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From:   Kuldeep Singh <singh.kuldeep87k@gmail.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Vinod Koul <vkoul@kernel.org>
Cc:     linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org
Subject: [PATCH v3 6/6] dt-bindings: dma: Convert Qualcomm BAM DMA binding to json format
Date:   Mon, 18 Apr 2022 02:34:36 +0530
Message-Id: <20220417210436.6203-7-singh.kuldeep87k@gmail.com>
In-Reply-To: <20220417210436.6203-1-singh.kuldeep87k@gmail.com>
References: <20220417210436.6203-1-singh.kuldeep87k@gmail.com>
MIME-Version: 1.0
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Convert Qualcomm BAM DMA controller binding to DT schema format using
json schema.

Signed-off-by: Kuldeep Singh <singh.kuldeep87k@gmail.com>
---
v3:
- Address Krzysztof Comments
- qcom,ee as required property
- Use boolean type instead of flag
- Add min/max to qcom,ee
- skip clocks, as it's users are not fixed
---
v2:
- Use dma-cells
- Set additionalProperties to false
---
 .../devicetree/bindings/dma/qcom,bam-dma.yaml | 97 +++++++++++++++++++
 .../devicetree/bindings/dma/qcom_bam_dma.txt  | 52 ----------
 2 files changed, 97 insertions(+), 52 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
 delete mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt

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..02393ec2eedd
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
@@ -0,0 +1,97 @@
+# 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: Qualcomm Technologies Inc BAM DMA controller
+
+maintainers:
+  - Andy Gross <agross@kernel.org>
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - qcom,bam-v1.3.0
+      - qcom,bam-v1.4.0
+      - qcom,bam-v1.7.0
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: bam_clk
+
+  "#dma-cells":
+    const: 1
+
+  interrupts:
+    maxItems: 1
+
+  iommus:
+    minItems: 1
+    maxItems: 4
+
+  num-channels:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Indicates supported number of DMA channels in a remotely controlled bam.
+
+  qcom,controlled-remotely:
+    type: boolean
+    description:
+      Indicates that the bam is controlled by remote proccessor i.e. execution
+      environment.
+
+  qcom,ee:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 7
+    description:
+      Indicates the active Execution Environment identifier (0-7) used in the
+      secure world.
+
+  qcom,num-ees:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Indicates supported number of Execution Environments in a remotely
+      controlled bam.
+
+  qcom,powered-remotely:
+    type: boolean
+    description:
+      Indicates that the bam is powered up by a remote processor but must be
+      initialized by the local processor.
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - "#dma-cells"
+  - interrupts
+  - qcom,ee
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,gcc-msm8974.h>
+
+    dma-controller@f9944000 {
+        compatible = "qcom,bam-v1.4.0";
+        reg = <0xf9944000 0x15000>;
+        interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&gcc GCC_BLSP2_AHB_CLK>;
+        clock-names = "bam_clk";
+        #dma-cells = <1>;
+        qcom,ee = <0>;
+    };
+...
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 6e9a5497b3f2..000000000000
--- a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt
+++ /dev/null
@@ -1,52 +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.
-- qcom,powered-remotely : optional, indicates that the bam is powered up by
-  a remote processor but must be initialized by the local processor.
-- 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";
-	};
-- 
2.25.1