[PATCH 1/4] dt-bindings: syscon: Add syscon endian properties support

[<Sergey.Semin@baikalelectronics.ru>]

From: Serge Semin <Sergey.Semin@baikalelectronics.ru>

In accordance with the syscon-driver (drivers/mfd/syscon.c) the syscon
dts-nodes may accept endian properties of the boolean type: little-endian,
big-endian, native-endian. Lets make sure that syscon bindings json-schema
also supports them.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
---
 Documentation/devicetree/bindings/mfd/syscon.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
index 39375e4313d2..9ee404991533 100644
--- a/Documentation/devicetree/bindings/mfd/syscon.yaml
+++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
@@ -61,6 +61,11 @@ properties:
     description:
       Reference to a phandle of a hardware spinlock provider node.
 
+patternProperties:
+  "^(big|little|native)-endian$":
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Bytes order of the system controller memory space.
+
 required:
   - compatible
   - reg
@@ -81,4 +86,13 @@ examples:
         hwlocks = <&hwlock1 1>;
     };
 
+  - |
+    cpu_ctl: cpu@1F04D02C {
+      compatible = "syscon";
+      reg = <0x1F04D02C 0x004>;
+
+      little-endian;
+      reg-io-width = <4>;
+    };
+
 ...
-- 
2.25.1