linux-kernel - [PATCH v2 1/4] dt-bindings: hwlock: qcom: Migrate binding to YAML

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Date:   Mon, 22 Jun 2020 00:59:53 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Vinod Koul <vkoul@...nel.org>
Subject: [PATCH v2 1/4] dt-bindings: hwlock: qcom: Migrate binding to YAML

Migrate the Qualcomm TCSR mutex binding to YAML to allow validation.

Reviewed-by: Vinod Koul <vkoul@...nel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---

Changes since v1:
- Actually remove the old binding doc

 .../bindings/hwlock/qcom-hwspinlock.txt       | 39 --------------
 .../bindings/hwlock/qcom-hwspinlock.yaml      | 51 +++++++++++++++++++
 2 files changed, 51 insertions(+), 39 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.txt
 create mode 100644 Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml

diff --git a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.txt
deleted file mode 100644
index 4563f524556b..000000000000
--- a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-Qualcomm Hardware Mutex Block:
-
-The hardware block provides mutexes utilized between different processors on
-the SoC as part of the communication protocol used by these processors.
-
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be one of:
-		    "qcom,sfpb-mutex",
-		    "qcom,tcsr-mutex"
-
-- syscon:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: one cell containing:
-		    syscon phandle
-		    offset of the hwmutex block within the syscon
-		    stride of the hwmutex registers
-
-- #hwlock-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: must be 1, the specified cell represent the lock id
-		    (hwlock standard property, see hwlock.txt)
-
-Example:
-
-	tcsr_mutex_block: syscon@...84000 {
-		compatible = "syscon";
-		reg = <0xfd484000 0x2000>;
-	};
-
-	hwlock@...84000 {
-		compatible = "qcom,tcsr-mutex";
-		syscon = <&tcsr_mutex_block 0 0x80>;
-
-		#hwlock-cells = <1>;
-	};
diff --git a/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
new file mode 100644
index 000000000000..71e63b52edd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/qcom-hwspinlock.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwlock/qcom-hwspinlock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Hardware Mutex Block
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@...aro.org>
+
+description:
+  The hardware block provides mutexes utilized between different processors on
+  the SoC as part of the communication protocol used by these processors.
+
+properties:
+  compatible:
+    enum:
+      - qcom,sfpb-mutex
+      - qcom,tcsr-mutex
+
+  '#hwlock-cells':
+    const: 1
+
+  syscon:
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    description:
+      Should be a triple of phandle referencing the TCSR mutex syscon, offset
+      of first mutex within the syscon and stride between each mutex.
+
+required:
+  - compatible
+  - '#hwlock-cells'
+  - syscon
+
+additionalProperties: false
+
+examples:
+  - |
+        tcsr_mutex_block: syscon@...84000 {
+                compatible = "syscon";
+                reg = <0xfd484000 0x2000>;
+        };
+
+        hwlock {
+                compatible = "qcom,tcsr-mutex";
+                syscon = <&tcsr_mutex_block 0 0x80>;
+
+                #hwlock-cells = <1>;
+        };
+...
-- 
2.26.2