[J-u-boot.git] / board / dhelectronics / dh_imx8mp / common.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2022 Marek Vasut <[email protected]>
 */

#include <asm/io.h>
#include <asm-generic/gpio.h>

#include "lpddr4_timing.h"

DECLARE_GLOBAL_DATA_PTR;

u8 dh_get_memcfg(void)
{
	struct gpio_desc gpio[4];
	u8 memcfg = 0;
	ofnode node;
	int i, ret;

	node = ofnode_path("/config");
	if (!ofnode_valid(node)) {
		printf("%s: no /config node?\n", __func__);
		return BIT(2) | BIT(0);
	}

	ret = gpio_request_list_by_name_nodev(node,
					      "dh,ram-coding-gpios",
					      gpio, ARRAY_SIZE(gpio),
					      GPIOD_IS_IN);
	for (i = 0; i < ret; i++)
		memcfg |= !!dm_gpio_get_value(&(gpio[i])) << i;

	gpio_free_list_nodev(gpio, ret);

	return memcfg;
}
Commit	Line	Data
4d573d5c MV	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright 2022 Marek Vasut <[email protected]>
	4	*/
	5
4d573d5c MV	6	#include <asm/io.h>
	7	#include <asm-generic/gpio.h>
	8
	9	#include "lpddr4_timing.h"
	10
	11	DECLARE_GLOBAL_DATA_PTR;
	12
	13	u8 dh_get_memcfg(void)
	14	{
	15	struct gpio_desc gpio[4];
	16	u8 memcfg = 0;
	17	ofnode node;
	18	int i, ret;
	19
	20	node = ofnode_path("/config");
	21	if (!ofnode_valid(node)) {
	22	printf("%s: no /config node?\n", __func__);
	23	return BIT(2) \| BIT(0);
	24	}
	25
	26	ret = gpio_request_list_by_name_nodev(node,
	27	"dh,ram-coding-gpios",
	28	gpio, ARRAY_SIZE(gpio),
	29	GPIOD_IS_IN);
	30	for (i = 0; i < ret; i++)
	31	memcfg \|= !!dm_gpio_get_value(&(gpio[i])) << i;
	32
	33	gpio_free_list_nodev(gpio, ret);
	34
	35	return memcfg;
	36	}