1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2017 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
10 #include <fdt_support.h>
13 #include <linux/libfdt.h>
14 #include <dm/of_access.h>
15 #include <dm/of_addr.h>
16 #include <dm/ofnode.h>
17 #include <linux/err.h>
18 #include <linux/ioport.h>
19 #include <asm/global_data.h>
21 bool ofnode_name_eq(ofnode node, const char *name)
23 const char *node_name;
26 assert(ofnode_valid(node));
28 node_name = ofnode_get_name(node);
29 len = strchrnul(node_name, '@') - node_name;
31 return (strlen(name) == len) && !strncmp(node_name, name, len);
34 int ofnode_read_u8(ofnode node, const char *propname, u8 *outp)
39 assert(ofnode_valid(node));
40 debug("%s: %s: ", __func__, propname);
42 if (ofnode_is_np(node))
43 return of_read_u8(ofnode_to_np(node), propname, outp);
45 cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
47 if (!cell || len < sizeof(*cell)) {
48 debug("(not found)\n");
52 debug("%#x (%d)\n", *outp, *outp);
57 u8 ofnode_read_u8_default(ofnode node, const char *propname, u8 def)
59 assert(ofnode_valid(node));
60 ofnode_read_u8(node, propname, &def);
65 int ofnode_read_u16(ofnode node, const char *propname, u16 *outp)
70 assert(ofnode_valid(node));
71 debug("%s: %s: ", __func__, propname);
73 if (ofnode_is_np(node))
74 return of_read_u16(ofnode_to_np(node), propname, outp);
76 cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
78 if (!cell || len < sizeof(*cell)) {
79 debug("(not found)\n");
82 *outp = be16_to_cpup(cell);
83 debug("%#x (%d)\n", *outp, *outp);
88 u16 ofnode_read_u16_default(ofnode node, const char *propname, u16 def)
90 assert(ofnode_valid(node));
91 ofnode_read_u16(node, propname, &def);
96 int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
98 return ofnode_read_u32_index(node, propname, 0, outp);
101 u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def)
103 assert(ofnode_valid(node));
104 ofnode_read_u32_index(node, propname, 0, &def);
109 int ofnode_read_u32_index(ofnode node, const char *propname, int index,
115 assert(ofnode_valid(node));
116 debug("%s: %s: ", __func__, propname);
118 if (ofnode_is_np(node))
119 return of_read_u32_index(ofnode_to_np(node), propname, index,
122 cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node),
125 debug("(not found)\n");
129 if (len < (sizeof(int) * (index + 1))) {
130 debug("(not large enough)\n");
134 *outp = fdt32_to_cpu(cell[index]);
135 debug("%#x (%d)\n", *outp, *outp);
140 u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index,
143 assert(ofnode_valid(node));
144 ofnode_read_u32_index(node, propname, index, &def);
149 int ofnode_read_s32_default(ofnode node, const char *propname, s32 def)
151 assert(ofnode_valid(node));
152 ofnode_read_u32(node, propname, (u32 *)&def);
157 int ofnode_read_u64(ofnode node, const char *propname, u64 *outp)
159 const unaligned_fdt64_t *cell;
162 assert(ofnode_valid(node));
163 debug("%s: %s: ", __func__, propname);
165 if (ofnode_is_np(node))
166 return of_read_u64(ofnode_to_np(node), propname, outp);
168 cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node),
170 if (!cell || len < sizeof(*cell)) {
171 debug("(not found)\n");
174 *outp = fdt64_to_cpu(cell[0]);
175 debug("%#llx (%lld)\n", (unsigned long long)*outp,
176 (unsigned long long)*outp);
181 u64 ofnode_read_u64_default(ofnode node, const char *propname, u64 def)
183 assert(ofnode_valid(node));
184 ofnode_read_u64(node, propname, &def);
189 bool ofnode_read_bool(ofnode node, const char *propname)
193 assert(ofnode_valid(node));
194 debug("%s: %s: ", __func__, propname);
196 prop = ofnode_get_property(node, propname, NULL);
198 debug("%s\n", prop ? "true" : "false");
200 return prop ? true : false;
203 const void *ofnode_read_prop(ofnode node, const char *propname, int *sizep)
205 const char *val = NULL;
208 assert(ofnode_valid(node));
209 debug("%s: %s: ", __func__, propname);
211 if (ofnode_is_np(node)) {
212 struct property *prop = of_find_property(
213 ofnode_to_np(node), propname, &len);
220 val = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node),
224 debug("<not found>\n");
226 *sizep = -FDT_ERR_NOTFOUND;
235 const char *ofnode_read_string(ofnode node, const char *propname)
240 str = ofnode_read_prop(node, propname, &len);
244 if (strnlen(str, len) >= len) {
245 debug("<invalid>\n");
253 int ofnode_read_size(ofnode node, const char *propname)
257 if (!ofnode_read_prop(node, propname, &len))
263 ofnode ofnode_find_subnode(ofnode node, const char *subnode_name)
267 assert(ofnode_valid(node));
268 debug("%s: %s: ", __func__, subnode_name);
270 if (ofnode_is_np(node)) {
271 struct device_node *np = ofnode_to_np(node);
273 for (np = np->child; np; np = np->sibling) {
274 if (!strcmp(subnode_name, np->name))
277 subnode = np_to_ofnode(np);
279 int ooffset = fdt_subnode_offset(ofnode_to_fdt(node),
280 ofnode_to_offset(node), subnode_name);
281 subnode = noffset_to_ofnode(node, ooffset);
283 debug("%s\n", ofnode_valid(subnode) ?
284 ofnode_get_name(subnode) : "<none>");
289 int ofnode_read_u32_array(ofnode node, const char *propname,
290 u32 *out_values, size_t sz)
292 assert(ofnode_valid(node));
293 debug("%s: %s: ", __func__, propname);
295 if (ofnode_is_np(node)) {
296 return of_read_u32_array(ofnode_to_np(node), propname,
301 ret = fdtdec_get_int_array(ofnode_to_fdt(node),
302 ofnode_to_offset(node), propname,
305 /* get the error right, but space is more important in SPL */
306 if (!IS_ENABLED(CONFIG_SPL_BUILD)) {
307 if (ret == -FDT_ERR_NOTFOUND)
309 else if (ret == -FDT_ERR_BADLAYOUT)
316 #if !CONFIG_IS_ENABLED(DM_INLINE_OFNODE)
317 bool ofnode_is_enabled(ofnode node)
319 if (ofnode_is_np(node)) {
320 return of_device_is_available(ofnode_to_np(node));
322 return fdtdec_get_is_enabled(ofnode_to_fdt(node),
323 ofnode_to_offset(node));
327 ofnode ofnode_first_subnode(ofnode node)
329 assert(ofnode_valid(node));
330 if (ofnode_is_np(node))
331 return np_to_ofnode(node.np->child);
333 return noffset_to_ofnode(node,
334 fdt_first_subnode(ofnode_to_fdt(node), ofnode_to_offset(node)));
337 ofnode ofnode_next_subnode(ofnode node)
339 assert(ofnode_valid(node));
340 if (ofnode_is_np(node))
341 return np_to_ofnode(node.np->sibling);
343 return noffset_to_ofnode(node,
344 fdt_next_subnode(ofnode_to_fdt(node), ofnode_to_offset(node)));
346 #endif /* !DM_INLINE_OFNODE */
348 ofnode ofnode_get_parent(ofnode node)
352 assert(ofnode_valid(node));
353 if (ofnode_is_np(node))
354 parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
356 parent.of_offset = fdt_parent_offset(ofnode_to_fdt(node),
357 ofnode_to_offset(node));
362 const char *ofnode_get_name(ofnode node)
364 if (!ofnode_valid(node)) {
365 debug("%s node not valid\n", __func__);
369 if (ofnode_is_np(node))
370 return node.np->name;
372 return fdt_get_name(ofnode_to_fdt(node), ofnode_to_offset(node), NULL);
375 int ofnode_get_path(ofnode node, char *buf, int buflen)
377 assert(ofnode_valid(node));
379 if (ofnode_is_np(node)) {
380 if (strlen(node.np->full_name) >= buflen)
383 strcpy(buf, node.np->full_name);
389 res = fdt_get_path(ofnode_to_fdt(node), ofnode_to_offset(node), buf,
393 else if (res == -FDT_ERR_NOSPACE)
400 ofnode ofnode_get_by_phandle(uint phandle)
404 if (of_live_active())
405 node = np_to_ofnode(of_find_node_by_phandle(NULL, phandle));
407 node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob,
413 ofnode oftree_get_by_phandle(oftree tree, uint phandle)
417 if (of_live_active())
418 node = np_to_ofnode(of_find_node_by_phandle(tree.np, phandle));
421 fdt_node_offset_by_phandle(oftree_lookup_fdt(tree),
427 static fdt_addr_t __ofnode_get_addr_size_index(ofnode node, int index,
428 fdt_size_t *size, bool translate)
433 *size = FDT_SIZE_T_NONE;
435 if (ofnode_is_np(node)) {
436 const __be32 *prop_val;
440 prop_val = of_get_address(ofnode_to_np(node), index, &size64,
443 return FDT_ADDR_T_NONE;
448 ns = of_n_size_cells(ofnode_to_np(node));
450 if (translate && IS_ENABLED(CONFIG_OF_TRANSLATE) && ns > 0) {
451 return of_translate_address(ofnode_to_np(node), prop_val);
453 na = of_n_addr_cells(ofnode_to_np(node));
454 return of_read_number(prop_val, na);
457 na = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
458 ns = ofnode_read_simple_size_cells(ofnode_get_parent(node));
459 return fdtdec_get_addr_size_fixed(ofnode_to_fdt(node),
460 ofnode_to_offset(node), "reg",
466 fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size)
468 return __ofnode_get_addr_size_index(node, index, size, true);
471 fdt_addr_t ofnode_get_addr_size_index_notrans(ofnode node, int index,
474 return __ofnode_get_addr_size_index(node, index, size, false);
477 fdt_addr_t ofnode_get_addr_index(ofnode node, int index)
481 return ofnode_get_addr_size_index(node, index, &size);
484 fdt_addr_t ofnode_get_addr(ofnode node)
486 return ofnode_get_addr_index(node, 0);
489 fdt_size_t ofnode_get_size(ofnode node)
493 ofnode_get_addr_size_index(node, 0, &size);
498 int ofnode_stringlist_search(ofnode node, const char *property,
501 if (ofnode_is_np(node)) {
502 return of_property_match_string(ofnode_to_np(node),
507 ret = fdt_stringlist_search(ofnode_to_fdt(node),
508 ofnode_to_offset(node), property,
510 if (ret == -FDT_ERR_NOTFOUND)
519 int ofnode_read_string_index(ofnode node, const char *property, int index,
522 if (ofnode_is_np(node)) {
523 return of_property_read_string_index(ofnode_to_np(node),
524 property, index, outp);
528 *outp = fdt_stringlist_get(ofnode_to_fdt(node),
529 ofnode_to_offset(node),
530 property, index, &len);
537 int ofnode_read_string_count(ofnode node, const char *property)
539 if (ofnode_is_np(node)) {
540 return of_property_count_strings(ofnode_to_np(node), property);
542 return fdt_stringlist_count(ofnode_to_fdt(node),
543 ofnode_to_offset(node), property);
547 int ofnode_read_string_list(ofnode node, const char *property,
555 count = ofnode_read_string_count(node, property);
561 prop = calloc(count + 1, sizeof(char *));
565 for (i = 0; i < count; i++)
566 ofnode_read_string_index(node, property, i, &prop[i]);
573 static void ofnode_from_fdtdec_phandle_args(struct fdtdec_phandle_args *in,
574 struct ofnode_phandle_args *out)
576 assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
577 out->node = offset_to_ofnode(in->node);
578 out->args_count = in->args_count;
579 memcpy(out->args, in->args, sizeof(out->args));
582 static void ofnode_from_of_phandle_args(struct of_phandle_args *in,
583 struct ofnode_phandle_args *out)
585 assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
586 out->node = np_to_ofnode(in->np);
587 out->args_count = in->args_count;
588 memcpy(out->args, in->args, sizeof(out->args));
591 int ofnode_parse_phandle_with_args(ofnode node, const char *list_name,
592 const char *cells_name, int cell_count,
594 struct ofnode_phandle_args *out_args)
596 if (ofnode_is_np(node)) {
597 struct of_phandle_args args;
600 ret = of_parse_phandle_with_args(ofnode_to_np(node),
601 list_name, cells_name,
606 ofnode_from_of_phandle_args(&args, out_args);
608 struct fdtdec_phandle_args args;
611 ret = fdtdec_parse_phandle_with_args(ofnode_to_fdt(node),
612 ofnode_to_offset(node),
613 list_name, cells_name,
614 cell_count, index, &args);
617 ofnode_from_fdtdec_phandle_args(&args, out_args);
623 int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
624 const char *cells_name, int cell_count)
626 if (ofnode_is_np(node))
627 return of_count_phandle_with_args(ofnode_to_np(node),
628 list_name, cells_name, cell_count);
630 return fdtdec_parse_phandle_with_args(ofnode_to_fdt(node),
631 ofnode_to_offset(node), list_name, cells_name,
632 cell_count, -1, NULL);
635 ofnode ofnode_path(const char *path)
637 if (of_live_active())
638 return np_to_ofnode(of_find_node_by_path(path));
640 return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
643 ofnode ofnode_path_root(oftree tree, const char *path)
645 if (of_live_active())
646 return np_to_ofnode(of_find_node_opts_by_path(tree.np, path,
648 else if (*path != '/' && tree.fdt != gd->fdt_blob)
649 return ofnode_null(); /* Aliases only on control FDT */
651 return offset_to_ofnode(fdt_path_offset(tree.fdt, path));
654 const void *ofnode_read_chosen_prop(const char *propname, int *sizep)
658 chosen_node = ofnode_path("/chosen");
660 return ofnode_read_prop(chosen_node, propname, sizep);
663 const char *ofnode_read_chosen_string(const char *propname)
665 return ofnode_read_chosen_prop(propname, NULL);
668 ofnode ofnode_get_chosen_node(const char *name)
672 prop = ofnode_read_chosen_prop(name, NULL);
674 return ofnode_null();
676 return ofnode_path(prop);
679 const void *ofnode_read_aliases_prop(const char *propname, int *sizep)
683 node = ofnode_path("/aliases");
685 return ofnode_read_prop(node, propname, sizep);
688 ofnode ofnode_get_aliases_node(const char *name)
692 prop = ofnode_read_aliases_prop(name, NULL);
694 return ofnode_null();
696 debug("%s: node_path: %s\n", __func__, prop);
698 return ofnode_path(prop);
701 int ofnode_get_child_count(ofnode parent)
706 ofnode_for_each_subnode(child, parent)
712 static int decode_timing_property(ofnode node, const char *name,
713 struct timing_entry *result)
717 length = ofnode_read_size(node, name);
719 debug("%s: could not find property %s\n",
720 ofnode_get_name(node), name);
724 if (length == sizeof(u32)) {
725 result->typ = ofnode_read_u32_default(node, name, 0);
726 result->min = result->typ;
727 result->max = result->typ;
729 ret = ofnode_read_u32_array(node, name, &result->min, 3);
735 int ofnode_decode_display_timing(ofnode parent, int index,
736 struct display_timing *dt)
739 ofnode timings, node;
743 timings = ofnode_find_subnode(parent, "display-timings");
744 if (!ofnode_valid(timings))
748 ofnode_for_each_subnode(node, timings) {
753 if (!ofnode_valid(node))
756 memset(dt, 0, sizeof(*dt));
758 ret |= decode_timing_property(node, "hback-porch", &dt->hback_porch);
759 ret |= decode_timing_property(node, "hfront-porch", &dt->hfront_porch);
760 ret |= decode_timing_property(node, "hactive", &dt->hactive);
761 ret |= decode_timing_property(node, "hsync-len", &dt->hsync_len);
762 ret |= decode_timing_property(node, "vback-porch", &dt->vback_porch);
763 ret |= decode_timing_property(node, "vfront-porch", &dt->vfront_porch);
764 ret |= decode_timing_property(node, "vactive", &dt->vactive);
765 ret |= decode_timing_property(node, "vsync-len", &dt->vsync_len);
766 ret |= decode_timing_property(node, "clock-frequency", &dt->pixelclock);
769 val = ofnode_read_u32_default(node, "vsync-active", -1);
771 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
772 DISPLAY_FLAGS_VSYNC_LOW;
774 val = ofnode_read_u32_default(node, "hsync-active", -1);
776 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
777 DISPLAY_FLAGS_HSYNC_LOW;
779 val = ofnode_read_u32_default(node, "de-active", -1);
781 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
782 DISPLAY_FLAGS_DE_LOW;
784 val = ofnode_read_u32_default(node, "pixelclk-active", -1);
786 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
787 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
790 if (ofnode_read_bool(node, "interlaced"))
791 dt->flags |= DISPLAY_FLAGS_INTERLACED;
792 if (ofnode_read_bool(node, "doublescan"))
793 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
794 if (ofnode_read_bool(node, "doubleclk"))
795 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
800 const void *ofnode_get_property(ofnode node, const char *propname, int *lenp)
802 if (ofnode_is_np(node))
803 return of_get_property(ofnode_to_np(node), propname, lenp);
805 return fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node),
809 int ofnode_first_property(ofnode node, struct ofprop *prop)
813 if (ofnode_is_np(node)) {
814 prop->prop = of_get_first_property(ofnode_to_np(prop->node));
816 return -FDT_ERR_NOTFOUND;
819 fdt_first_property_offset(ofnode_to_fdt(node),
820 ofnode_to_offset(prop->node));
821 if (prop->offset < 0)
828 int ofnode_next_property(struct ofprop *prop)
830 if (ofnode_is_np(prop->node)) {
831 prop->prop = of_get_next_property(ofnode_to_np(prop->node),
834 return -FDT_ERR_NOTFOUND;
837 fdt_next_property_offset(ofnode_to_fdt(prop->node),
839 if (prop->offset < 0)
846 const void *ofprop_get_property(const struct ofprop *prop,
847 const char **propname, int *lenp)
849 if (ofnode_is_np(prop->node))
850 return of_get_property_by_prop(ofnode_to_np(prop->node),
851 prop->prop, propname, lenp);
853 return fdt_getprop_by_offset(ofnode_to_fdt(prop->node),
858 fdt_addr_t ofnode_get_addr_size(ofnode node, const char *property,
861 if (ofnode_is_np(node)) {
864 const struct device_node *np = ofnode_to_np(node);
865 const __be32 *prop = of_get_property(np, property, &psize);
868 return FDT_ADDR_T_NONE;
869 na = of_n_addr_cells(np);
870 ns = of_n_size_cells(np);
871 *sizep = of_read_number(prop + na, ns);
873 if (CONFIG_IS_ENABLED(OF_TRANSLATE) && ns > 0)
874 return of_translate_address(np, prop);
876 return of_read_number(prop, na);
878 return fdtdec_get_addr_size(ofnode_to_fdt(node),
879 ofnode_to_offset(node), property,
884 const uint8_t *ofnode_read_u8_array_ptr(ofnode node, const char *propname,
887 if (ofnode_is_np(node)) {
888 const struct device_node *np = ofnode_to_np(node);
890 const __be32 *prop = of_get_property(np, propname, &psize);
892 if (!prop || sz != psize)
894 return (uint8_t *)prop;
897 return fdtdec_locate_byte_array(ofnode_to_fdt(node),
898 ofnode_to_offset(node), propname, sz);
902 int ofnode_read_pci_addr(ofnode node, enum fdt_pci_space type,
903 const char *propname, struct fdt_pci_addr *addr)
909 debug("%s: %s: ", __func__, propname);
912 * If we follow the pci bus bindings strictly, we should check
913 * the value of the node's parent node's #address-cells and
914 * #size-cells. They need to be 3 and 2 accordingly. However,
915 * for simplicity we skip the check here.
917 cell = ofnode_get_property(node, propname, &len);
921 if ((len % FDT_PCI_REG_SIZE) == 0) {
922 int num = len / FDT_PCI_REG_SIZE;
925 for (i = 0; i < num; i++) {
926 debug("pci address #%d: %08lx %08lx %08lx\n", i,
927 (ulong)fdt32_to_cpu(cell[0]),
928 (ulong)fdt32_to_cpu(cell[1]),
929 (ulong)fdt32_to_cpu(cell[2]));
930 if ((fdt32_to_cpu(*cell) & type) == type) {
931 addr->phys_hi = fdt32_to_cpu(cell[0]);
932 addr->phys_mid = fdt32_to_cpu(cell[1]);
933 addr->phys_lo = fdt32_to_cpu(cell[2]);
937 cell += (FDT_PCI_ADDR_CELLS +
952 debug("(not found)\n");
956 int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device)
958 const char *list, *end;
961 list = ofnode_get_property(node, "compatible", &len);
968 if (len >= strlen("pciVVVV,DDDD")) {
969 char *s = strstr(list, "pci");
972 * check if the string is something like pciVVVV,DDDD.RR
973 * or just pciVVVV,DDDD
975 if (s && s[7] == ',' &&
976 (s[12] == '.' || s[12] == 0)) {
978 *vendor = simple_strtol(s, NULL, 16);
981 *device = simple_strtol(s, NULL, 16);
992 int ofnode_read_eth_phy_id(ofnode node, u16 *vendor, u16 *device)
994 const char *list, *end;
997 list = ofnode_get_property(node, "compatible", &len);
1003 while (list < end) {
1006 if (len >= strlen("ethernet-phy-idVVVV,DDDD")) {
1007 char *s = strstr(list, "ethernet-phy-id");
1010 * check if the string is something like
1011 * ethernet-phy-idVVVV,DDDD
1013 if (s && s[19] == '.') {
1014 s += strlen("ethernet-phy-id");
1015 *vendor = simple_strtol(s, NULL, 16);
1017 *device = simple_strtol(s, NULL, 16);
1028 int ofnode_read_addr_cells(ofnode node)
1030 if (ofnode_is_np(node)) {
1031 return of_n_addr_cells(ofnode_to_np(node));
1033 int parent = fdt_parent_offset(ofnode_to_fdt(node),
1034 ofnode_to_offset(node));
1036 return fdt_address_cells(ofnode_to_fdt(node), parent);
1040 int ofnode_read_size_cells(ofnode node)
1042 if (ofnode_is_np(node)) {
1043 return of_n_size_cells(ofnode_to_np(node));
1045 int parent = fdt_parent_offset(ofnode_to_fdt(node),
1046 ofnode_to_offset(node));
1048 return fdt_size_cells(ofnode_to_fdt(node), parent);
1052 int ofnode_read_simple_addr_cells(ofnode node)
1054 if (ofnode_is_np(node))
1055 return of_simple_addr_cells(ofnode_to_np(node));
1057 return fdt_address_cells(ofnode_to_fdt(node),
1058 ofnode_to_offset(node));
1061 int ofnode_read_simple_size_cells(ofnode node)
1063 if (ofnode_is_np(node))
1064 return of_simple_size_cells(ofnode_to_np(node));
1066 return fdt_size_cells(ofnode_to_fdt(node),
1067 ofnode_to_offset(node));
1070 bool ofnode_pre_reloc(ofnode node)
1072 #if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD)
1073 /* for SPL and TPL the remaining nodes after the fdtgrep 1st pass
1074 * had property dm-pre-reloc or u-boot,dm-spl/tpl.
1075 * They are removed in final dtb (fdtgrep 2nd pass)
1079 if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
1081 if (ofnode_read_bool(node, "u-boot,dm-pre-proper"))
1085 * In regular builds individual spl and tpl handling both
1086 * count as handled pre-relocation for later second init.
1088 if (ofnode_read_bool(node, "u-boot,dm-spl") ||
1089 ofnode_read_bool(node, "u-boot,dm-tpl"))
1096 int ofnode_read_resource(ofnode node, uint index, struct resource *res)
1098 if (ofnode_is_np(node)) {
1099 return of_address_to_resource(ofnode_to_np(node), index, res);
1101 struct fdt_resource fres;
1104 ret = fdt_get_resource(ofnode_to_fdt(node),
1105 ofnode_to_offset(node),
1106 "reg", index, &fres);
1109 memset(res, '\0', sizeof(*res));
1110 res->start = fres.start;
1111 res->end = fres.end;
1117 int ofnode_read_resource_byname(ofnode node, const char *name,
1118 struct resource *res)
1122 index = ofnode_stringlist_search(node, "reg-names", name);
1126 return ofnode_read_resource(node, index, res);
1129 u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr)
1131 if (ofnode_is_np(node))
1132 return of_translate_address(ofnode_to_np(node), in_addr);
1134 return fdt_translate_address(ofnode_to_fdt(node),
1135 ofnode_to_offset(node), in_addr);
1138 u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr)
1140 if (ofnode_is_np(node))
1141 return of_translate_dma_address(ofnode_to_np(node), in_addr);
1143 return fdt_translate_dma_address(ofnode_to_fdt(node),
1144 ofnode_to_offset(node), in_addr);
1147 int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, u64 *size)
1149 if (ofnode_is_np(node))
1150 return of_get_dma_range(ofnode_to_np(node), cpu, bus, size);
1152 return fdt_get_dma_range(ofnode_to_fdt(node),
1153 ofnode_to_offset(node),
1157 int ofnode_device_is_compatible(ofnode node, const char *compat)
1159 if (ofnode_is_np(node))
1160 return of_device_is_compatible(ofnode_to_np(node), compat,
1163 return !fdt_node_check_compatible(ofnode_to_fdt(node),
1164 ofnode_to_offset(node),
1168 ofnode ofnode_by_compatible(ofnode from, const char *compat)
1170 if (of_live_active()) {
1171 return np_to_ofnode(of_find_compatible_node(
1172 (struct device_node *)ofnode_to_np(from), NULL,
1175 return noffset_to_ofnode(from,
1176 fdt_node_offset_by_compatible(ofnode_to_fdt(from),
1177 ofnode_to_offset(from), compat));
1181 ofnode ofnode_by_prop_value(ofnode from, const char *propname,
1182 const void *propval, int proplen)
1184 if (of_live_active()) {
1185 return np_to_ofnode(of_find_node_by_prop_value(
1186 (struct device_node *)ofnode_to_np(from), propname,
1189 return noffset_to_ofnode(from,
1190 fdt_node_offset_by_prop_value(ofnode_to_fdt(from),
1191 ofnode_to_offset(from), propname, propval,
1196 int ofnode_write_prop(ofnode node, const char *propname, const void *value,
1199 if (of_live_active())
1200 return of_write_prop(ofnode_to_np(node), propname, len, value);
1202 return fdt_setprop(ofnode_to_fdt(node), ofnode_to_offset(node),
1203 propname, value, len);
1208 int ofnode_write_string(ofnode node, const char *propname, const char *value)
1210 assert(ofnode_valid(node));
1212 debug("%s: %s = %s", __func__, propname, value);
1214 return ofnode_write_prop(node, propname, value, strlen(value) + 1);
1217 int ofnode_write_u32(ofnode node, const char *propname, u32 value)
1221 assert(ofnode_valid(node));
1223 log_debug("%s = %x", propname, value);
1224 val = malloc(sizeof(*val));
1227 *val = cpu_to_fdt32(value);
1229 return ofnode_write_prop(node, propname, val, sizeof(value));
1232 int ofnode_set_enabled(ofnode node, bool value)
1234 assert(ofnode_valid(node));
1237 return ofnode_write_string(node, "status", "okay");
1239 return ofnode_write_string(node, "status", "disabled");
1242 bool ofnode_conf_read_bool(const char *prop_name)
1246 node = ofnode_path("/config");
1247 if (!ofnode_valid(node))
1250 return ofnode_read_bool(node, prop_name);
1253 int ofnode_conf_read_int(const char *prop_name, int default_val)
1257 node = ofnode_path("/config");
1258 if (!ofnode_valid(node))
1261 return ofnode_read_u32_default(node, prop_name, default_val);
1264 const char *ofnode_conf_read_str(const char *prop_name)
1268 node = ofnode_path("/config");
1269 if (!ofnode_valid(node))
1272 return ofnode_read_string(node, prop_name);
1275 ofnode ofnode_get_phy_node(ofnode node)
1277 /* DT node properties that reference a PHY node */
1278 static const char * const phy_handle_str[] = {
1279 "phy-handle", "phy", "phy-device",
1281 struct ofnode_phandle_args args = {
1282 .node = ofnode_null()
1286 assert(ofnode_valid(node));
1288 for (i = 0; i < ARRAY_SIZE(phy_handle_str); i++)
1289 if (!ofnode_parse_phandle_with_args(node, phy_handle_str[i],
1296 phy_interface_t ofnode_read_phy_mode(ofnode node)
1301 assert(ofnode_valid(node));
1303 mode = ofnode_read_string(node, "phy-mode");
1305 mode = ofnode_read_string(node, "phy-connection-type");
1308 return PHY_INTERFACE_MODE_NA;
1310 for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++)
1311 if (!strcmp(mode, phy_interface_strings[i]))
1314 debug("%s: Invalid PHY interface '%s'\n", __func__, mode);
1316 return PHY_INTERFACE_MODE_NA;
1319 int ofnode_add_subnode(ofnode node, const char *name, ofnode *subnodep)
1324 assert(ofnode_valid(node));
1326 if (ofnode_is_np(node)) {
1327 struct device_node *np, *child;
1329 np = (struct device_node *)ofnode_to_np(node);
1330 ret = of_add_subnode(np, name, -1, &child);
1331 if (ret && ret != -EEXIST)
1333 subnode = np_to_ofnode(child);
1335 void *fdt = ofnode_to_fdt(node);
1336 int poffset = ofnode_to_offset(node);
1339 offset = fdt_add_subnode(fdt, poffset, name);
1340 if (offset == -FDT_ERR_EXISTS) {
1341 offset = fdt_subnode_offset(fdt, poffset, name);
1346 subnode = noffset_to_ofnode(node, offset);
1349 *subnodep = subnode;
1351 return ret; /* 0 or -EEXIST */