2 * Copyright (c) 2013 Google, Inc
5 * Pavel Herrmann <morpheus.ibis@gmail.com>
7 * SPDX-License-Identifier: GPL-2.0+
16 * dm_root() - Return pointer to the top of the driver tree
18 * This function returns pointer to the root node of the driver tree,
20 * @return pointer to root device, or NULL if not inited yet
22 struct udevice *dm_root(void);
25 * dm_scan_platdata() - Scan all platform data and bind drivers
27 * This scans all available platdata and creates drivers for each
29 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
30 * flag. If false bind all drivers.
31 * @return 0 if OK, -ve on error
33 int dm_scan_platdata(bool pre_reloc_only);
36 * dm_scan_fdt() - Scan the device tree and bind drivers
38 * This scans the device tree and creates a driver for each node. Only
39 * the top-level subnodes are examined.
41 * @blob: Pointer to device tree blob
42 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
43 * flag. If false bind all drivers.
44 * @return 0 if OK, -ve on error
46 int dm_scan_fdt(const void *blob, bool pre_reloc_only);
49 * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
51 * This scans the subnodes of a device tree node and and creates a driver
54 * @parent: Parent device for the devices that will be created
55 * @blob: Pointer to device tree blob
56 * @offset: Offset of node to scan
57 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
58 * flag. If false bind all drivers.
59 * @return 0 if OK, -ve on error
61 int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
65 * dm_init_and_scan() - Initialise Driver Model structures and scan for devices
67 * This function initialises the roots of the driver tree and uclass trees,
68 * then scans and binds available devices from platform data and the FDT.
69 * This calls dm_init() to set up Driver Model structures.
71 * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
72 * flag. If false bind all drivers.
73 * @return 0 if OK, -ve on error
75 int dm_init_and_scan(bool pre_reloc_only);
78 * dm_init() - Initialise Driver Model structures
80 * This function will initialize roots of driver tree and class tree.
81 * This needs to be called before anything uses the DM
83 * @return 0 if OK, -ve on error
88 * dm_uninit - Uninitialise Driver Model structures
90 * All devices will be removed and unbound
91 * @return 0 if OK, -ve on error