| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2022 Marek Vasut <marex@denx.de> |
| */ |
| |
| #include <common.h> |
| #include <asm/io.h> |
| #include <asm-generic/gpio.h> |
| |
| #include "lpddr4_timing.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| u8 dmo_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, |
| "dmo,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; |
| } |