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/*
* 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, pmic_gpio->of_offset,
"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, pmic_gpio->of_offset,
"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, pon->of_offset, "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;
}
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