Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 74 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
new file mode 100644
index 000000000..327175578
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive Unleashed Rev C000 Platform DMA
+
+maintainers:
+  - Green Wan <green.wan@sifive.com>
+  - Palmer Debbelt <palmer@sifive.com>
+  - Paul Walmsley <paul.walmsley@sifive.com>
+
+description: |
+  Platform DMA is a DMA engine of SiFive Unleashed. It supports 4
+  channels. Each channel has 2 interrupts. One is for DMA done and
+  the other is for DME error.
+
+  In different SoC, DMA could be attached to different IRQ line.
+  DT file need to be changed to meet the difference. For technical
+  doc,
+
+  https://static.dev.sifive.com/FU540-C000-v1.0.pdf
+
+allOf:
+  - $ref: "dma-controller.yaml#"
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - sifive,fu540-c000-pdma
+      - const: sifive,pdma0
+    description:
+      Should be "sifive,<chip>-pdma" and "sifive,pdma<version>".
+      Supported compatible strings are -
+      "sifive,fu540-c000-pdma" for the SiFive PDMA v0 as integrated onto the
+      SiFive FU540 chip resp and "sifive,pdma0" for the SiFive PDMA v0 IP block
+      with no chip integration tweaks.
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    maxItems: 8
+
+  dma-channels:
+    description: For backwards-compatibility, the default value is 4
+    minimum: 1
+    maximum: 4
+    default: 4
+
+  '#dma-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    dma-controller@3000000 {
+      compatible = "sifive,fu540-c000-pdma", "sifive,pdma0";
+      reg = <0x3000000 0x8000>;
+      dma-channels = <4>;
+      interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>;
+      #dma-cells = <1>;
+    };
+
+...