[PATCH v2 4/5] dt-bindings: dma: fsl-edma: add fsl,imx8ulp-edma compatible string

[Frank Li <Frank.Li@nxp.com>]

From: Joy Zou <joy.zou@nxp.com>

Introduce the compatible string 'fsl,imx8ulp-edma' to enable support for
the i.MX8ULP's eDMA, alongside adjusting the clock numbering. The i.MX8ULP
eDMA architecture features one clock for each DMA channel and an additional
clock for the core controller. Given a maximum of 32 DMA channels, the
maximum clock number consequently increases to 33.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 .../devicetree/bindings/dma/fsl,edma.yaml          | 26 ++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
index aa51d278cb67b..55cce79c759f8 100644
--- a/Documentation/devicetree/bindings/dma/fsl,edma.yaml
+++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
@@ -23,6 +23,7 @@ properties:
           - fsl,imx7ulp-edma
           - fsl,imx8qm-adma
           - fsl,imx8qm-edma
+          - fsl,imx8ulp-edma
           - fsl,imx93-edma3
           - fsl,imx93-edma4
           - fsl,imx95-edma5
@@ -53,11 +54,11 @@ properties:
 
   clocks:
     minItems: 1
-    maxItems: 2
+    maxItems: 33
 
   clock-names:
     minItems: 1
-    maxItems: 2
+    maxItems: 33
 
   big-endian:
     description: |
@@ -108,6 +109,7 @@ allOf:
       properties:
         clocks:
           minItems: 2
+          maxItems: 2
         clock-names:
           items:
             - const: dmamux0
@@ -136,6 +138,7 @@ allOf:
       properties:
         clock:
           minItems: 2
+          maxItems: 2
         clock-names:
           items:
             - const: dma
@@ -151,6 +154,25 @@ allOf:
         dma-channels:
           const: 32
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx8ulp-edma
+    then:
+      properties:
+        clock:
+          maxItems: 33
+        clock-names:
+          items:
+            - const: dma
+            - pattern: "^CH[0-31]-clk$"
+        interrupt-names: false
+        interrupts:
+          maxItems: 32
+        "#dma-cells":
+          const: 3
+
 unevaluatedProperties: false
 
 examples:

-- 
2.34.1