Merge git://git.denx.de/u-boot-usb

[oweals/u-boot.git] / include / fdt_support.h

diff --git a/include/fdt_support.h b/include/fdt_support.h
index 76ef5b70d785c6b00201bace3d037b7f2e2306d6..cefb2b2cce2396efa390a8e0f2c84b1a35b4e19e 100644 (file)
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2007
  * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef __FDT_SUPPORT_H
@@ -206,16 +205,45 @@ int fdt_increase_size(void *fdt, int add_len);
 
 int fdt_fixup_nor_flash_size(void *blob);
 
+struct node_info;
 #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
-void fdt_fixup_mtdparts(void *fdt, void *node_info, int node_info_size);
+void fdt_fixup_mtdparts(void *fdt, const struct node_info *node_info,
+                       int node_info_size);
 #else
-static inline void fdt_fixup_mtdparts(void *fdt, void *node_info,
-                                       int node_info_size) {}
+static inline void fdt_fixup_mtdparts(void *fdt,
+                                     const struct node_info *node_info,
+                                     int node_info_size)
+{
+}
 #endif
 
 void fdt_del_node_and_alias(void *blob, const char *alias);
+
+/**
+ * Translate an address from the DT into a CPU physical address
+ *
+ * The translation relies on the "ranges" property.
+ *
+ * @param blob         Pointer to device tree blob
+ * @param node_offset  Node DT offset
+ * @param in_addr      Pointer to the address to translate
+ * @return translated address or OF_BAD_ADDR on error
+ */
 u64 fdt_translate_address(const void *blob, int node_offset,
                          const __be32 *in_addr);
+/**
+ * Translate a DMA address from the DT into a CPU physical address
+ *
+ * The translation relies on the "dma-ranges" property.
+ *
+ * @param blob         Pointer to device tree blob
+ * @param node_offset  Node DT offset
+ * @param in_addr      Pointer to the DMA address to translate
+ * @return translated DMA address or OF_BAD_ADDR on error
+ */
+u64 fdt_translate_dma_address(const void *blob, int node_offset,
+                             const __be32 *in_addr);
+
 int fdt_node_offset_by_compat_reg(void *blob, const char *compat,
                                        phys_addr_t compat_off);
 int fdt_alloc_phandle(void *blob);
@@ -284,6 +312,16 @@ int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width,
 
 int fdt_overlay_apply_verbose(void *fdt, void *fdto);
 
+/**
+ * fdt_get_cells_len() - Get the length of a type of cell in top-level nodes
+ *
+ * Returns the length of the cell type in bytes (4 or 8).
+ *
+ * @blob: Pointer to device tree blob
+ * @nr_cells_name: Name to lookup, e.g. "#address-cells"
+ */
+int fdt_get_cells_len(const void *blob, char *nr_cells_name);
+
 #endif /* ifdef CONFIG_OF_LIBFDT */
 
 #ifdef USE_HOSTCC