Merge tag 'devicetree-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "DT Bindings:

   - Convert and add a bunch of IBM FSI related bindings

   - Add a new schema listing legacy compatibles which will (probably)
     never be documented. This will silence various checks warning about
     them.

   - Add bindings for Sierra Wireless mangOH Green SPI IoT interface,
     new Arm 2024 Cortex and Neoverse CPUs, QCom sc8180x PDC, QCom SDX75
     GPI DMA, imx8mp/imx8qxp fsl,irqsteer, and Renesas RZ/G2UL CRU and
     CSI-2 blocks

   - Convert Spreadtrum sprd-timer, FSL cpm_qe, FSL fsl,ls-scfg-msi, FSL
     q(b)man-*, FSL qoriq-mc, and img,pdc-wdt bindings to DT schema

   - Drop obsolete stericsson,abx500.txt

  DT core:

   - Update dtc to upstream version v1.7.0-93-g1df7b047fe43

   - Add support to run DT validation on DTs with applied overlays

   - Add helper for creating boolean properties in dynamic nodes and use
     that for dynamic PCI nodes

   - Clean-up early parsing of '#{address,size}-cells'"

* tag 'devicetree-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (39 commits)
  dt-bindings: timer: sprd-timer: convert to YAML
  dt-bindings: incomplete-devices: document devices without bindings
  dt-bindings: trivial-devices: document the Sierra Wireless mangOH Green SPI IoT interface
  scripts/dtc: Update to upstream version v1.7.0-93-g1df7b047fe43
  dt-bindings: soc: fsl: Add fsl,ls1028a-reset for reset syscon node
  dt-bindings: soc: fsl: cpm_qe: convert to yaml format
  dt-bindings: i2c: i2c-fsi: Convert to json-schema
  dt-bindings: fsi: Document the FSI Hub Controller
  dt-bindings: fsi: Document the AST2700 FSI controller
  dt-bindings: fsi: ast2600-fsi-master: Convert to json-schema
  dt-bindings: fsi: ibm,i2cr-fsi-master: Reference common FSI controller
  dt-bindings: fsi: Document the FSI controller common properties
  dt-bindings: fsi: Document the IBM SBEFIFO engine
  dt-bindings: fsi: p9-occ: Convert to json-schema
  dt-bindings: fsi: Document the IBM SCOM engine
  dt-bindings: fsi: fsi2spi: Document SPI controller child nodes
  dt-bindings: interrupt-controller: convert fsl,ls-scfg-msi to yaml
  dt-bindings: soc: fsl: Convert q(b)man-* to yaml format
  dt-bindings: misc: fsl,qoriq-mc: convert to yaml format
  dt-bindings: drop stale Anson Huang from maintainers
  ...

1 files changed, 64 insertions, 3 deletions

diff --git a/scripts/dtc/libfdt/libfdt.h b/scripts/dtc/libfdt/libfdt.h
index 77ccff19911e..2d409d8e829b 100644
--- a/scripts/dtc/libfdt/libfdt.h
+++ b/scripts/dtc/libfdt/libfdt.h
@@ -524,10 +524,35 @@ int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
  * level matching the given component, differentiated only by unit
  * address).
  *
+ * If the path is not absolute (i.e. does not begin with '/'), the
+ * first component is treated as an alias.  That is, the property by
+ * that name is looked up in the /aliases node, and the value of that
+ * property used in place of that first component.
+ *
+ * For example, for this small fragment
+ *
+ * / {
+ *     aliases {
+ *         i2c2 = &foo; // RHS compiles to "/soc@0/i2c@30a40000/eeprom@52"
+ *     };
+ *     soc@0 {
+ *         foo: i2c@30a40000 {
+ *             bar: eeprom@52 {
+ *             };
+ *         };
+ *     };
+ * };
+ *
+ * these would be equivalent:
+ *
+ *   /soc@0/i2c@30a40000/eeprom@52
+ *   i2c2/eeprom@52
+ *
  * returns:
  *	structure block offset of the node with the requested path (>=0), on
  *		success
- *	-FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
+ *	-FDT_ERR_BADPATH, given path does not begin with '/' and the first
+ *		component is not a valid alias
  *	-FDT_ERR_NOTFOUND, if the requested node does not exist
  *      -FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
@@ -870,6 +895,42 @@ const char *fdt_get_alias_namelen(const void *fdt,
 const char *fdt_get_alias(const void *fdt, const char *name);
 
 /**
+ * fdt_get_symbol_namelen - get symbol based on substring
+ * @fdt: pointer to the device tree blob
+ * @name: name of the symbol to look up
+ * @namelen: number of characters of name to consider
+ *
+ * Identical to fdt_get_symbol(), but only examine the first @namelen
+ * characters of @name for matching the symbol name.
+ *
+ * Return: a pointer to the expansion of the symbol named @name, if it exists,
+ *	   NULL otherwise
+ */
+#ifndef SWIG /* Not available in Python */
+const char *fdt_get_symbol_namelen(const void *fdt,
+				   const char *name, int namelen);
+#endif
+
+/**
+ * fdt_get_symbol - retrieve the path referenced by a given symbol
+ * @fdt: pointer to the device tree blob
+ * @name: name of the symbol to look up
+ *
+ * fdt_get_symbol() retrieves the value of a given symbol.  That is,
+ * the value of the property named @name in the node
+ * /__symbols__. Such a node exists only for a device tree blob that
+ * has been compiled with the -@ dtc option. Each property corresponds
+ * to a label appearing in the device tree source, with the name of
+ * the property being the label and the value being the full path of
+ * the node it is attached to.
+ *
+ * returns:
+ *	a pointer to the expansion of the symbol named 'name', if it exists
+ *	NULL, if the given symbol or the /__symbols__ node does not exist
+ */
+const char *fdt_get_symbol(const void *fdt, const char *name);
+
+/**
  * fdt_get_path - determine the full path of a node
  * @fdt: pointer to the device tree blob
  * @nodeoffset: offset of the node whose path to find
@@ -1450,7 +1511,7 @@ int fdt_nop_node(void *fdt, int nodeoffset);
  * fdt_create_with_flags() begins the process of creating a new fdt with
  * the sequential write interface.
  *
- * fdt creation process must end with fdt_finished() to produce a valid fdt.
+ * fdt creation process must end with fdt_finish() to produce a valid fdt.
  *
  * returns:
  *	0, on success
@@ -1968,7 +2029,7 @@ static inline int fdt_appendprop_cell(void *fdt, int nodeoffset,
  * address and size) to the value of the named property in the given
  * node, or creates a new property with that value if it does not
  * already exist.
- * If "name" is not specified, a default "reg" is used.
+ *
  * Cell sizes are determined by parent's #address-cells and #size-cells.
  *
  * This function may insert data into the blob, and will therefore