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4d573d5c98
Add support for DH electronics i.MX8M Plus DHCOM SoM on PDK2 carrier board. Currently supported are serial console, EQoS and FEC ethernets, eMMC, SD, SPI NOR and USB 3.0 host. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <festevam@denx.de> Cc: Peng Fan <peng.fan@nxp.com> Cc: Stefano Babic <sbabic@denx.de>
38 lines
718 B
C
38 lines
718 B
C
// 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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