1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Function to read values from the device tree node attached to a udevice.
5 * Copyright (c) 2017 Google, Inc
6 * Written by Simon Glass <sjg@chromium.org>
12 #include <linux/errno.h>
14 #include <dm/device.h>
15 #include <dm/fdtaddr.h>
16 #include <dm/ofnode.h>
17 #include <dm/uclass.h>
21 #if CONFIG_IS_ENABLED(OF_LIVE)
22 static inline const struct device_node *dev_np(const struct udevice *dev)
24 return ofnode_to_np(dev_ofnode(dev));
27 static inline const struct device_node *dev_np(const struct udevice *dev)
33 #if !defined(CONFIG_DM_DEV_READ_INLINE) || CONFIG_IS_ENABLED(OF_PLATDATA)
35 * dev_read_u32() - read a 32-bit integer from a device's DT property
37 * @dev: device to read DT property from
38 * @propname: name of the property to read from
39 * @outp: place to put value (if found)
40 * @return 0 if OK, -ve on error
42 int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp);
45 * dev_read_u32_default() - read a 32-bit integer from a device's DT property
47 * @dev: device to read DT property from
48 * @propname: name of the property to read from
49 * @def: default value to return if the property has no value
50 * @return property value, or @def if not found
52 int dev_read_u32_default(const struct udevice *dev, const char *propname,
56 * dev_read_u32_index() - read an indexed 32-bit integer from a device's DT
59 * @dev: device to read DT property from
60 * @propname: name of the property to read from
61 * @index: index of the integer to return
62 * @outp: place to put value (if found)
63 * @return 0 if OK, -ve on error
65 int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
69 * dev_read_u32_index_default() - read an indexed 32-bit integer from a device's
72 * @dev: device to read DT property from
73 * @propname: name of the property to read from
74 * @index: index of the integer to return
75 * @def: default value to return if the property has no value
76 * @return property value, or @def if not found
78 u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
82 * dev_read_s32() - read a signed 32-bit integer from a device's DT property
84 * @dev: device to read DT property from
85 * @propname: name of the property to read from
86 * @outp: place to put value (if found)
87 * @return 0 if OK, -ve on error
89 int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp);
92 * dev_read_s32_default() - read a signed 32-bit int from a device's DT property
94 * @dev: device to read DT property from
95 * @propname: name of the property to read from
96 * @def: default value to return if the property has no value
97 * @return property value, or @def if not found
99 int dev_read_s32_default(const struct udevice *dev, const char *propname,
103 * dev_read_u32u() - read a 32-bit integer from a device's DT property
105 * This version uses a standard uint type.
107 * @dev: device to read DT property from
108 * @propname: name of the property to read from
109 * @outp: place to put value (if found)
110 * @return 0 if OK, -ve on error
112 int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp);
115 * dev_read_u64() - read a 64-bit integer from a device's DT property
117 * @dev: device to read DT property from
118 * @propname: name of the property to read from
119 * @outp: place to put value (if found)
120 * @return 0 if OK, -ve on error
122 int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp);
125 * dev_read_u64_default() - read a 64-bit integer from a device's DT property
127 * @dev: device to read DT property from
128 * @propname: name of the property to read from
129 * @def: default value to return if the property has no value
130 * @return property value, or @def if not found
132 u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
136 * dev_read_string() - Read a string from a device's DT property
138 * @dev: device to read DT property from
139 * @propname: name of the property to read
140 * @return string from property value, or NULL if there is no such property
142 const char *dev_read_string(const struct udevice *dev, const char *propname);
145 * dev_read_bool() - read a boolean value from a device's DT property
147 * @dev: device to read DT property from
148 * @propname: name of property to read
149 * @return true if property is present (meaning true), false if not present
151 bool dev_read_bool(const struct udevice *dev, const char *propname);
154 * dev_read_subnode() - find a named subnode of a device
156 * @dev: device whose DT node contains the subnode
157 * @subnode_name: name of subnode to find
158 * @return reference to subnode (which can be invalid if there is no such
161 ofnode dev_read_subnode(const struct udevice *dev, const char *subbnode_name);
164 * dev_read_size() - read the size of a property
166 * @dev: device to check
167 * @propname: property to check
168 * @return size of property if present, or -EINVAL if not
170 int dev_read_size(const struct udevice *dev, const char *propname);
173 * dev_read_addr_index() - Get the indexed reg property of a device
175 * @dev: Device to read from
176 * @index: the 'reg' property can hold a list of <addr, size> pairs
177 * and @index is used to select which one is required
179 * @return address or FDT_ADDR_T_NONE if not found
181 fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index);
184 * dev_read_addr_size_index() - Get the indexed reg property of a device
186 * @dev: Device to read from
187 * @index: the 'reg' property can hold a list of <addr, size> pairs
188 * and @index is used to select which one is required
189 * @size: place to put size value (on success)
191 * @return address or FDT_ADDR_T_NONE if not found
193 fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
197 * dev_remap_addr_index() - Get the indexed reg property of a device
198 * as a memory-mapped I/O pointer
200 * @dev: Device to read from
201 * @index: the 'reg' property can hold a list of <addr, size> pairs
202 * and @index is used to select which one is required
204 * @return pointer or NULL if not found
206 void *dev_remap_addr_index(const struct udevice *dev, int index);
209 * dev_read_addr_name() - Get the reg property of a device, indexed by name
211 * @dev: Device to read from
212 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
213 * 'reg-names' property providing named-based identification. @index
214 * indicates the value to search for in 'reg-names'.
216 * @return address or FDT_ADDR_T_NONE if not found
218 fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name);
221 * dev_read_addr_size_name() - Get the reg property of a device, indexed by name
223 * @dev: Device to read from
224 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
225 * 'reg-names' property providing named-based identification. @index
226 * indicates the value to search for in 'reg-names'.
227 * @size: place to put size value (on success)
229 * @return address or FDT_ADDR_T_NONE if not found
231 fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
235 * dev_remap_addr_name() - Get the reg property of a device, indexed by name,
236 * as a memory-mapped I/O pointer
238 * @dev: Device to read from
239 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
240 * 'reg-names' property providing named-based identification. @index
241 * indicates the value to search for in 'reg-names'.
243 * @return pointer or NULL if not found
245 void *dev_remap_addr_name(const struct udevice *dev, const char *name);
248 * dev_read_addr() - Get the reg property of a device
250 * @dev: Device to read from
252 * @return address or FDT_ADDR_T_NONE if not found
254 fdt_addr_t dev_read_addr(const struct udevice *dev);
257 * dev_read_addr_ptr() - Get the reg property of a device
260 * @dev: Device to read from
262 * @return pointer or NULL if not found
264 void *dev_read_addr_ptr(const struct udevice *dev);
267 * dev_read_addr_pci() - Read an address and handle PCI address translation
269 * At present U-Boot does not have address translation logic for PCI in the
270 * livetree implementation (of_addr.c). This special function supports this for
271 * the flat tree implementation.
273 * This function should be removed (and code should use dev_read() instead)
276 * 1. PCI address translation is added; and either
277 * 2. everything uses livetree where PCI translation is used (which is feasible
278 * in SPL and U-Boot proper) or PCI address translation is added to
279 * fdtdec_get_addr() and friends.
281 * @dev: Device to read from
282 * @return address or FDT_ADDR_T_NONE if not found
284 fdt_addr_t dev_read_addr_pci(const struct udevice *dev);
287 * dev_remap_addr() - Get the reg property of a device as a
288 * memory-mapped I/O pointer
290 * @dev: Device to read from
292 * @return pointer or NULL if not found
294 void *dev_remap_addr(const struct udevice *dev);
297 * dev_read_addr_size() - get address and size from a device property
299 * This does no address translation. It simply reads an property that contains
300 * an address and a size value, one after the other.
302 * @dev: Device to read from
303 * @propname: property to read
304 * @sizep: place to put size value (on success)
305 * @return address value, or FDT_ADDR_T_NONE on error
307 fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *propname,
311 * dev_read_name() - get the name of a device's node
313 * @dev: Device to read from
314 * @return name of node
316 const char *dev_read_name(const struct udevice *dev);
319 * dev_read_stringlist_search() - find string in a string list and return index
321 * Note that it is possible for this function to succeed on property values
322 * that are not NUL-terminated. That's because the function will stop after
323 * finding the first occurrence of @string. This can for example happen with
324 * small-valued cell properties, such as #address-cells, when searching for
327 * @dev: device to check
328 * @propname: name of the property containing the string list
329 * @string: string to look up in the string list
332 * the index of the string in the list of strings
333 * -ENODATA if the property is not found
334 * -EINVAL on some other error
336 int dev_read_stringlist_search(const struct udevice *dev, const char *property,
340 * dev_read_string_index() - obtain an indexed string from a string list
342 * @dev: device to examine
343 * @propname: name of the property containing the string list
344 * @index: index of the string to return
345 * @out: return location for the string
348 * length of string, if found or -ve error value if not found
350 int dev_read_string_index(const struct udevice *dev, const char *propname,
351 int index, const char **outp);
354 * dev_read_string_count() - find the number of strings in a string list
356 * @dev: device to examine
357 * @propname: name of the property containing the string list
359 * number of strings in the list, or -ve error value if not found
361 int dev_read_string_count(const struct udevice *dev, const char *propname);
363 * dev_read_phandle_with_args() - Find a node pointed by phandle in a list
365 * This function is useful to parse lists of phandles and their arguments.
366 * Returns 0 on success and fills out_args, on error returns appropriate
369 * Caller is responsible to call of_node_put() on the returned out_args->np
383 * list = <&phandle1 1 2 &phandle2 3>;
386 * To get a device_node of the `node2' node you may call this:
387 * dev_read_phandle_with_args(dev, "list", "#list-cells", 0, 1, &args);
389 * @dev: device whose node containing a list
390 * @list_name: property name that contains a list
391 * @cells_name: property name that specifies phandles' arguments count
392 * @cells_count: Cell count to use if @cells_name is NULL
393 * @index: index of a phandle to parse out
394 * @out_args: optional pointer to output arguments structure (will be filled)
395 * @return 0 on success (with @out_args filled out if not NULL), -ENOENT if
396 * @list_name does not exist, -EINVAL if a phandle was not found,
397 * @cells_name could not be found, the arguments were truncated or there
398 * were too many arguments.
400 int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
401 const char *cells_name, int cell_count,
402 int index, struct ofnode_phandle_args *out_args);
405 * dev_count_phandle_with_args() - Return phandle number in a list
407 * This function is usefull to get phandle number contained in a property list.
408 * For example, this allows to allocate the right amount of memory to keep
409 * clock's reference contained into the "clocks" property.
412 * @dev: device whose node containing a list
413 * @list_name: property name that contains a list
414 * @cells_name: property name that specifies phandles' arguments count
415 * @cells_count: Cell count to use if @cells_name is NULL
416 * @Returns number of phandle found on success, on error returns appropriate
420 int dev_count_phandle_with_args(const struct udevice *dev,
421 const char *list_name, const char *cells_name,
425 * dev_read_addr_cells() - Get the number of address cells for a device's node
427 * This walks back up the tree to find the closest #address-cells property
428 * which controls the given node.
430 * @dev: device to check
431 * @return number of address cells this node uses
433 int dev_read_addr_cells(const struct udevice *dev);
436 * dev_read_size_cells() - Get the number of size cells for a device's node
438 * This walks back up the tree to find the closest #size-cells property
439 * which controls the given node.
441 * @dev: device to check
442 * @return number of size cells this node uses
444 int dev_read_size_cells(const struct udevice *dev);
447 * dev_read_addr_cells() - Get the address cells property in a node
449 * This function matches fdt_address_cells().
451 * @dev: device to check
452 * @return number of address cells this node uses
454 int dev_read_simple_addr_cells(const struct udevice *dev);
457 * dev_read_size_cells() - Get the size cells property in a node
459 * This function matches fdt_size_cells().
461 * @dev: device to check
462 * @return number of size cells this node uses
464 int dev_read_simple_size_cells(const struct udevice *dev);
467 * dev_read_phandle() - Get the phandle from a device
469 * @dev: device to check
470 * @return phandle (1 or greater), or 0 if no phandle or other error
472 int dev_read_phandle(const struct udevice *dev);
475 * dev_read_prop()- - read a property from a device's node
477 * @dev: device to check
478 * @propname: property to read
479 * @lenp: place to put length on success
480 * @return pointer to property, or NULL if not found
482 const void *dev_read_prop(const struct udevice *dev, const char *propname,
486 * dev_read_first_prop()- get the reference of the first property
488 * Get reference to the first property of the node, it is used to iterate
489 * and read all the property with dev_read_prop_by_prop().
491 * @dev: device to check
492 * @prop: place to put argument reference
493 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
495 int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop);
498 * ofnode_get_next_property() - get the reference of the next property
500 * Get reference to the next property of the node, it is used to iterate
501 * and read all the property with dev_read_prop_by_prop().
503 * @prop: reference of current argument and place to put reference of next one
504 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
506 int dev_read_next_prop(struct ofprop *prop);
509 * dev_read_prop_by_prop() - get a pointer to the value of a property
511 * Get value for the property identified by the provided reference.
513 * @prop: reference on property
514 * @propname: If non-NULL, place to property name on success,
515 * @lenp: If non-NULL, place to put length on success
516 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
518 const void *dev_read_prop_by_prop(struct ofprop *prop,
519 const char **propname, int *lenp);
522 * dev_read_alias_seq() - Get the alias sequence number of a node
524 * This works out whether a node is pointed to by an alias, and if so, the
525 * sequence number of that alias. Aliases are of the form <base><num> where
526 * <num> is the sequence number. For example spi2 would be sequence number 2.
528 * @dev: device to look up
529 * @devnump: set to the sequence number if one is found
530 * @return 0 if a sequence was found, -ve if not
532 int dev_read_alias_seq(const struct udevice *dev, int *devnump);
535 * dev_read_u32_array() - Find and read an array of 32 bit integers
537 * Search for a property in a device node and read 32-bit value(s) from
540 * The out_values is modified only if a valid u32 value can be decoded.
542 * @dev: device to look up
543 * @propname: name of the property to read
544 * @out_values: pointer to return value, modified only if return value is 0
545 * @sz: number of array elements to read
546 * @return 0 on success, -EINVAL if the property does not exist, -ENODATA if
547 * property does not have a value, and -EOVERFLOW if the property data isn't
550 int dev_read_u32_array(const struct udevice *dev, const char *propname,
551 u32 *out_values, size_t sz);
554 * dev_read_first_subnode() - find the first subnode of a device's node
556 * @dev: device to look up
557 * @return reference to the first subnode (which can be invalid if the device's
558 * node has no subnodes)
560 ofnode dev_read_first_subnode(const struct udevice *dev);
563 * ofnode_next_subnode() - find the next sibling of a subnode
565 * @node: valid reference to previous node (sibling)
566 * @return reference to the next subnode (which can be invalid if the node
567 * has no more siblings)
569 ofnode dev_read_next_subnode(ofnode node);
572 * dev_read_u8_array_ptr() - find an 8-bit array
574 * Look up a device's node property and return a pointer to its contents as a
575 * byte array of given length. The property must have at least enough data
576 * for the array (count bytes). It may have more, but this will be ignored.
577 * The data is not copied.
579 * @dev: device to look up
580 * @propname: name of property to find
581 * @sz: number of array elements
582 * @return pointer to byte array if found, or NULL if the property is not
583 * found or there is not enough data
585 const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
586 const char *propname, size_t sz);
589 * dev_read_enabled() - check whether a node is enabled
591 * This looks for a 'status' property. If this exists, then returns 1 if
592 * the status is 'ok' and 0 otherwise. If there is no status property,
593 * it returns 1 on the assumption that anything mentioned should be enabled
596 * @dev: device to examine
597 * @return integer value 0 (not enabled) or 1 (enabled)
599 int dev_read_enabled(const struct udevice *dev);
602 * dev_read_resource() - obtain an indexed resource from a device.
604 * @dev: device to examine
605 * @index index of the resource to retrieve (0 = first)
606 * @res returns the resource
607 * @return 0 if ok, negative on error
609 int dev_read_resource(const struct udevice *dev, uint index,
610 struct resource *res);
613 * dev_read_resource_byname() - obtain a named resource from a device.
615 * @dev: device to examine
616 * @name: name of the resource to retrieve
617 * @res: returns the resource
618 * @return 0 if ok, negative on error
620 int dev_read_resource_byname(const struct udevice *dev, const char *name,
621 struct resource *res);
624 * dev_translate_address() - Translate a device-tree address
626 * Translate an address from the device-tree into a CPU physical address. This
627 * function walks up the tree and applies the various bus mappings along the
630 * @dev: device giving the context in which to translate the address
631 * @in_addr: pointer to the address to translate
632 * @return the translated address; OF_BAD_ADDR on error
634 u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr);
637 * dev_translate_dma_address() - Translate a device-tree DMA address
639 * Translate a DMA address from the device-tree into a CPU physical address.
640 * This function walks up the tree and applies the various bus mappings along
643 * @dev: device giving the context in which to translate the DMA address
644 * @in_addr: pointer to the DMA address to translate
645 * @return the translated DMA address; OF_BAD_ADDR on error
647 u64 dev_translate_dma_address(const struct udevice *dev,
648 const fdt32_t *in_addr);
651 * dev_get_dma_range() - Get a device's DMA constraints
653 * Provide the address bases and size of the linear mapping between the CPU and
654 * a device's BUS address space.
656 * @dev: device giving the context in which to translate the DMA address
657 * @cpu: base address for CPU's view of memory
658 * @bus: base address for BUS's view of memory
659 * @size: size of the address space
660 * @return 0 if ok, negative on error
662 int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
663 dma_addr_t *bus, u64 *size);
666 * dev_read_alias_highest_id - Get highest alias id for the given stem
667 * @stem: Alias stem to be examined
669 * The function travels the lookup table to get the highest alias id for the
671 * @return alias ID, if found, else -1
673 int dev_read_alias_highest_id(const char *stem);
676 * dev_get_child_count() - get the child count of a device
678 * @dev: device to use for interation (struct udevice *)
679 * @return the count of child subnode
681 int dev_get_child_count(const struct udevice *dev);
684 * dev_read_pci_bus_range - Read PCI bus-range resource
686 * Look at the bus range property of a device node and return the pci bus
687 * range for this node.
689 * @dev: device to examine
690 * @res returns the resource
691 * @return 0 if ok, negative on error
693 int dev_read_pci_bus_range(const struct udevice *dev, struct resource *res);
696 * dev_decode_display_timing() - decode display timings
698 * Decode display timings from the supplied 'display-timings' node.
699 * See doc/device-tree-bindings/video/display-timing.txt for binding
702 * @dev: device to read DT display timings from. The node linked to the device
703 * contains a child node called 'display-timings' which in turn contains
704 * one or more display timing nodes.
705 * @index: index number to read (0=first timing subnode)
706 * @config: place to put timings
707 * @return 0 if OK, -FDT_ERR_NOTFOUND if not found
709 int dev_decode_display_timing(const struct udevice *dev, int index,
710 struct display_timing *config);
712 #else /* CONFIG_DM_DEV_READ_INLINE is enabled */
713 #include <asm/global_data.h>
715 static inline int dev_read_u32(const struct udevice *dev,
716 const char *propname, u32 *outp)
718 return ofnode_read_u32(dev_ofnode(dev), propname, outp);
721 static inline int dev_read_u32_default(const struct udevice *dev,
722 const char *propname, int def)
724 return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
727 static inline int dev_read_u32_index(struct udevice *dev,
728 const char *propname, int index, u32 *outp)
730 return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
733 static inline u32 dev_read_u32_index_default(struct udevice *dev,
734 const char *propname, int index,
737 return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
741 static inline int dev_read_s32(const struct udevice *dev,
742 const char *propname, s32 *outp)
744 return ofnode_read_s32(dev_ofnode(dev), propname, outp);
747 static inline int dev_read_s32_default(const struct udevice *dev,
748 const char *propname, int def)
750 return ofnode_read_s32_default(dev_ofnode(dev), propname, def);
753 static inline int dev_read_u32u(const struct udevice *dev,
754 const char *propname, uint *outp)
759 ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
767 static inline int dev_read_u64(const struct udevice *dev,
768 const char *propname, u64 *outp)
770 return ofnode_read_u64(dev_ofnode(dev), propname, outp);
773 static inline u64 dev_read_u64_default(const struct udevice *dev,
774 const char *propname, u64 def)
776 return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
779 static inline const char *dev_read_string(const struct udevice *dev,
780 const char *propname)
782 return ofnode_read_string(dev_ofnode(dev), propname);
785 static inline bool dev_read_bool(const struct udevice *dev,
786 const char *propname)
788 return ofnode_read_bool(dev_ofnode(dev), propname);
791 static inline ofnode dev_read_subnode(const struct udevice *dev,
792 const char *subbnode_name)
794 return ofnode_find_subnode(dev_ofnode(dev), subbnode_name);
797 static inline int dev_read_size(const struct udevice *dev, const char *propname)
799 return ofnode_read_size(dev_ofnode(dev), propname);
802 static inline fdt_addr_t dev_read_addr_index(const struct udevice *dev,
805 return devfdt_get_addr_index(dev, index);
808 static inline fdt_addr_t dev_read_addr_size_index(const struct udevice *dev,
812 return devfdt_get_addr_size_index(dev, index, size);
815 static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev,
818 return devfdt_get_addr_name(dev, name);
821 static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev,
825 return devfdt_get_addr_size_name(dev, name, size);
828 static inline fdt_addr_t dev_read_addr(const struct udevice *dev)
830 return devfdt_get_addr(dev);
833 static inline void *dev_read_addr_ptr(const struct udevice *dev)
835 return devfdt_get_addr_ptr(dev);
838 static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
840 return devfdt_get_addr_pci(dev);
843 static inline void *dev_remap_addr(const struct udevice *dev)
845 return devfdt_remap_addr(dev);
848 static inline void *dev_remap_addr_index(const struct udevice *dev, int index)
850 return devfdt_remap_addr_index(dev, index);
853 static inline void *dev_remap_addr_name(const struct udevice *dev,
856 return devfdt_remap_addr_name(dev, name);
859 static inline fdt_addr_t dev_read_addr_size(const struct udevice *dev,
860 const char *propname,
863 return ofnode_get_addr_size(dev_ofnode(dev), propname, sizep);
866 static inline const char *dev_read_name(const struct udevice *dev)
868 return ofnode_get_name(dev_ofnode(dev));
871 static inline int dev_read_stringlist_search(const struct udevice *dev,
872 const char *propname,
875 return ofnode_stringlist_search(dev_ofnode(dev), propname, string);
878 static inline int dev_read_string_index(const struct udevice *dev,
879 const char *propname, int index,
882 return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
885 static inline int dev_read_string_count(const struct udevice *dev,
886 const char *propname)
888 return ofnode_read_string_count(dev_ofnode(dev), propname);
891 static inline int dev_read_phandle_with_args(const struct udevice *dev,
892 const char *list_name, const char *cells_name, int cell_count,
893 int index, struct ofnode_phandle_args *out_args)
895 return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
896 cells_name, cell_count, index,
900 static inline int dev_count_phandle_with_args(const struct udevice *dev,
901 const char *list_name, const char *cells_name, int cell_count)
903 return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
904 cells_name, cell_count);
907 static inline int dev_read_addr_cells(const struct udevice *dev)
909 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
911 return fdt_address_cells(gd->fdt_blob, parent);
914 static inline int dev_read_size_cells(const struct udevice *dev)
916 int parent = fdt_parent_offset(gd->fdt_blob, dev_of_offset(dev));
918 return fdt_size_cells(gd->fdt_blob, parent);
921 static inline int dev_read_simple_addr_cells(const struct udevice *dev)
923 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev));
926 static inline int dev_read_simple_size_cells(const struct udevice *dev)
928 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev));
931 static inline int dev_read_phandle(const struct udevice *dev)
933 return fdt_get_phandle(gd->fdt_blob, dev_of_offset(dev));
936 static inline const void *dev_read_prop(const struct udevice *dev,
937 const char *propname, int *lenp)
939 return ofnode_get_property(dev_ofnode(dev), propname, lenp);
942 static inline int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
944 return ofnode_get_first_property(dev_ofnode(dev), prop);
947 static inline int dev_read_next_prop(struct ofprop *prop)
949 return ofnode_get_next_property(prop);
952 static inline const void *dev_read_prop_by_prop(struct ofprop *prop,
953 const char **propname,
956 return ofnode_get_property_by_prop(prop, propname, lenp);
959 static inline int dev_read_alias_seq(const struct udevice *dev, int *devnump)
961 #if CONFIG_IS_ENABLED(OF_CONTROL)
962 return fdtdec_get_alias_seq(gd->fdt_blob, dev->uclass->uc_drv->name,
963 dev_of_offset(dev), devnump);
969 static inline int dev_read_u32_array(const struct udevice *dev,
970 const char *propname, u32 *out_values,
973 return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
976 static inline ofnode dev_read_first_subnode(const struct udevice *dev)
978 return ofnode_first_subnode(dev_ofnode(dev));
981 static inline ofnode dev_read_next_subnode(ofnode node)
983 return ofnode_next_subnode(node);
986 static inline const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
987 const char *propname,
990 return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
993 static inline int dev_read_enabled(const struct udevice *dev)
995 return fdtdec_get_is_enabled(gd->fdt_blob, dev_of_offset(dev));
998 static inline int dev_read_resource(const struct udevice *dev, uint index,
999 struct resource *res)
1001 return ofnode_read_resource(dev_ofnode(dev), index, res);
1004 static inline int dev_read_resource_byname(const struct udevice *dev,
1006 struct resource *res)
1008 return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
1011 static inline u64 dev_translate_address(const struct udevice *dev,
1012 const fdt32_t *in_addr)
1014 return ofnode_translate_address(dev_ofnode(dev), in_addr);
1017 static inline u64 dev_translate_dma_address(const struct udevice *dev,
1018 const fdt32_t *in_addr)
1020 return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
1023 static inline int dev_get_dma_range(const struct udevice *dev, phys_addr_t *cpu,
1024 dma_addr_t *bus, u64 *size)
1026 return ofnode_get_dma_range(dev_ofnode(dev), cpu, bus, size);
1029 static inline int dev_read_alias_highest_id(const char *stem)
1031 if (!CONFIG_IS_ENABLED(OF_LIBFDT) || !gd->fdt_blob)
1033 return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
1036 static inline int dev_get_child_count(const struct udevice *dev)
1038 return ofnode_get_child_count(dev_ofnode(dev));
1041 static inline int dev_decode_display_timing(const struct udevice *dev,
1043 struct display_timing *config)
1045 return ofnode_decode_display_timing(dev_ofnode(dev), index, config);
1048 #endif /* CONFIG_DM_DEV_READ_INLINE */
1051 * dev_for_each_subnode() - Helper function to iterate through subnodes
1053 * This creates a for() loop which works through the subnodes in a device's
1056 * @subnode: ofnode holding the current subnode
1057 * @dev: device to use for interation (struct udevice *)
1059 #define dev_for_each_subnode(subnode, dev) \
1060 for (subnode = dev_read_first_subnode(dev); \
1061 ofnode_valid(subnode); \
1062 subnode = ofnode_next_subnode(subnode))
1065 * dev_for_each_property() - Helper function to iterate through property
1067 * This creates a for() loop which works through the property in a device's
1070 * @prop: struct ofprop holding the current property
1071 * @dev: device to use for interation (struct udevice *)
1073 #define dev_for_each_property(prop, dev) \
1074 for (int ret_prop = dev_read_first_prop(dev, &prop); \
1076 ret_prop = dev_read_next_prop(&prop))