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

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Date:   Fri, 6 Mar 2020 16:03:38 +0300
From:   <Sergey.Semin@...kalelectronics.ru>
To:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/4] dt-bindings: syscon: Add syscon endian properties support

From: Serge Semin <Sergey.Semin@...kalelectronics.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@...kalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Paul Burton <paulburton@...nel.org>
Cc: Ralf Baechle <ralf@...ux-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@...4D02C {
+      compatible = "syscon";
+      reg = <0x1F04D02C 0x004>;
+
+      little-endian;
+      reg-io-width = <4>;
+    };
+
 ...
-- 
2.25.1