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From:   Robert Marko <robimarko@gmail.com>
To:     agross@kernel.org, bjorn.andersson@linaro.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, linux-arm-msm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     Robert Marko <robimarko@gmail.com>
Subject: [PATCH] dt-bindings: firmware: qcom-scm: convert to dtschema
Date:   Thu, 23 Jun 2022 20:25:42 +0200
Message-Id: <20220623182542.1116677-1-robimarko@gmail.com>
MIME-Version: 1.0
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Convert bindings for Qualcomm SCM to dtschema.

SoC compatibles that were used, but not documented were added.

Signed-off-by: Robert Marko <robimarko@gmail.com>
---
 .../devicetree/bindings/firmware/qcom,scm.txt |  57 --------
 .../bindings/firmware/qcom,scm.yaml           | 124 ++++++++++++++++++
 2 files changed, 124 insertions(+), 57 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/firmware/qcom,scm.txt
 create mode 100644 Documentation/devicetree/bindings/firmware/qcom,scm.yaml

diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.txt b/Documentation/devicetree/bindings/firmware/qcom,scm.txt
deleted file mode 100644
index 0f4e5ab26477..000000000000
--- a/Documentation/devicetree/bindings/firmware/qcom,scm.txt
+++ /dev/null
@@ -1,57 +0,0 @@
-QCOM Secure Channel Manager (SCM)
-
-Qualcomm processors include an interface to communicate to the secure firmware.
-This interface allows for clients to request different types of actions.  These
-can include CPU power up/down, HDCP requests, loading of firmware, and other
-assorted actions.
-
-Required properties:
-- compatible: must contain one of the following:
- * "qcom,scm-apq8064"
- * "qcom,scm-apq8084"
- * "qcom,scm-ipq4019"
- * "qcom,scm-ipq806x"
- * "qcom,scm-ipq8074"
- * "qcom,scm-mdm9607"
- * "qcom,scm-msm8226"
- * "qcom,scm-msm8660"
- * "qcom,scm-msm8916"
- * "qcom,scm-msm8953"
- * "qcom,scm-msm8960"
- * "qcom,scm-msm8974"
- * "qcom,scm-msm8976"
- * "qcom,scm-msm8994"
- * "qcom,scm-msm8996"
- * "qcom,scm-msm8998"
- * "qcom,scm-sc7180"
- * "qcom,scm-sc7280"
- * "qcom,scm-sdm845"
- * "qcom,scm-sdx55"
- * "qcom,scm-sm6350"
- * "qcom,scm-sm8150"
- * "qcom,scm-sm8250"
- * "qcom,scm-sm8350"
- * "qcom,scm-sm8450"
- and:
- * "qcom,scm"
-- clocks: Specifies clocks needed by the SCM interface, if any:
- * core clock required for "qcom,scm-apq8064", "qcom,scm-msm8660" and
-   "qcom,scm-msm8960"
- * core, iface and bus clocks required for "qcom,scm-apq8084",
-   "qcom,scm-msm8916", "qcom,scm-msm8953", "qcom,scm-msm8974" and "qcom,scm-msm8976"
-- clock-names: Must contain "core" for the core clock, "iface" for the interface
-  clock and "bus" for the bus clock per the requirements of the compatible.
-- qcom,dload-mode: phandle to the TCSR hardware block and offset of the
-		   download mode control register (optional)
-
-Example for MSM8916:
-
-	firmware {
-		scm {
-			compatible = "qcom,msm8916", "qcom,scm";
-			clocks = <&gcc GCC_CRYPTO_CLK> ,
-				 <&gcc GCC_CRYPTO_AXI_CLK>,
-				 <&gcc GCC_CRYPTO_AHB_CLK>;
-			clock-names = "core", "bus", "iface";
-		};
-	};
diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
new file mode 100644
index 000000000000..7dd7beb39846
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
@@ -0,0 +1,124 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/qcom,scm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QCOM Secure Channel Manager (SCM) bindings
+
+maintainers:
+  - Robert Marko <robimarko@gmail.com>
+
+description: |
+  Qualcomm processors include an interface to communicate to the secure firmware.
+  This interface allows for clients to request different types of actions.
+  These can include CPU power up/down, HDCP requests, loading of firmware, and
+  other assorted actions.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - qcom,scm-apq8064
+              - qcom,scm-apq8084
+              - qcom,scm-ipq4019
+              - qcom,scm-ipq806x
+              - qcom,scm-ipq8074
+              - qcom,scm-mdm9607
+              - qcom,scm-msm8226
+              - qcom,scm-msm8660
+              - qcom,scm-msm8916
+              - qcom,scm-msm8953
+              - qcom,scm-msm8960
+              - qcom,scm-msm8974
+              - qcom,scm-msm8976
+              - qcom,scm-msm8994
+              - qcom,scm-msm8996
+              - qcom,scm-msm8998
+              - qcom,scm-qcs404
+              - qcom,scm-sc7180
+              - qcom,scm-sc7280
+              - qcom,scm-sdm845
+              - qcom,scm-sdx55
+              - qcom,scm-sm6125
+              - qcom,scm-sm6350
+              - qcom,scm-sm8150
+              - qcom,scm-sm8250
+              - qcom,scm-sm8350
+              - qcom,scm-sm8450
+          - const: qcom,scm
+
+  clocks: true
+
+  clock-names: true
+
+  '#reset-cells':
+    const: 1
+
+  qcom,dload-mode:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description:
+      Phandle to the TCSR hardware block and offset of the download mode control register
+
+required:
+  - compatible
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,scm-apq8064
+              - qcom,scm-msm8660
+              - qcom,scm-msm8960
+    then:
+      properties:
+        clocks:
+          items:
+            - description: SCM core clock
+        clock-names:
+          items:
+            - const: core
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,scm-apq8084
+              - qcom,scm-mdm9607
+              - qcom,scm-msm8916
+              - qcom,scm-msm8953
+              - qcom,scm-msm8974
+              - qcom,scm-msm8976
+    then:
+      properties:
+        clocks:
+          items:
+            - description: SCM core clock
+            - description: SCM bus clock
+            - description: SCM interface clock
+        clock-names:
+          items:
+            - const: core
+            - const: bus
+            - const: iface
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8916.h>
+    firmware {
+      scm {
+        compatible = "qcom,scm-msm8916", "qcom,scm";
+
+        clocks = <&gcc GCC_CRYPTO_CLK>,
+                 <&gcc GCC_CRYPTO_AXI_CLK>,
+                 <&gcc GCC_CRYPTO_AHB_CLK>;
+        clock-names = "core", "bus", "iface";
+        qcom,dload-mode = <&tcsr 0x6100>;
+      };
+    };
-- 
2.36.1