1 files changed, 72 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mtd/partitions/partition.yaml b/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
index 1ebe9e2347ea..80d0452a2a33 100644
--- a/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
+++ b/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
@@ -57,6 +57,57 @@ properties:
       user space from
     type: boolean
 
+  align:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 2
+    maximum: 0x80000000
+    multipleOf: 2
+    description:
+      This sets the alignment of the entry in bytes.
+
+      The entry offset is adjusted so that the entry starts on an aligned
+      boundary within the containing section or image. For example ‘align =
+      <16>’ means that the entry will start on a 16-byte boundary. This may
+      mean that padding is added before the entry. The padding is part of
+      the containing section but is not included in the entry, meaning that
+      an empty space may be created before the entry starts. Alignment
+      must be a power of 2. If ‘align’ is not provided, no alignment is
+      performed.
+
+  align-size:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 2
+    maximum: 0x80000000
+    multipleOf: 2
+    description:
+      This sets the alignment of the entry size in bytes. It must be a power
+      of 2.
+
+      For example, to ensure that the size of an entry is a multiple of 64
+      bytes, set this to 64. While this does not affect the content of the
+      entry itself (the padding is performed only when its parent section is
+      assembled), the end result is that the entry ends with the padding
+      bytes, so may grow. If ‘align-size’ is not provided, no alignment is
+      performed.
+
+  align-end:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 2
+    maximum: 0x80000000
+    multipleOf: 2
+    description:
+      This sets the alignment (in bytes) of the end of an entry with respect
+      to the containing section. It must be a power of 2.
+
+      Some entries require that they end on an alignment boundary,
+      regardless of where they start. This does not move the start of the
+      entry, so the content of the entry will still start at the beginning.
+      But there may be padding at the end. While this does not affect the
+      content of the entry itself (the padding is performed only when its
+      parent section is assembled), the end result is that the entry ends
+      with the padding bytes, so may grow. If ‘align-end’ is not provided,
+      no alignment is performed.
+
 if:
   not:
     required: [ reg ]
@@ -67,3 +118,24 @@ then:
 
 # This is a generic file other binding inherit from and extend
 additionalProperties: true
+
+examples:
+  - |
+    partitions {
+        compatible = "fixed-partitions";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        partition@100000 {
+            compatible = "u-boot";
+            reg = <0x100000 0xf00000>;
+            align-size = <0x1000>;
+            align-end = <0x10000>;
+        };
+
+        partition@200000 {
+            compatible = "tfa-bl31";
+            reg = <0x200000 0x100000>;
+            align = <0x4000>;
+        };
+    };