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https://github.com/AsahiLinux/u-boot
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38 lines
718 B
C
38 lines
718 B
C
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2022 Marek Vasut <marex@denx.de>
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm-generic/gpio.h>
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#include "lpddr4_timing.h"
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DECLARE_GLOBAL_DATA_PTR;
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u8 dh_get_memcfg(void)
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{
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struct gpio_desc gpio[4];
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u8 memcfg = 0;
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ofnode node;
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int i, ret;
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node = ofnode_path("/config");
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if (!ofnode_valid(node)) {
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printf("%s: no /config node?\n", __func__);
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return BIT(2) | BIT(0);
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}
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ret = gpio_request_list_by_name_nodev(node,
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"dh,ram-coding-gpios",
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gpio, ARRAY_SIZE(gpio),
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GPIOD_IS_IN);
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for (i = 0; i < ret; i++)
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memcfg |= !!dm_gpio_get_value(&(gpio[i])) << i;
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gpio_free_list_nodev(gpio, ret);
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return memcfg;
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}
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