuzhiyun dev_of_offset(pmic_gpio),
51*4882a593Smuzhiyun "usb_hub_reset_pm");
52*4882a593Smuzhiyun if (node < 0) {
53*4882a593Smuzhiyun printf("Failed to find usb_hub_reset_pm dt node.\n");
54*4882a593Smuzhiyun return node;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
57*4882a593Smuzhiyun "gpios", 0, &hub_reset, 0);
58*4882a593Smuzhiyun if (ret < 0) {
59*4882a593Smuzhiyun printf("Failed to request usb_hub_reset_pm gpio.\n");
60*4882a593Smuzhiyun return ret;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun if (!dm_gpio_is_valid(&usb_sel)) {
65*4882a593Smuzhiyun node = fdt_subnode_offset(gd->fdt_blob,
66*4882a593Smuzhiyun dev_of_offset(pmic_gpio),
67*4882a593Smuzhiyun "usb_sw_sel_pm");
68*4882a593Smuzhiyun if (node < 0) {
69*4882a593Smuzhiyun printf("Failed to find usb_sw_sel_pm dt node.\n");
70*4882a593Smuzhiyun return 0;
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
73*4882a593Smuzhiyun "gpios", 0, &usb_sel, 0);
74*4882a593Smuzhiyun if (ret < 0) {
75*4882a593Smuzhiyun printf("Failed to request usb_sw_sel_pm gpio.\n");
76*4882a593Smuzhiyun return ret;
77*4882a593Smuzhiyun }
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun if (type == USB_INIT_HOST) {
81*4882a593Smuzhiyun /* Start USB Hub */
82*4882a593Smuzhiyun dm_gpio_set_dir_flags(&hub_reset,
83*4882a593Smuzhiyun GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
84*4882a593Smuzhiyun mdelay(100);
85*4882a593Smuzhiyun /* Switch usb to host connectors */
86*4882a593Smuzhiyun dm_gpio_set_dir_flags(&usb_sel,
87*4882a593Smuzhiyun GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
88*4882a593Smuzhiyun mdelay(100);
89*4882a593Smuzhiyun } else { /* Device */
90*4882a593Smuzhiyun /* Disable hub */
91*4882a593Smuzhiyun dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
92*4882a593Smuzhiyun /* Switch back to device connector */
93*4882a593Smuzhiyun dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
94*4882a593Smuzhiyun }
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun return 0;
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
board_init(void)99*4882a593Smuzhiyun int board_init(void)
100*4882a593Smuzhiyun {
101*4882a593Smuzhiyun return 0;
102*4882a593Smuzhiyun }
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun /* Check for vol- button - if pressed - stop autoboot */
misc_init_r(void)105*4882a593Smuzhiyun int misc_init_r(void)
106*4882a593Smuzhiyun {
107*4882a593Smuzhiyun struct udevice *pon;
108*4882a593Smuzhiyun struct gpio_desc resin;
109*4882a593Smuzhiyun int node, ret;
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
112*4882a593Smuzhiyun if (ret < 0) {
113*4882a593Smuzhiyun printf("Failed to find PMIC pon node. Check device tree\n");
114*4882a593Smuzhiyun return 0;
115*4882a593Smuzhiyun }
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
118*4882a593Smuzhiyun "key_vol_down");
119*4882a593Smuzhiyun if (node < 0) {
120*4882a593Smuzhiyun printf("Failed to find key_vol_down node. Check device tree\n");
121*4882a593Smuzhiyun return 0;
122*4882a593Smuzhiyun }
123*4882a593Smuzhiyun
124*4882a593Smuzhiyun if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
125*4882a593Smuzhiyun &resin, 0)) {
126*4882a593Smuzhiyun printf("Failed to request key_vol_down button.\n");
127*4882a593Smuzhiyun return 0;
128*4882a593Smuzhiyun }
129*4882a593Smuzhiyun
130*4882a593Smuzhiyun if (dm_gpio_get_value(&resin)) {
131*4882a593Smuzhiyun env_set("bootdelay", "-1");
132*4882a593Smuzhiyun printf("Power button pressed - dropping to console.\n");
133*4882a593Smuzhiyun }
134*4882a593Smuzhiyun
135*4882a593Smuzhiyun return 0;
136*4882a593Smuzhiyun }
137