dt-bindings: fsl-dma: fsl-edma: add edma3 compatible string

Extend Freescale eDMA driver bindings to support eDMA3 IP blocks in
i.MX8QM and i.MX8QXP SoCs. In i.MX93, both eDMA3 and eDMA4 are now.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20230821161617.2142561-12-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/dma/fsl,edma.yaml

@@ -21,32 +21,41 @@ properties:
       - enum:
           - fsl,vf610-edma
           - fsl,imx7ulp-edma
+          - fsl,imx8qm-adma
+          - fsl,imx8qm-edma
+          - fsl,imx93-edma3
+          - fsl,imx93-edma4
       - items:
           - const: fsl,ls1028a-edma
           - const: fsl,vf610-edma
 
   reg:
-    minItems: 2
+    minItems: 1
     maxItems: 3
 
   interrupts:
-    minItems: 2
-    maxItems: 17
+    minItems: 1
+    maxItems: 64
 
   interrupt-names:
-    minItems: 2
-    maxItems: 17
+    minItems: 1
+    maxItems: 64
 
   "#dma-cells":
-    const: 2
+    enum:
+      - 2
+      - 3
 
   dma-channels:
-    const: 32
+    minItems: 1
+    maxItems: 64
 
   clocks:
+    minItems: 1
     maxItems: 2
 
   clock-names:
+    minItems: 1
     maxItems: 2
 
   big-endian:
@@ -65,25 +74,56 @@ required:
 
 allOf:
   - $ref: dma-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx8qm-adma
+              - fsl,imx8qm-edma
+              - fsl,imx93-edma3
+              - fsl,imx93-edma4
+    then:
+      properties:
+        "#dma-cells":
+          const: 3
+        # It is not necessary to write the interrupt name for each channel.
+        # instead, you can simply maintain the sequential IRQ numbers as
+        # defined for the DMA channels.
+        interrupt-names: false
+        clock-names:
+          items:
+            - const: dma
+        clocks:
+          maxItems: 1
+
   - if:
       properties:
         compatible:
           contains:
             const: fsl,vf610-edma
     then:
       properties:
+        clocks:
+          minItems: 2
         clock-names:
           items:
             - const: dmamux0
             - const: dmamux1
         interrupts:
+          minItems: 2
           maxItems: 2
         interrupt-names:
           items:
             - const: edma-tx
             - const: edma-err
         reg:
+          minItems: 2
           maxItems: 3
+        "#dma-cells":
+          const: 2
+        dma-channels:
+          const: 32
 
   - if:
       properties:
@@ -92,14 +132,22 @@ allOf:
             const: fsl,imx7ulp-edma
     then:
       properties:
+        clock:
+          minItems: 2
         clock-names:
           items:
             - const: dma
             - const: dmamux0
         interrupts:
+          minItems: 2
           maxItems: 17
         reg:
+          minItems: 2
           maxItems: 2
+        "#dma-cells":
+          const: 2
+        dma-channels:
+          const: 32
 
 unevaluatedProperties: false
 
@@ -153,3 +201,47 @@ examples:
        clock-names = "dma", "dmamux0";
        clocks = <&pcc2 IMX7ULP_CLK_DMA1>, <&pcc2 IMX7ULP_CLK_DMA_MUX1>;
     };
+
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx93-clock.h>
+
+    dma-controller@44000000 {
+      compatible = "fsl,imx93-edma3";
+      reg = <0x44000000 0x200000>;
+      #dma-cells = <3>;
+      dma-channels = <31>;
+      interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 99 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk IMX93_CLK_EDMA1_GATE>;
+        clock-names = "dma";
+    };