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https://github.com/AsahiLinux/u-boot
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43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Library to support common device tree manipulation for TI EVMs
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*
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* Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com
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*/
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#ifndef __FDT_OPS_H
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#define __FDT_OPS_H
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#define TI_BOARD_NAME_MAX 20
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#define TI_FDT_FILE_MAX 200
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/**
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* struct ti_fdt_map - mapping of device tree blob name to board name
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* @board_name: board_name up to TI_BOARD_NAME_MAX long
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* @fdt_file_name: device tree blob name as described by kernel
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*/
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struct ti_fdt_map {
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const char *board_name;
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char *fdt_file_name;
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};
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/**
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* ti_set_fdt_env - Find the correct device tree file name based on the
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* board name and set 'fdtfile' env variable with correct folder
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* structure appropriate to the architecture and Linux kernel's
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* 'make install_dtbs' conventions. This function is invoked typically
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* as part of board_late_init.
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*
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* fdt name is picked by:
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* a) If a board name match is found, use the match
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* b) If not, CONFIG_DEFAULT_FDT_FILE (Boot OS device tree) if that is defined
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* and not null
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* c) If not, Use CONFIG_DEFAULT_DEVICE_TREE (DT control for bootloader)
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*
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* @board_name: match to search with (max of TI_BOARD_NAME_MAX chars)
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* @fdt_map: NULL terminated array of device tree file name matches.
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*/
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void ti_set_fdt_env(const char *board_name, struct ti_fdt_map *fdt_map);
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#endif /* __FDT_OPS_H */
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