dt-bindings: dma: Convert fsl,elo*-dma to YAML

The devicetree bindings for Freescale DMA engines have so far existed as a text file. This patch converts them to YAML, and specifies all the compatible strings currently in use in arch/powerpc/boot/dts. Signed-off-by: J. Neuschäfer <j.ne@posteo.net> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250308-ppcyaml-dma-v4-1-20392ea81ec6@posteo.net Signed-off-by: Vinod Koul <vkoul@kernel.org>
mariux64 · Mar 10, 2025 · 1fe283e · 1fe283e
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diff --git a/Documentation/devicetree/bindings/dma/fsl,elo-dma.yaml b/Documentation/devicetree/bindings/dma/fsl,elo-dma.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/fsl,elo-dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Elo DMA Controller
+
+maintainers:
+  - J. Neuschäfer <j.ne@posteo.net>
+
+description:
+  This is a little-endian 4-channel DMA controller, used in Freescale mpc83xx
+  series chips such as mpc8315, mpc8349, mpc8379 etc.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - fsl,mpc8313-dma
+          - fsl,mpc8315-dma
+          - fsl,mpc8323-dma
+          - fsl,mpc8347-dma
+          - fsl,mpc8349-dma
+          - fsl,mpc8360-dma
+          - fsl,mpc8377-dma
+          - fsl,mpc8378-dma
+          - fsl,mpc8379-dma
+      - const: fsl,elo-dma
+
+  reg:
+    items:
+      - description:
+          DMA General Status Register, i.e. DGSR which contains status for
+          all the 4 DMA channels.
+
+  cell-index:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Controller index. 0 for controller @ 0x8100.
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  interrupts:
+    maxItems: 1
+    description: Controller interrupt.
+
+required:
+  - compatible
+  - reg
+
+patternProperties:
+  "^dma-channel@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+
+    properties:
+      compatible:
+        oneOf:
+          # native DMA channel
+          - items:
+              - enum:
+                  - fsl,mpc8315-dma-channel
+                  - fsl,mpc8323-dma-channel
+                  - fsl,mpc8347-dma-channel
+                  - fsl,mpc8349-dma-channel
+                  - fsl,mpc8360-dma-channel
+                  - fsl,mpc8377-dma-channel
+                  - fsl,mpc8378-dma-channel
+                  - fsl,mpc8379-dma-channel
+              - const: fsl,elo-dma-channel
+
+          # audio DMA channel, see fsl,ssi.yaml
+          - const: fsl,ssi-dma-channel
+
+      reg:
+        maxItems: 1
+
+      cell-index:
+        description: DMA channel index starts at 0.
+
+      interrupts:
+        maxItems: 1
+        description:
+          Per-channel interrupt. Only necessary if no controller interrupt has
+          been provided.
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    dma@82a8 {
+        compatible = "fsl,mpc8349-dma", "fsl,elo-dma";
+        reg = <0x82a8 4>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0 0x8100 0x1a4>;
+        interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
+        cell-index = <0>;
+
+        dma-channel@0 {
+            compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
+            reg = <0 0x80>;
+            cell-index = <0>;
+            interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
+        };
+
+        dma-channel@80 {
+            compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
+            reg = <0x80 0x80>;
+            cell-index = <1>;
+            interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
+        };
+
+        dma-channel@100 {
+            compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
+            reg = <0x100 0x80>;
+            cell-index = <2>;
+            interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
+        };
+
+        dma-channel@180 {
+            compatible = "fsl,mpc8349-dma-channel", "fsl,elo-dma-channel";
+            reg = <0x180 0x80>;
+            cell-index = <3>;
+            interrupts = <71 IRQ_TYPE_LEVEL_LOW>;
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/dma/fsl,elo3-dma.yaml b/Documentation/devicetree/bindings/dma/fsl,elo3-dma.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/fsl,elo3-dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Elo3 DMA Controller
+
+maintainers:
+  - J. Neuschäfer <j.ne@posteo.net>
+
+description:
+  DMA controller which has same function as EloPlus except that Elo3 has 8
+  channels while EloPlus has only 4, it is used in Freescale Txxx and Bxxx
+  series chips, such as t1040, t4240, b4860.
+
+properties:
+  compatible:
+    const: fsl,elo3-dma
+
+  reg:
+    items:
+      - description:
+          DMA General Status Registers starting from DGSR0, for channel 1~4
+      - description:
+          DMA General Status Registers starting from DGSR1, for channel 5~8
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  interrupts:
+    maxItems: 1
+
+patternProperties:
+  "^dma-channel@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+
+    properties:
+      compatible:
+        enum:
+          # native DMA channel
+          - fsl,eloplus-dma-channel
+
+          # audio DMA channel, see fsl,ssi.yaml
+          - fsl,ssi-dma-channel
+
+      reg:
+        maxItems: 1
+
+      interrupts:
+        maxItems: 1
+        description:
+          Per-channel interrupt. Only necessary if no controller interrupt has
+          been provided.
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    dma@100300 {
+        compatible = "fsl,elo3-dma";
+        reg = <0x100300 0x4>,
+              <0x100600 0x4>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0x0 0x100100 0x500>;
+
+        dma-channel@0 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x0 0x80>;
+            interrupts = <28 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@80 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x80 0x80>;
+            interrupts = <29 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@100 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x100 0x80>;
+            interrupts = <30 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@180 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x180 0x80>;
+            interrupts = <31 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@300 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x300 0x80>;
+            interrupts = <76 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@380 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x380 0x80>;
+            interrupts = <77 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@400 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x400 0x80>;
+            interrupts = <78 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+
+        dma-channel@480 {
+            compatible = "fsl,eloplus-dma-channel";
+            reg = <0x480 0x80>;
+            interrupts = <79 IRQ_TYPE_EDGE_FALLING 0 0>;
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/dma/fsl,eloplus-dma.yaml b/Documentation/devicetree/bindings/dma/fsl,eloplus-dma.yaml
@@ -0,0 +1,132 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/fsl,eloplus-dma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale EloPlus DMA Controller
+
+maintainers:
+  - J. Neuschäfer <j.ne@posteo.net>
+
+description:
+  This is a 4-channel DMA controller with extended addresses and chaining,
+  mainly used in Freescale mpc85xx/86xx, Pxxx and BSC series chips, such as
+  mpc8540, mpc8641 p4080, bsc9131 etc.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - fsl,mpc8540-dma
+              - fsl,mpc8541-dma
+              - fsl,mpc8548-dma
+              - fsl,mpc8555-dma
+              - fsl,mpc8560-dma
+              - fsl,mpc8572-dma
+              - fsl,mpc8641-dma
+          - const: fsl,eloplus-dma
+      - const: fsl,eloplus-dma
+
+  reg:
+    items:
+      - description:
+          DMA General Status Register, i.e. DGSR which contains
+          status for all the 4 DMA channels
+
+  cell-index:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      controller index.  0 for controller @ 0x21000, 1 for controller @ 0xc000
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  interrupts:
+    maxItems: 1
+    description: Controller interrupt.
+
+patternProperties:
+  "^dma-channel@[0-9a-f]+$":
+    type: object
+    additionalProperties: false
+
+    properties:
+      compatible:
+        oneOf:
+          # native DMA channel
+          - items:
+              - enum:
+                  - fsl,mpc8540-dma-channel
+                  - fsl,mpc8541-dma-channel
+                  - fsl,mpc8548-dma-channel
+                  - fsl,mpc8555-dma-channel
+                  - fsl,mpc8560-dma-channel
+                  - fsl,mpc8572-dma-channel
+              - const: fsl,eloplus-dma-channel
+
+          # audio DMA channel, see fsl,ssi.yaml
+          - const: fsl,ssi-dma-channel
+
+      reg:
+        maxItems: 1
+
+      cell-index:
+        description: DMA channel index starts at 0.
+
+      interrupts:
+        maxItems: 1
+        description:
+          Per-channel interrupt. Only necessary if no controller interrupt has
+          been provided.
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    dma@21300 {
+        compatible = "fsl,mpc8540-dma", "fsl,eloplus-dma";
+        reg = <0x21300 4>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0 0x21100 0x200>;
+        cell-index = <0>;
+
+        dma-channel@0 {
+            compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
+            reg = <0 0x80>;
+            cell-index = <0>;
+            interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
+        };
+
+        dma-channel@80 {
+            compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
+            reg = <0x80 0x80>;
+            cell-index = <1>;
+            interrupts = <21 IRQ_TYPE_EDGE_FALLING>;
+        };
+
+        dma-channel@100 {
+            compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
+            reg = <0x100 0x80>;
+            cell-index = <2>;
+            interrupts = <22 IRQ_TYPE_EDGE_FALLING>;
+        };
+
+        dma-channel@180 {
+            compatible = "fsl,mpc8540-dma-channel", "fsl,eloplus-dma-channel";
+            reg = <0x180 0x80>;
+            cell-index = <3>;
+            interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
+        };
+    };
+
+...