[PATCH v4 04/20] dt-bindings: qcom-bam: Convert binding to YAML

[Bhupesh Sharma <bhupesh.sharma@linaro.org>]

Convert Qualcomm BAM DMA devicetree binding to YAML.

Cc: Thara Gopinath <thara.gopinath@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 .../devicetree/bindings/dma/qcom_bam_dma.txt  | 50 -----------
 .../devicetree/bindings/dma/qcom_bam_dma.yaml | 89 +++++++++++++++++++
 2 files changed, 89 insertions(+), 50 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
 create mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml

diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
deleted file mode 100644
index cf5b9e44432c..000000000000
--- a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-QCOM BAM DMA controller
-
-Required properties:
-- compatible: must be one of the following:
- * "qcom,bam-v1.4.0" for MSM8974, APQ8074 and APQ8084
- * "qcom,bam-v1.3.0" for APQ8064, IPQ8064 and MSM8960
- * "qcom,bam-v1.7.0" for MSM8916
-- reg: Address range for DMA registers
-- interrupts: Should contain the one interrupt shared by all channels
-- #dma-cells: must be <1>, the cell in the dmas property of the client device
-  represents the channel number
-- clocks: required clock
-- clock-names: must contain "bam_clk" entry
-- qcom,ee : indicates the active Execution Environment identifier (0-7) used in
-  the secure world.
-- qcom,controlled-remotely : optional, indicates that the bam is controlled by
-  remote proccessor i.e. execution environment.
-- num-channels : optional, indicates supported number of DMA channels in a
-  remotely controlled bam.
-- qcom,num-ees : optional, indicates supported number of Execution Environments
-  in a remotely controlled bam.
-
-Example:
-
-	uart-bam: dma@f9984000 = {
-		compatible = "qcom,bam-v1.4.0";
-		reg = <0xf9984000 0x15000>;
-		interrupts = <0 94 0>;
-		clocks = <&gcc GCC_BAM_DMA_AHB_CLK>;
-		clock-names = "bam_clk";
-		#dma-cells = <1>;
-		qcom,ee = <0>;
-	};
-
-DMA clients must use the format described in the dma.txt file, using a two cell
-specifier for each channel.
-
-Example:
-	serial@f991e000 {
-		compatible = "qcom,msm-uart";
-		reg = <0xf991e000 0x1000>
-			<0xf9944000 0x19000>;
-		interrupts = <0 108 0>;
-		clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>,
-			<&gcc GCC_BLSP1_AHB_CLK>;
-		clock-names = "core", "iface";
-
-		dmas = <&uart-bam 0>, <&uart-bam 1>;
-		dma-names = "rx", "tx";
-	};
diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml b/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
new file mode 100644
index 000000000000..32b47e3b7769
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/qcom_bam_dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QCOM BAM DMA controller binding
+
+maintainers:
+  - Bhupesh Sharma <bhupesh.sharma@linaro.org>
+
+description: |
+  This document defines the binding for the BAM DMA controller
+  found on Qualcomm parts.
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - qcom,bam-v1.4.0 # for MSM8974, APQ8074 and APQ8084
+      - qcom,bam-v1.3.0 # for APQ8064, IPQ8064 and MSM8960
+      - qcom,bam-v1.7.0 # for MSM8916
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: bam_clk
+
+  interrupts:
+    minItems: 1
+    maxItems: 31
+
+  num-channels:
+    maximum: 31
+    description: |
+      Indicates supported number of DMA channels in a remotely controlled bam.
+
+  "#dma-cells":
+    const: 1
+    description: The single cell represents the channel index.
+
+  qcom,ee:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Indicates the active Execution Environment identifier (0-7)
+      used in the secure world.
+
+  qcom,controlled-remotely:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Indicates that the bam is controlled by remote proccessor i.e.
+      execution environment.
+
+  qcom,num-ees:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 31
+    default: 2
+    description:
+      Indicates supported number of Execution Environments in a
+      remotely controlled bam.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#dma-cells"
+  - qcom,ee
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8974.h>
+    dma-controller@f9984000 {
+        compatible = "qcom,bam-v1.4.0";
+        reg = <0xf9984000 0x15000>;
+        interrupts = <0 94 0>;
+        clocks = <&gcc GCC_BAM_DMA_AHB_CLK>;
+        clock-names = "bam_clk";
+        #dma-cells = <1>;
+        qcom,ee = <0>;
+    };
-- 
2.31.1