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 <dm/fdtaddr.h>
13 #include <dm/ofnode.h>
14 #include <dm/uclass.h>
18 #if CONFIG_IS_ENABLED(OF_LIVE)
19 static inline const struct device_node *dev_np(const struct udevice *dev)
21 return ofnode_to_np(dev->node);
24 static inline const struct device_node *dev_np(const struct udevice *dev)
31 * dev_ofnode() - get the DT node reference associated with a udevice
33 * @dev: device to check
34 * @return reference of the the device's DT node
36 static inline ofnode dev_ofnode(const struct udevice *dev)
41 static inline bool dev_of_valid(const struct udevice *dev)
43 return ofnode_valid(dev_ofnode(dev));
46 #ifndef CONFIG_DM_DEV_READ_INLINE
49 * dev_read_u32() - read a 32-bit integer from a device's DT property
51 * @dev: device to read DT property from
52 * @propname: name of the property to read from
53 * @outp: place to put value (if found)
54 * @return 0 if OK, -ve on error
56 int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp);
59 * dev_read_u32_default() - read a 32-bit integer from a device's DT property
61 * @dev: device to read DT property from
62 * @propname: name of the property to read from
63 * @def: default value to return if the property has no value
64 * @return property value, or @def if not found
66 int dev_read_u32_default(const struct udevice *dev, const char *propname,
70 * dev_read_u32_index() - read an indexed 32-bit integer from a device's DT
73 * @dev: device to read DT property from
74 * @propname: name of the property to read from
75 * @index: index of the integer to return
76 * @outp: place to put value (if found)
77 * @return 0 if OK, -ve on error
79 int dev_read_u32_index(struct udevice *dev, const char *propname, int index,
83 * dev_read_u32_index_default() - read an indexed 32-bit integer from a device's
86 * @dev: device to read DT property from
87 * @propname: name of the property to read from
88 * @index: index of the integer to return
89 * @def: default value to return if the property has no value
90 * @return property value, or @def if not found
92 u32 dev_read_u32_index_default(struct udevice *dev, const char *propname,
96 * dev_read_s32() - read a signed 32-bit integer from a device's DT property
98 * @dev: device to read DT property from
99 * @propname: name of the property to read from
100 * @outp: place to put value (if found)
101 * @return 0 if OK, -ve on error
103 int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp);
106 * dev_read_s32_default() - read a signed 32-bit int from a device's DT property
108 * @dev: device to read DT property from
109 * @propname: name of the property to read from
110 * @def: default value to return if the property has no value
111 * @return property value, or @def if not found
113 int dev_read_s32_default(const struct udevice *dev, const char *propname,
117 * dev_read_u32u() - read a 32-bit integer from a device's DT property
119 * This version uses a standard uint type.
121 * @dev: device to read DT property from
122 * @propname: name of the property to read from
123 * @outp: place to put value (if found)
124 * @return 0 if OK, -ve on error
126 int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp);
129 * dev_read_u64() - read a 64-bit integer from a device's DT property
131 * @dev: device to read DT property from
132 * @propname: name of the property to read from
133 * @outp: place to put value (if found)
134 * @return 0 if OK, -ve on error
136 int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp);
139 * dev_read_u64_default() - read a 64-bit integer from a device's DT property
141 * @dev: device to read DT property from
142 * @propname: name of the property to read from
143 * @def: default value to return if the property has no value
144 * @return property value, or @def if not found
146 u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
150 * dev_read_string() - Read a string from a device's DT property
152 * @dev: device to read DT property from
153 * @propname: name of the property to read
154 * @return string from property value, or NULL if there is no such property
156 const char *dev_read_string(const struct udevice *dev, const char *propname);
159 * dev_read_bool() - read a boolean value from a device's DT property
161 * @dev: device to read DT property from
162 * @propname: name of property to read
163 * @return true if property is present (meaning true), false if not present
165 bool dev_read_bool(const struct udevice *dev, const char *propname);
168 * dev_read_subnode() - find a named subnode of a device
170 * @dev: device whose DT node contains the subnode
171 * @subnode_name: name of subnode to find
172 * @return reference to subnode (which can be invalid if there is no such
175 ofnode dev_read_subnode(const struct udevice *dev, const char *subbnode_name);
178 * dev_read_size() - read the size of a property
180 * @dev: device to check
181 * @propname: property to check
182 * @return size of property if present, or -EINVAL if not
184 int dev_read_size(const struct udevice *dev, const char *propname);
187 * dev_read_addr_index() - Get the indexed reg property of a device
189 * @dev: Device to read from
190 * @index: the 'reg' property can hold a list of <addr, size> pairs
191 * and @index is used to select which one is required
193 * @return address or FDT_ADDR_T_NONE if not found
195 fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index);
198 * dev_read_addr_size_index() - Get the indexed reg property of a device
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
203 * @size: place to put size value (on success)
205 * @return address or FDT_ADDR_T_NONE if not found
207 fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
211 * dev_remap_addr_index() - Get the indexed reg property of a device
212 * as a memory-mapped I/O pointer
214 * @dev: Device to read from
215 * @index: the 'reg' property can hold a list of <addr, size> pairs
216 * and @index is used to select which one is required
218 * @return pointer or NULL if not found
220 void *dev_remap_addr_index(const struct udevice *dev, int index);
223 * dev_read_addr_name() - Get the reg property of a device, indexed by name
225 * @dev: Device to read from
226 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
227 * 'reg-names' property providing named-based identification. @index
228 * indicates the value to search for in 'reg-names'.
230 * @return address or FDT_ADDR_T_NONE if not found
232 fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name);
235 * dev_read_addr_size_name() - Get the reg property of a device, indexed by name
237 * @dev: Device to read from
238 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
239 * 'reg-names' property providing named-based identification. @index
240 * indicates the value to search for in 'reg-names'.
241 * @size: place to put size value (on success)
243 * @return address or FDT_ADDR_T_NONE if not found
245 fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
249 * dev_remap_addr_name() - Get the reg property of a device, indexed by name,
250 * as a memory-mapped I/O pointer
252 * @dev: Device to read from
253 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the
254 * 'reg-names' property providing named-based identification. @index
255 * indicates the value to search for in 'reg-names'.
257 * @return pointer or NULL if not found
259 void *dev_remap_addr_name(const struct udevice *dev, const char *name);
262 * dev_read_addr() - Get the reg property of a device
264 * @dev: Device to read from
266 * @return address or FDT_ADDR_T_NONE if not found
268 fdt_addr_t dev_read_addr(const struct udevice *dev);
271 * dev_read_addr_ptr() - Get the reg property of a device
274 * @dev: Device to read from
276 * @return pointer or NULL if not found
278 void *dev_read_addr_ptr(const struct udevice *dev);
281 * dev_read_addr_pci() - Read an address and handle PCI address translation
283 * At present U-Boot does not have address translation logic for PCI in the
284 * livetree implementation (of_addr.c). This special function supports this for
285 * the flat tree implementation.
287 * This function should be removed (and code should use dev_read() instead)
290 * 1. PCI address translation is added; and either
291 * 2. everything uses livetree where PCI translation is used (which is feasible
292 * in SPL and U-Boot proper) or PCI address translation is added to
293 * fdtdec_get_addr() and friends.
295 * @dev: Device to read from
296 * @return address or FDT_ADDR_T_NONE if not found
298 fdt_addr_t dev_read_addr_pci(const struct udevice *dev);
301 * dev_remap_addr() - Get the reg property of a device as a
302 * memory-mapped I/O pointer
304 * @dev: Device to read from
306 * @return pointer or NULL if not found
308 void *dev_remap_addr(const struct udevice *dev);
311 * dev_read_addr_size() - get address and size from a device property
313 * This does no address translation. It simply reads an property that contains
314 * an address and a size value, one after the other.
316 * @dev: Device to read from
317 * @propname: property to read
318 * @sizep: place to put size value (on success)
319 * @return address value, or FDT_ADDR_T_NONE on error
321 fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *propname,
325 * dev_read_name() - get the name of a device's node
327 * @dev: Device to read from
328 * @return name of node
330 const char *dev_read_name(const struct udevice *dev);
333 * dev_read_stringlist_search() - find string in a string list and return index
335 * Note that it is possible for this function to succeed on property values
336 * that are not NUL-terminated. That's because the function will stop after
337 * finding the first occurrence of @string. This can for example happen with
338 * small-valued cell properties, such as #address-cells, when searching for
341 * @dev: device to check
342 * @propname: name of the property containing the string list
343 * @string: string to look up in the string list
346 * the index of the string in the list of strings
347 * -ENODATA if the property is not found
348 * -EINVAL on some other error
350 int dev_read_stringlist_search(const struct udevice *dev, const char *property,
354 * dev_read_string_index() - obtain an indexed string from a string list
356 * @dev: device to examine
357 * @propname: name of the property containing the string list
358 * @index: index of the string to return
359 * @out: return location for the string
362 * length of string, if found or -ve error value if not found
364 int dev_read_string_index(const struct udevice *dev, const char *propname,
365 int index, const char **outp);
368 * dev_read_string_count() - find the number of strings in a string list
370 * @dev: device to examine
371 * @propname: name of the property containing the string list
373 * number of strings in the list, or -ve error value if not found
375 int dev_read_string_count(const struct udevice *dev, const char *propname);
377 * dev_read_phandle_with_args() - Find a node pointed by phandle in a list
379 * This function is useful to parse lists of phandles and their arguments.
380 * Returns 0 on success and fills out_args, on error returns appropriate
383 * Caller is responsible to call of_node_put() on the returned out_args->np
397 * list = <&phandle1 1 2 &phandle2 3>;
400 * To get a device_node of the `node2' node you may call this:
401 * dev_read_phandle_with_args(dev, "list", "#list-cells", 0, 1, &args);
403 * @dev: device whose node containing a list
404 * @list_name: property name that contains a list
405 * @cells_name: property name that specifies phandles' arguments count
406 * @cells_count: Cell count to use if @cells_name is NULL
407 * @index: index of a phandle to parse out
408 * @out_args: optional pointer to output arguments structure (will be filled)
409 * @return 0 on success (with @out_args filled out if not NULL), -ENOENT if
410 * @list_name does not exist, -EINVAL if a phandle was not found,
411 * @cells_name could not be found, the arguments were truncated or there
412 * were too many arguments.
414 int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
415 const char *cells_name, int cell_count,
416 int index, struct ofnode_phandle_args *out_args);
419 * dev_count_phandle_with_args() - Return phandle number in a list
421 * This function is usefull to get phandle number contained in a property list.
422 * For example, this allows to allocate the right amount of memory to keep
423 * clock's reference contained into the "clocks" property.
426 * @dev: device whose node containing a list
427 * @list_name: property name that contains a list
428 * @cells_name: property name that specifies phandles' arguments count
429 * @Returns number of phandle found on success, on error returns appropriate
433 int dev_count_phandle_with_args(const struct udevice *dev,
434 const char *list_name, const char *cells_name);
437 * dev_read_addr_cells() - Get the number of address cells for a device's node
439 * This walks back up the tree to find the closest #address-cells property
440 * which controls the given node.
442 * @dev: device to check
443 * @return number of address cells this node uses
445 int dev_read_addr_cells(const struct udevice *dev);
448 * dev_read_size_cells() - Get the number of size cells for a device's node
450 * This walks back up the tree to find the closest #size-cells property
451 * which controls the given node.
453 * @dev: device to check
454 * @return number of size cells this node uses
456 int dev_read_size_cells(const struct udevice *dev);
459 * dev_read_addr_cells() - Get the address cells property in a node
461 * This function matches fdt_address_cells().
463 * @dev: device to check
464 * @return number of address cells this node uses
466 int dev_read_simple_addr_cells(const struct udevice *dev);
469 * dev_read_size_cells() - Get the size cells property in a node
471 * This function matches fdt_size_cells().
473 * @dev: device to check
474 * @return number of size cells this node uses
476 int dev_read_simple_size_cells(const struct udevice *dev);
479 * dev_read_phandle() - Get the phandle from a device
481 * @dev: device to check
482 * @return phandle (1 or greater), or 0 if no phandle or other error
484 int dev_read_phandle(const struct udevice *dev);
487 * dev_read_prop()- - read a property from a device's node
489 * @dev: device to check
490 * @propname: property to read
491 * @lenp: place to put length on success
492 * @return pointer to property, or NULL if not found
494 const void *dev_read_prop(const struct udevice *dev, const char *propname,
498 * dev_read_first_prop()- get the reference of the first property
500 * Get reference to the first property of the node, it is used to iterate
501 * and read all the property with dev_read_prop_by_prop().
503 * @dev: device to check
504 * @prop: place to put argument reference
505 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
507 int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop);
510 * ofnode_get_next_property() - get the reference of the next property
512 * Get reference to the next property of the node, it is used to iterate
513 * and read all the property with dev_read_prop_by_prop().
515 * @prop: reference of current argument and place to put reference of next one
516 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
518 int dev_read_next_prop(struct ofprop *prop);
521 * dev_read_prop_by_prop() - get a pointer to the value of a property
523 * Get value for the property identified by the provided reference.
525 * @prop: reference on property
526 * @propname: If non-NULL, place to property name on success,
527 * @lenp: If non-NULL, place to put length on success
528 * @return 0 if OK, -ve on error. -FDT_ERR_NOTFOUND if not found
530 const void *dev_read_prop_by_prop(struct ofprop *prop,
531 const char **propname, int *lenp);
534 * dev_read_alias_seq() - Get the alias sequence number of a node
536 * This works out whether a node is pointed to by an alias, and if so, the
537 * sequence number of that alias. Aliases are of the form <base><num> where
538 * <num> is the sequence number. For example spi2 would be sequence number 2.
540 * @dev: device to look up
541 * @devnump: set to the sequence number if one is found
542 * @return 0 if a sequence was found, -ve if not
544 int dev_read_alias_seq(const struct udevice *dev, int *devnump);
547 * dev_read_u32_array() - Find and read an array of 32 bit integers
549 * Search for a property in a device node and read 32-bit value(s) from
552 * The out_values is modified only if a valid u32 value can be decoded.
554 * @dev: device to look up
555 * @propname: name of the property to read
556 * @out_values: pointer to return value, modified only if return value is 0
557 * @sz: number of array elements to read
558 * @return 0 on success, -EINVAL if the property does not exist, -ENODATA if
559 * property does not have a value, and -EOVERFLOW if the property data isn't
562 int dev_read_u32_array(const struct udevice *dev, const char *propname,
563 u32 *out_values, size_t sz);
566 * dev_read_first_subnode() - find the first subnode of a device's node
568 * @dev: device to look up
569 * @return reference to the first subnode (which can be invalid if the device's
570 * node has no subnodes)
572 ofnode dev_read_first_subnode(const struct udevice *dev);
575 * ofnode_next_subnode() - find the next sibling of a subnode
577 * @node: valid reference to previous node (sibling)
578 * @return reference to the next subnode (which can be invalid if the node
579 * has no more siblings)
581 ofnode dev_read_next_subnode(ofnode node);
584 * dev_read_u8_array_ptr() - find an 8-bit array
586 * Look up a device's node property and return a pointer to its contents as a
587 * byte array of given length. The property must have at least enough data
588 * for the array (count bytes). It may have more, but this will be ignored.
589 * The data is not copied.
591 * @dev: device to look up
592 * @propname: name of property to find
593 * @sz: number of array elements
594 * @return pointer to byte array if found, or NULL if the property is not
595 * found or there is not enough data
597 const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
598 const char *propname, size_t sz);
601 * dev_read_enabled() - check whether a node is enabled
603 * This looks for a 'status' property. If this exists, then returns 1 if
604 * the status is 'ok' and 0 otherwise. If there is no status property,
605 * it returns 1 on the assumption that anything mentioned should be enabled
608 * @dev: device to examine
609 * @return integer value 0 (not enabled) or 1 (enabled)
611 int dev_read_enabled(const struct udevice *dev);
614 * dev_read_resource() - obtain an indexed resource from a device.
616 * @dev: device to examine
617 * @index index of the resource to retrieve (0 = first)
618 * @res returns the resource
619 * @return 0 if ok, negative on error
621 int dev_read_resource(const struct udevice *dev, uint index,
622 struct resource *res);
625 * dev_read_resource_byname() - obtain a named resource from a device.
627 * @dev: device to examine
628 * @name: name of the resource to retrieve
629 * @res: returns the resource
630 * @return 0 if ok, negative on error
632 int dev_read_resource_byname(const struct udevice *dev, const char *name,
633 struct resource *res);
636 * dev_translate_address() - Translate a device-tree address
638 * Translate an address from the device-tree into a CPU physical address. This
639 * function walks up the tree and applies the various bus mappings along the
642 * @dev: device giving the context in which to translate the address
643 * @in_addr: pointer to the address to translate
644 * @return the translated address; OF_BAD_ADDR on error
646 u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr);
649 * dev_translate_dma_address() - Translate a device-tree DMA address
651 * Translate a DMA address from the device-tree into a CPU physical address.
652 * This function walks up the tree and applies the various bus mappings along
655 * @dev: device giving the context in which to translate the DMA address
656 * @in_addr: pointer to the DMA address to translate
657 * @return the translated DMA address; OF_BAD_ADDR on error
659 u64 dev_translate_dma_address(const struct udevice *dev,
660 const fdt32_t *in_addr);
663 * dev_read_alias_highest_id - Get highest alias id for the given stem
664 * @stem: Alias stem to be examined
666 * The function travels the lookup table to get the highest alias id for the
668 * @return alias ID, if found, else -1
670 int dev_read_alias_highest_id(const char *stem);
673 * dev_get_child_count() - get the child count of a device
675 * @dev: device to use for interation (struct udevice *)
676 * @return the count of child subnode
678 int dev_get_child_count(const struct udevice *dev);
680 #else /* CONFIG_DM_DEV_READ_INLINE is enabled */
682 static inline int dev_read_u32(const struct udevice *dev,
683 const char *propname, u32 *outp)
685 return ofnode_read_u32(dev_ofnode(dev), propname, outp);
688 static inline int dev_read_u32_default(const struct udevice *dev,
689 const char *propname, int def)
691 return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
694 static inline int dev_read_u32_index(struct udevice *dev,
695 const char *propname, int index, u32 *outp)
697 return ofnode_read_u32_index(dev_ofnode(dev), propname, index, outp);
700 static inline u32 dev_read_u32_index_default(struct udevice *dev,
701 const char *propname, int index,
704 return ofnode_read_u32_index_default(dev_ofnode(dev), propname, index,
708 static inline int dev_read_s32(const struct udevice *dev,
709 const char *propname, s32 *outp)
711 return ofnode_read_s32(dev_ofnode(dev), propname, outp);
714 static inline int dev_read_s32_default(const struct udevice *dev,
715 const char *propname, int def)
717 return ofnode_read_s32_default(dev_ofnode(dev), propname, def);
720 static inline int dev_read_u32u(const struct udevice *dev,
721 const char *propname, uint *outp)
726 ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
734 static inline int dev_read_u64(const struct udevice *dev,
735 const char *propname, u64 *outp)
737 return ofnode_read_u64(dev_ofnode(dev), propname, outp);
740 static inline u64 dev_read_u64_default(const struct udevice *dev,
741 const char *propname, u64 def)
743 return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
746 static inline const char *dev_read_string(const struct udevice *dev,
747 const char *propname)
749 return ofnode_read_string(dev_ofnode(dev), propname);
752 static inline bool dev_read_bool(const struct udevice *dev,
753 const char *propname)
755 return ofnode_read_bool(dev_ofnode(dev), propname);
758 static inline ofnode dev_read_subnode(const struct udevice *dev,
759 const char *subbnode_name)
761 return ofnode_find_subnode(dev_ofnode(dev), subbnode_name);
764 static inline int dev_read_size(const struct udevice *dev, const char *propname)
766 return ofnode_read_size(dev_ofnode(dev), propname);
769 static inline fdt_addr_t dev_read_addr_index(const struct udevice *dev,
772 return devfdt_get_addr_index(dev, index);
775 static inline fdt_addr_t dev_read_addr_size_index(const struct udevice *dev,
779 return devfdt_get_addr_size_index(dev, index, size);
782 static inline fdt_addr_t dev_read_addr_name(const struct udevice *dev,
785 return devfdt_get_addr_name(dev, name);
788 static inline fdt_addr_t dev_read_addr_size_name(const struct udevice *dev,
792 return devfdt_get_addr_size_name(dev, name, size);
795 static inline fdt_addr_t dev_read_addr(const struct udevice *dev)
797 return devfdt_get_addr(dev);
800 static inline void *dev_read_addr_ptr(const struct udevice *dev)
802 return devfdt_get_addr_ptr(dev);
805 static inline fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
807 return devfdt_get_addr_pci(dev);
810 static inline void *dev_remap_addr(const struct udevice *dev)
812 return devfdt_remap_addr(dev);
815 static inline void *dev_remap_addr_index(const struct udevice *dev, int index)
817 return devfdt_remap_addr_index(dev, index);
820 static inline void *dev_remap_addr_name(const struct udevice *dev,
823 return devfdt_remap_addr_name(dev, name);
826 static inline fdt_addr_t dev_read_addr_size(const struct udevice *dev,
827 const char *propname,
830 return ofnode_get_addr_size(dev_ofnode(dev), propname, sizep);
833 static inline const char *dev_read_name(const struct udevice *dev)
835 return ofnode_get_name(dev_ofnode(dev));
838 static inline int dev_read_stringlist_search(const struct udevice *dev,
839 const char *propname,
842 return ofnode_stringlist_search(dev_ofnode(dev), propname, string);
845 static inline int dev_read_string_index(const struct udevice *dev,
846 const char *propname, int index,
849 return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
852 static inline int dev_read_string_count(const struct udevice *dev,
853 const char *propname)
855 return ofnode_read_string_count(dev_ofnode(dev), propname);
858 static inline int dev_read_phandle_with_args(const struct udevice *dev,
859 const char *list_name, const char *cells_name, int cell_count,
860 int index, struct ofnode_phandle_args *out_args)
862 return ofnode_parse_phandle_with_args(dev_ofnode(dev), list_name,
863 cells_name, cell_count, index,
867 static inline int dev_count_phandle_with_args(const struct udevice *dev,
868 const char *list_name, const char *cells_name)
870 return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
874 static inline int dev_read_addr_cells(const struct udevice *dev)
876 /* NOTE: this call should walk up the parent stack */
877 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev));
880 static inline int dev_read_size_cells(const struct udevice *dev)
882 /* NOTE: this call should walk up the parent stack */
883 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev));
886 static inline int dev_read_simple_addr_cells(const struct udevice *dev)
888 return fdt_address_cells(gd->fdt_blob, dev_of_offset(dev));
891 static inline int dev_read_simple_size_cells(const struct udevice *dev)
893 return fdt_size_cells(gd->fdt_blob, dev_of_offset(dev));
896 static inline int dev_read_phandle(const struct udevice *dev)
898 return fdt_get_phandle(gd->fdt_blob, dev_of_offset(dev));
901 static inline const void *dev_read_prop(const struct udevice *dev,
902 const char *propname, int *lenp)
904 return ofnode_get_property(dev_ofnode(dev), propname, lenp);
907 static inline int dev_read_first_prop(const struct udevice *dev, struct ofprop *prop)
909 return ofnode_get_first_property(dev_ofnode(dev), prop);
912 static inline int dev_read_next_prop(struct ofprop *prop)
914 return ofnode_get_next_property(prop);
917 static inline const void *dev_read_prop_by_prop(struct ofprop *prop,
918 const char **propname,
921 return ofnode_get_property_by_prop(prop, propname, lenp);
924 static inline int dev_read_alias_seq(const struct udevice *dev, int *devnump)
926 return fdtdec_get_alias_seq(gd->fdt_blob, dev->uclass->uc_drv->name,
927 dev_of_offset(dev), devnump);
930 static inline int dev_read_u32_array(const struct udevice *dev,
931 const char *propname, u32 *out_values,
934 return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
937 static inline ofnode dev_read_first_subnode(const struct udevice *dev)
939 return ofnode_first_subnode(dev_ofnode(dev));
942 static inline ofnode dev_read_next_subnode(ofnode node)
944 return ofnode_next_subnode(node);
947 static inline const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
948 const char *propname,
951 return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
954 static inline int dev_read_enabled(const struct udevice *dev)
956 return fdtdec_get_is_enabled(gd->fdt_blob, dev_of_offset(dev));
959 static inline int dev_read_resource(const struct udevice *dev, uint index,
960 struct resource *res)
962 return ofnode_read_resource(dev_ofnode(dev), index, res);
965 static inline int dev_read_resource_byname(const struct udevice *dev,
967 struct resource *res)
969 return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
972 static inline u64 dev_translate_address(const struct udevice *dev,
973 const fdt32_t *in_addr)
975 return ofnode_translate_address(dev_ofnode(dev), in_addr);
978 static inline u64 dev_translate_dma_address(const struct udevice *dev,
979 const fdt32_t *in_addr)
981 return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
984 static inline int dev_read_alias_highest_id(const char *stem)
986 if (!CONFIG_IS_ENABLED(OF_LIBFDT))
988 return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
991 static inline int dev_get_child_count(const struct udevice *dev)
993 return ofnode_get_child_count(dev_ofnode(dev));
996 #endif /* CONFIG_DM_DEV_READ_INLINE */
999 * dev_for_each_subnode() - Helper function to iterate through subnodes
1001 * This creates a for() loop which works through the subnodes in a device's
1004 * @subnode: ofnode holding the current subnode
1005 * @dev: device to use for interation (struct udevice *)
1007 #define dev_for_each_subnode(subnode, dev) \
1008 for (subnode = dev_read_first_subnode(dev); \
1009 ofnode_valid(subnode); \
1010 subnode = ofnode_next_subnode(subnode))
1013 * dev_for_each_property() - Helper function to iterate through property
1015 * This creates a for() loop which works through the property in a device's
1018 * @prop: struct ofprop holding the current property
1019 * @dev: device to use for interation (struct udevice *)
1021 #define dev_for_each_property(prop, dev) \
1022 for (int ret_prop = dev_read_first_prop(dev, &prop); \
1024 ret_prop = dev_read_next_prop(&prop))