linux-kernel - [RFC 1/5] dt-bindings: hwlock: Add Realtek RTD1195 SB2

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Date:   Mon,  2 Dec 2019 23:05:31 +0100
From:   Andreas Färber <afaerber@...e.de>
To:     linux-realtek-soc@...ts.infradead.org
Cc:     Cheng-Yu Lee <cylee12@...ltek.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Andreas Färber <afaerber@...e.de>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org
Subject: [RFC 1/5] dt-bindings: hwlock: Add Realtek RTD1195 SB2

Define a binding for Realtek RTD1195 SoC's SB2 hardware semaphore.

Signed-off-by: Andreas Färber <afaerber@...e.de>
---
 .../bindings/hwlock/realtek,rtd1195-sb2-sem.yaml   | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwlock/realtek,rtd1195-sb2-sem.yaml

diff --git a/Documentation/devicetree/bindings/hwlock/realtek,rtd1195-sb2-sem.yaml b/Documentation/devicetree/bindings/hwlock/realtek,rtd1195-sb2-sem.yaml
new file mode 100644
index 000000000000..8035af02c667
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/realtek,rtd1195-sb2-sem.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwlock/realtek,rtd1195-sb2-sem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek RTD1195 SB2 hardware semaphore device tree binding
+
+maintainers:
+  - Andreas Färber <afaerber@...e.de>
+
+properties:
+  compatible:
+    const: realtek,rtd1195-sb2-sem
+
+  reg:
+    maxItems: 1
+
+  "#hwlock-cells":
+    enum: [ 0, 1 ]
+
+required:
+  - compatible
+  - reg
+  - "#hwlock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    hwspinlock@...1a000 {
+      compatible = "realtek,rtd1195-sb2-sem";
+      reg = <0x9801a000 0x4>;
+      #hwlock-cells = <0>;
+    };
+  - |
+    hwspinlock@...1a620 {
+      compatible = "realtek,rtd1195-sb2-sem";
+      reg = <0x9801a620 0x20>;
+      #hwlock-cells = <1>;
+    };
+...
-- 
2.16.4