upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
2.9 KiB
118 lines
2.9 KiB
7 years ago
|
#include <common.h>
|
||
|
|
#include <asm/arch/gpio.h>
|
||
|
|
#include <dm.h>
|
||
|
|
#include <dm/pinctrl.h>
|
||
|
|
|
||
|
|
DECLARE_GLOBAL_DATA_PTR;
|
||
|
|
|
||
|
|
static int prep_gpio_dsc(struct stm32_gpio_dsc *gpio_dsc, u32 port_pin)
|
||
|
|
{
|
||
|
|
gpio_dsc->port = (port_pin & 0xF000) >> 12;
|
||
|
|
gpio_dsc->pin = (port_pin & 0x0F00) >> 8;
|
||
|
|
debug("%s: GPIO:port= %d, pin= %d\n", __func__, gpio_dsc->port,
|
||
|
|
gpio_dsc->pin);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int prep_gpio_ctl(struct stm32_gpio_ctl *gpio_ctl, u32 gpio_fn, int node)
|
||
|
|
{
|
||
|
|
gpio_fn &= 0x00FF;
|
||
|
|
|
||
|
|
switch (gpio_fn) {
|
||
|
|
case 0:
|
||
|
|
gpio_ctl->mode = STM32_GPIO_MODE_IN;
|
||
|
|
break;
|
||
|
|
case 1 ... 16:
|
||
|
|
gpio_ctl->mode = STM32_GPIO_MODE_AF;
|
||
|
|
gpio_ctl->af = gpio_fn - 1;
|
||
|
|
break;
|
||
|
|
case 17:
|
||
|
|
gpio_ctl->mode = STM32_GPIO_MODE_AN;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
gpio_ctl->mode = STM32_GPIO_MODE_OUT;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
gpio_ctl->speed = fdtdec_get_int(gd->fdt_blob, node, "slew-rate", 0);
|
||
|
|
|
||
|
|
if (fdtdec_get_bool(gd->fdt_blob, node, "drive-open-drain"))
|
||
|
|
gpio_ctl->otype = STM32_GPIO_OTYPE_OD;
|
||
|
|
else
|
||
|
|
gpio_ctl->otype = STM32_GPIO_OTYPE_PP;
|
||
|
|
|
||
|
|
if (fdtdec_get_bool(gd->fdt_blob, node, "bias-pull-up"))
|
||
|
|
gpio_ctl->pupd = STM32_GPIO_PUPD_UP;
|
||
|
|
else if (fdtdec_get_bool(gd->fdt_blob, node, "bias-pull-down"))
|
||
|
|
gpio_ctl->pupd = STM32_GPIO_PUPD_DOWN;
|
||
|
|
else
|
||
|
|
gpio_ctl->pupd = STM32_GPIO_PUPD_NO;
|
||
|
|
|
||
|
|
debug("%s: gpio fn= %d, slew-rate= %x, op type= %x, pull-upd is = %x\n",
|
||
|
|
__func__, gpio_fn, gpio_ctl->speed, gpio_ctl->otype,
|
||
|
|
gpio_ctl->pupd);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int stm32_pinctrl_set_state_simple(struct udevice *dev,
|
||
|
|
struct udevice *periph)
|
||
|
|
{
|
||
|
|
u32 pin_mux[50];
|
||
|
|
struct fdtdec_phandle_args args;
|
||
|
|
int rv, len;
|
||
|
|
|
||
|
|
/* Get node pinctrl-0 */
|
||
|
|
rv = fdtdec_parse_phandle_with_args(gd->fdt_blob, periph->of_offset,
|
||
|
|
"pinctrl-0", 0, 0, 0, &args);
|
||
|
|
if (rv)
|
||
|
|
return rv;
|
||
|
|
/*
|
||
|
|
* check for "pinmux" property in each subnode (e.g. pins1 and pins2 for
|
||
|
|
* usart1) of pin controller phandle "pinctrl-0"
|
||
|
|
* */
|
||
|
|
fdt_for_each_subnode(args.node, gd->fdt_blob, args.node) {
|
||
|
|
struct stm32_gpio_dsc gpio_dsc;
|
||
|
|
struct stm32_gpio_ctl gpio_ctl;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
len = fdtdec_get_int_array_count(gd->fdt_blob, args.node,
|
||
|
|
"pinmux", pin_mux,
|
||
|
|
ARRAY_SIZE(pin_mux));
|
||
|
|
debug("%s: periph->name = %s, no of pinmux entries= %d\n",
|
||
|
|
__func__, periph->name, len);
|
||
|
|
if (len < 0)
|
||
|
|
return -EINVAL;
|
||
|
|
for (i = 0; i < len; i++) {
|
||
|
|
debug("%s: pinmux = %x\n", __func__, *(pin_mux + i));
|
||
|
|
prep_gpio_dsc(&gpio_dsc, *(pin_mux + i));
|
||
|
|
prep_gpio_ctl(&gpio_ctl, *(pin_mux + i), args.node);
|
||
|
|
|
||
|
|
rv = stm32_gpio_config(&gpio_dsc, &gpio_ctl);
|
||
|
|
debug("%s: rv = %d\n\n", __func__, rv);
|
||
|
|
if (rv)
|
||
|
|
return rv;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct pinctrl_ops stm32_pinctrl_ops = {
|
||
|
|
.set_state_simple = stm32_pinctrl_set_state_simple,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct udevice_id stm32_pinctrl_ids[] = {
|
||
|
|
{ .compatible = "st,stm32f746-pinctrl" },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
|
||
|
|
U_BOOT_DRIVER(pinctrl_stm32) = {
|
||
|
|
.name = "pinctrl_stm32",
|
||
|
|
.id = UCLASS_PINCTRL,
|
||
|
|
.of_match = stm32_pinctrl_ids,
|
||
|
|
.ops = &stm32_pinctrl_ops,
|
||
|
|
.bind = dm_scan_fdt_dev,
|
||
|
|
};
|