Merge tag 'dmaengine-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

bfdf35c5 · Linus Torvalds <[email protected]> · 2025-06-05 08:49:30 -07:00

Pull dmaengine updates from Vinod Koul:
 "A fairly small update for the dmaengine subsystem. This has a new ARM
  dmaengine driver and couple of new device support and few driver
  changes:

  New support:
   - Renesas RZ/V2H(P) dma support for r9a09g057
   - Arm DMA-350 driver
   - Tegra Tegra264 ADMA support

  Updates:
   - AMD ptdma driver code removal and optimizations
   - Freescale edma error interrupt handler support"

* tag 'dmaengine-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (27 commits)
  dmaengine: idxd: Remove unused pointer and macro
  arm64: dts: renesas: r9a09g057: Add DMAC nodes
  dmaengine: sh: rz-dmac: Add RZ/V2H(P) support
  dmaengine: sh: rz-dmac: Allow for multiple DMACs
  irqchip/renesas-rzv2h: Add rzv2h_icu_register_dma_req()
  dt-bindings: dma: rz-dmac: Document RZ/V2H(P) family of SoCs
  dt-bindings: dma: rz-dmac: Restrict properties for RZ/A1H
  dmaengine: idxd: Narrow the restriction on BATCH to ver. 1 only
  dmaengine: ti: Add NULL check in udma_probe()
  fsldma: Set correct dma_mask based on hw capability
  dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using
  dmaengine: xilinx_dma: Set dma_device directions
  dmaengine: tegra210-adma: Add Tegra264 support
  dt-bindings: Document Tegra264 ADMA support
  dmaengine: dw-edma: Add HDMA NATIVE map check
  dmaegnine: fsl-edma: add edma error interrupt handler
  dt-bindings: dma: fsl-edma: increase maxItems of interrupts and interrupt-names
  dmaengine: ARM_DMA350 should depend on ARM/ARM64
  dt-bindings: dma: qcom,bam: Document dma-coherent property
  dmaengine: Add Arm DMA-350 driver
  ...

Commit: bfdf35c5dc6267f70f76abddfacface4dd3b9ac0
Parents: d12ed2b7 · 3c018bf5

Merge commit. Changes below are compared with the first parent: d12ed2b7.

Changes

29 files changed · +1463 −106

File	Status	Add	Del	Content
Documentation/devicetree/bindings/dma/arm,dma-350.yaml	added	+44	−0	View file
Documentation/devicetree/bindings/dma/fsl,edma.yaml	modified	+2	−2	View file
Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml	modified	+2	−0	View file
Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml	modified	+2	−0	View file
Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml	modified	+89	−18	View file
Documentation/driver-api/dmaengine/provider.rst	modified	+2	−2	View file
MAINTAINERS	modified	+1	−1	View file
arch/arm64/boot/dts/renesas/r9a09g057.dtsi	modified	+165	−0	View file
drivers/dma/Kconfig	modified	+8	−0	View file
drivers/dma/Makefile	modified	+1	−0	View file
drivers/dma/amd/ptdma/ptdma-dmaengine.c	modified	+4	−19	View file
drivers/dma/amd/ptdma/ptdma.h	modified	+0	−1	View file
drivers/dma/arm-dma350.c	added	+660	−0	View file
drivers/dma/at_xdmac.c	modified	+2	−4	View file
drivers/dma/dw-edma/dw-edma-pcie.c	modified	+4	−1	View file
drivers/dma/fsl-edma-common.c	modified	+22	−8	View file
drivers/dma/fsl-edma-common.h	modified	+18	−0	View file
drivers/dma/fsl-edma-main.c	modified	+109	−5	View file
drivers/dma/fsldma.c	modified	+16	−4	View file
drivers/dma/fsldma.h	modified	+1	−0	View file
drivers/dma/idxd/cdev.c	modified	+7	−3	View file
drivers/dma/idxd/idxd.h	modified	+0	−2	View file
drivers/dma/idxd/sysfs.c	modified	+4	−2	View file
drivers/dma/sh/rz-dmac.c	modified	+76	−8	View file
drivers/dma/tegra210-adma.c	modified	+160	−25	View file
drivers/dma/ti/k3-udma.c	modified	+2	−1	View file
drivers/dma/xilinx/xilinx_dma.c	modified	+4	−0	View file
drivers/irqchip/irq-renesas-rzv2h.c	modified	+35	−0	View file
include/linux/irqchip/irq-renesas-rzv2h.h	added	+23	−0	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/devicetree/bindings/dma/arm,dma-350.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
new file mode 100644
index 0000000..429f682
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/arm,dma-350.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Arm CoreLink DMA-350 Controller
+
+maintainers:
+  - Robin Murphy <[email protected]>
+
+allOf:
+  - $ref: dma-controller.yaml#
+
+properties:
+  compatible:
+    const: arm,dma-350
+
+  reg:
+    items:
+      - description: Base and size of the full register map
+
+  interrupts:
+    minItems: 1
+    items:
+      - description: Channel 0 interrupt
+      - description: Channel 1 interrupt
+      - description: Channel 2 interrupt
+      - description: Channel 3 interrupt
+      - description: Channel 4 interrupt
+      - description: Channel 5 interrupt
+      - description: Channel 6 interrupt
+      - description: Channel 7 interrupt
+
+  "#dma-cells":
+    const: 1
+    description: The cell is the trigger input number
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false

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

View file

diff --git a/Documentation/devicetree/bindings/dma/fsl,edma.yaml b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
index 950e8fa..fa4248e 100644
--- a/Documentation/devicetree/bindings/dma/fsl,edma.yaml
+++ b/Documentation/devicetree/bindings/dma/fsl,edma.yaml
@@ -48,11 +48,11 @@ properties:
 
   interrupts:
     minItems: 1
-    maxItems: 64
+    maxItems: 65
 
   interrupt-names:
     minItems: 1
-    maxItems: 64
+    maxItems: 65
 
   "#dma-cells":
     description: |

Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml
index d3f8c26..da0235e 100644
--- a/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml
+++ b/Documentation/devicetree/bindings/dma/nvidia,tegra210-adma.yaml
@@ -19,6 +19,7 @@ properties:
       - enum:
           - nvidia,tegra210-adma
           - nvidia,tegra186-adma
+          - nvidia,tegra264-adma
       - items:
           - enum:
               - nvidia,tegra234-adma
@@ -92,6 +93,7 @@ allOf:
           contains:
             enum:
               - nvidia,tegra186-adma
+              - nvidia,tegra264-adma
     then:
       anyOf:
         - properties:

Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
index 3ad0d9b..f2f87f0 100644
--- a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
@@ -42,6 +42,8 @@ properties:
   interrupts:
     maxItems: 1
 
+  dma-coherent: true
+
   iommus:
     minItems: 1
     maxItems: 6

Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml

View file

diff --git a/Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml b/Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml
index b356251..92b1276 100644
--- a/Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml
@@ -11,19 +11,23 @@ maintainers:
 
 properties:
   compatible:
-    items:
-      - enum:
-          - renesas,r7s72100-dmac # RZ/A1H
-          - renesas,r9a07g043-dmac # RZ/G2UL and RZ/Five
-          - renesas,r9a07g044-dmac # RZ/G2{L,LC}
-          - renesas,r9a07g054-dmac # RZ/V2L
-          - renesas,r9a08g045-dmac # RZ/G3S
-      - const: renesas,rz-dmac
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r7s72100-dmac # RZ/A1H
+              - renesas,r9a07g043-dmac # RZ/G2UL and RZ/Five
+              - renesas,r9a07g044-dmac # RZ/G2{L,LC}
+              - renesas,r9a07g054-dmac # RZ/V2L
+              - renesas,r9a08g045-dmac # RZ/G3S
+          - const: renesas,rz-dmac
+
+      - const: renesas,r9a09g057-dmac # RZ/V2H(P)
 
   reg:
     items:
       - description: Control and channel register block
       - description: DMA extended resource selector block
+    minItems: 1
 
   interrupts:
     maxItems: 17
@@ -52,6 +56,7 @@ properties:
     items:
       - description: DMA main clock
       - description: DMA register access clock
+    minItems: 1
 
   clock-names:
     items:
@@ -61,10 +66,10 @@ properties:
   '#dma-cells':
     const: 1
     description:
-      The cell specifies the encoded MID/RID values of the DMAC port
-      connected to the DMA client and the slave channel configuration
-      parameters.
-      bits[0:9] - Specifies MID/RID value
+      The cell specifies the encoded MID/RID or the REQ No values of
+      the DMAC port connected to the DMA client and the slave channel
+      configuration parameters.
+      bits[0:9] - Specifies the MID/RID or the REQ No value
       bit[10] - Specifies DMA request high enable (HIEN)
       bit[11] - Specifies DMA request detection type (LVL)
       bits[12:14] - Specifies DMAACK output mode (AM)
@@ -80,12 +85,26 @@ properties:
     items:
       - description: Reset for DMA ARESETN reset terminal
       - description: Reset for DMA RST_ASYNC reset terminal
+    minItems: 1
 
   reset-names:
     items:
       - const: arst
       - const: rst_async
 
+  renesas,icu:
+    description:
+      It must contain the phandle to the ICU and the index of the DMAC as seen
+      from the ICU.
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: Phandle to the ICU node.
+          - description:
+              The number of the DMAC as seen from the ICU, i.e. parameter k from
+              register ICU_DMkSELy. This may differ from the actual DMAC instance
+              number.
+
 required:
   - compatible
   - reg
@@ -98,13 +117,25 @@ allOf:
   - $ref: dma-controller.yaml#
 
   - if:
-      not:
-        properties:
-          compatible:
-            contains:
-              enum:
-                - renesas,r7s72100-dmac
+      properties:
+        compatible:
+          contains:
+            enum:
+              - renesas,r9a07g043-dmac
+              - renesas,r9a07g044-dmac
+              - renesas,r9a07g054-dmac
+              - renesas,r9a08g045-dmac
     then:
+      properties:
+        reg:
+          minItems: 2
+        clocks:
+          minItems: 2
+        resets:
+          minItems: 2
+
+        renesas,icu: false
+
       required:
         - clocks
         - clock-names
@@ -112,6 +143,46 @@ allOf:
         - resets
         - reset-names
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r7s72100-dmac
+    then:
+      properties:
+        reg:
+          minItems: 2
+
+        clocks: false
+        clock-names: false
+        power-domains: false
+        resets: false
+        reset-names: false
+        renesas,icu: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: renesas,r9a09g057-dmac
+    then:
+      properties:
+        reg:
+          maxItems: 1
+        clocks:
+          maxItems: 1
+        resets:
+          maxItems: 1
+
+        clock-names: false
+        reset-names: false
+
+      required:
+        - clocks
+        - power-domains
+        - renesas,icu
+        - resets
+
 additionalProperties: false
 
 examples:

Documentation/driver-api/dmaengine/provider.rst

View file

diff --git a/Documentation/driver-api/dmaengine/provider.rst b/Documentation/driver-api/dmaengine/provider.rst
index 8f09106..1594598 100644
--- a/Documentation/driver-api/dmaengine/provider.rst
+++ b/Documentation/driver-api/dmaengine/provider.rst
@@ -172,8 +172,8 @@ Currently, the types available are:
   - It's usually used for copying pixel data between host memory and
     memory-mapped GPU device memory, such as found on modern PCI video graphics
     cards. The most immediate example is the OpenGL API function
-    ``glReadPielx()``, which might require a verbatim copy of a huge framebuffer
-    from local device memory onto host memory.
+    ``glReadPixels()``, which might require a verbatim copy of a huge
+    framebuffer from local device memory onto host memory.
 
 - DMA_XOR
 

MAINTAINERS

View file

diff --git a/MAINTAINERS b/MAINTAINERS
index eecc41c..1f1c9ae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10781,7 +10781,7 @@ F:	net/dsa/tag_hellcreek.c
 
 HISILICON DMA DRIVER
 M:	Zhou Wang <[email protected]>
-M:	Jie Hai <[email protected]>
+M:	Longfang Liu <[email protected]>
 L:	[email protected]
 S:	Maintained
 F:	drivers/dma/hisi_dma.c

arch/arm64/boot/dts/renesas/r9a09g057.dtsi

View file

diff --git a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
index 18ab563..0f35019 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
+++ b/arch/arm64/boot/dts/renesas/r9a09g057.dtsi
@@ -280,6 +280,171 @@
 			resets = <&cpg 0x30>;
 		};
 
+		dmac0: dma-controller@11400000 {
+			compatible = "renesas,r9a09g057-dmac";
+			reg = <0 0x11400000 0 0x10000>;
+			interrupts = <GIC_SPI 499 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 89  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 90  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 91  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 92  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 93  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 94  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 95  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 96  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 97  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 98  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 99  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 100 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 101 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 102 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 103 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 104 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "error",
+					  "ch0", "ch1", "ch2", "ch3",
+					  "ch4", "ch5", "ch6", "ch7",
+					  "ch8", "ch9", "ch10", "ch11",
+					  "ch12", "ch13", "ch14", "ch15";
+			clocks = <&cpg CPG_MOD 0x0>;
+			power-domains = <&cpg>;
+			resets = <&cpg 0x31>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			renesas,icu = <&icu 4>;
+		};
+
+		dmac1: dma-controller@14830000 {
+			compatible = "renesas,r9a09g057-dmac";
+			reg = <0 0x14830000 0 0x10000>;
+			interrupts = <GIC_SPI 495 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 25  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 26  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 27  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 28  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 29  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 30  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 31  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 32  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 33  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 34  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 35  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 36  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 37  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 38  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 39  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 40  IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "error",
+					  "ch0", "ch1", "ch2", "ch3",
+					  "ch4", "ch5", "ch6", "ch7",
+					  "ch8", "ch9", "ch10", "ch11",
+					  "ch12", "ch13", "ch14", "ch15";
+			clocks = <&cpg CPG_MOD 0x1>;
+			power-domains = <&cpg>;
+			resets = <&cpg 0x32>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			renesas,icu = <&icu 0>;
+		};
+
+		dmac2: dma-controller@14840000 {
+			compatible = "renesas,r9a09g057-dmac";
+			reg = <0 0x14840000 0 0x10000>;
+			interrupts = <GIC_SPI 496 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 41  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 42  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 43  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 44  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 45  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 46  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 47  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 48  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 49  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 50  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 51  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 52  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 53  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 54  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 55  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 56  IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "error",
+					  "ch0", "ch1", "ch2", "ch3",
+					  "ch4", "ch5", "ch6", "ch7",
+					  "ch8", "ch9", "ch10", "ch11",
+					  "ch12", "ch13", "ch14", "ch15";
+			clocks = <&cpg CPG_MOD 0x2>;
+			power-domains = <&cpg>;
+			resets = <&cpg 0x33>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			renesas,icu = <&icu 1>;
+		};
+
+		dmac3: dma-controller@12000000 {
+			compatible = "renesas,r9a09g057-dmac";
+			reg = <0 0x12000000 0 0x10000>;
+			interrupts = <GIC_SPI 497 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 57  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 58  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 59  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 60  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 61  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 62  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 63  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 64  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 65  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 66  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 67  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 68  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 69  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 70  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 71  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 72  IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "error",
+					  "ch0", "ch1", "ch2", "ch3",
+					  "ch4", "ch5", "ch6", "ch7",
+					  "ch8", "ch9", "ch10", "ch11",
+					  "ch12", "ch13", "ch14", "ch15";
+			clocks = <&cpg CPG_MOD 0x3>;
+			power-domains = <&cpg>;
+			resets = <&cpg 0x34>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			renesas,icu = <&icu 2>;
+		};
+
+		dmac4: dma-controller@12010000 {
+			compatible = "renesas,r9a09g057-dmac";
+			reg = <0 0x12010000 0 0x10000>;
+			interrupts = <GIC_SPI 498 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 73  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 74  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 75  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 76  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 77  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 78  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 79  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 80  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 81  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 82  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 83  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 84  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 85  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 86  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 87  IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 88  IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "error",
+					  "ch0", "ch1", "ch2", "ch3",
+					  "ch4", "ch5", "ch6", "ch7",
+					  "ch8", "ch9", "ch10", "ch11",
+					  "ch12", "ch13", "ch14", "ch15";
+			clocks = <&cpg CPG_MOD 0x4>;
+			power-domains = <&cpg>;
+			resets = <&cpg 0x35>;
+			#dma-cells = <1>;
+			dma-channels = <16>;
+			renesas,icu = <&icu 3>;
+		};
+
 		ostm0: timer@11800000 {
 			compatible = "renesas,r9a09g057-ostm", "renesas,ostm";
 			reg = <0x0 0x11800000 0x0 0x1000>;

drivers/dma/Kconfig

View file

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index df2d2dc..db87dd2 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -93,6 +93,14 @@ config APPLE_ADMAC
 	help
 	  Enable support for Audio DMA Controller found on Apple Silicon SoCs.
 
+config ARM_DMA350
+	tristate "Arm DMA-350 support"
+	depends on ARM || ARM64 || COMPILE_TEST
+	select DMA_ENGINE
+	select DMA_VIRTUAL_CHANNELS
+	help
+	  Enable support for the Arm DMA-350 controller.
+
 config AT_HDMAC
 	tristate "Atmel AHB DMA support"
 	depends on ARCH_AT91

drivers/dma/Makefile

View file

diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile
index 19ba465..ba97326 100644
--- a/drivers/dma/Makefile
+++ b/drivers/dma/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_ALTERA_MSGDMA) += altera-msgdma.o
 obj-$(CONFIG_AMBA_PL08X) += amba-pl08x.o
 obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/
 obj-$(CONFIG_APPLE_ADMAC) += apple-admac.o
+obj-$(CONFIG_ARM_DMA350) += arm-dma350.o
 obj-$(CONFIG_AT_HDMAC) += at_hdmac.o
 obj-$(CONFIG_AT_XDMAC) += at_xdmac.o
 obj-$(CONFIG_AXI_DMAC) += dma-axi-dmac.o

drivers/dma/amd/ptdma/ptdma-dmaengine.c

View file

diff --git a/drivers/dma/amd/ptdma/ptdma-dmaengine.c b/drivers/dma/amd/ptdma/ptdma-dmaengine.c
index 8133966..628c49c 100644
--- a/drivers/dma/amd/ptdma/ptdma-dmaengine.c
+++ b/drivers/dma/amd/ptdma/ptdma-dmaengine.c
@@ -566,7 +566,6 @@ int pt_dmaengine_register(struct pt_device *pt)
 	struct ae4_device *ae4 = NULL;
 	struct pt_dma_chan *chan;
 	char *desc_cache_name;
-	char *cmd_cache_name;
 	int ret, i;
 
 	if (pt->ver == AE4_DMA_VERSION)
@@ -582,27 +581,17 @@ int pt_dmaengine_register(struct pt_device *pt)
 	if (!pt->pt_dma_chan)
 		return -ENOMEM;
 
-	cmd_cache_name = devm_kasprintf(pt->dev, GFP_KERNEL,
-					"%s-dmaengine-cmd-cache",
-					dev_name(pt->dev));
-	if (!cmd_cache_name)
-		return -ENOMEM;
-
 	desc_cache_name = devm_kasprintf(pt->dev, GFP_KERNEL,
 					 "%s-dmaengine-desc-cache",
 					 dev_name(pt->dev));
-	if (!desc_cache_name) {
-		ret = -ENOMEM;
-		goto err_cache;
-	}
+	if (!desc_cache_name)
+		return -ENOMEM;
 
 	pt->dma_desc_cache = kmem_cache_create(desc_cache_name,
 					       sizeof(struct pt_dma_desc), 0,
 					       SLAB_HWCACHE_ALIGN, NULL);
-	if (!pt->dma_desc_cache) {
-		ret = -ENOMEM;
-		goto err_cache;
-	}
+	if (!pt->dma_desc_cache)
+		return -ENOMEM;
 
 	dma_dev->dev = pt->dev;
 	dma_dev->src_addr_widths = DMA_SLAVE_BUSWIDTH_64_BYTES;
@@ -656,9 +645,6 @@ int pt_dmaengine_register(struct pt_device *pt)
 err_reg:
 	kmem_cache_destroy(pt->dma_desc_cache);
 
-err_cache:
-	kmem_cache_destroy(pt->dma_cmd_cache);
-
 	return ret;
 }
 EXPORT_SYMBOL_GPL(pt_dmaengine_register);
@@ -670,5 +656,4 @@ void pt_dmaengine_unregister(struct pt_device *pt)
 	dma_async_device_unregister(dma_dev);
 
 	kmem_cache_destroy(pt->dma_desc_cache);
-	kmem_cache_destroy(pt->dma_cmd_cache);
 }

drivers/dma/amd/ptdma/ptdma.h

View file

diff --git a/drivers/dma/amd/ptdma/ptdma.h b/drivers/dma/amd/ptdma/ptdma.h
index 0a79391..ef3f556 100644
--- a/drivers/dma/amd/ptdma/ptdma.h
+++ b/drivers/dma/amd/ptdma/ptdma.h
@@ -254,7 +254,6 @@ struct pt_device {
 	/* Support for the DMA Engine capabilities */
 	struct dma_device dma_dev;
 	struct pt_dma_chan *pt_dma_chan;
-	struct kmem_cache *dma_cmd_cache;
 	struct kmem_cache *dma_desc_cache;
 
 	wait_queue_head_t lsb_queue;

drivers/dma/arm-dma350.c

View file

diff --git a/drivers/dma/arm-dma350.c b/drivers/dma/arm-dma350.c
new file mode 100644
index 0000000..9efe2ca
--- /dev/null
+++ b/drivers/dma/arm-dma350.c
@@ -0,0 +1,660 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2024-2025 Arm Limited
+// Arm DMA-350 driver
+
+#include <linux/bitfield.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "dmaengine.h"
+#include "virt-dma.h"
+
+#define DMAINFO			0x0f00
+
+#define DMA_BUILDCFG0		0xb0
+#define DMA_CFG_DATA_WIDTH	GENMASK(18, 16)
+#define DMA_CFG_ADDR_WIDTH	GENMASK(15, 10)
+#define DMA_CFG_NUM_CHANNELS	GENMASK(9, 4)