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authorGreen Wan <green.wan@sifive.com>2019-11-07 09:49:19 +0100
committerVinod Koul <vkoul@kernel.org>2019-11-14 08:10:45 +0100
commitfa805360f4cfa34cb3575715e1c8b4f9a253b474 (patch)
tree7436e5ca0500e9ad2f641c87977e4c1cc27a05bf /Documentation/devicetree/bindings/dma
parentdmaengine: zx: remove: removed dmam_pool_destroy (diff)
downloadlinux-fa805360f4cfa34cb3575715e1c8b4f9a253b474.tar.xz
linux-fa805360f4cfa34cb3575715e1c8b4f9a253b474.zip
dt-bindings: dmaengine: sf-pdma: add bindins for SiFive PDMA
Add DT bindings document for Platform DMA(PDMA) driver of board, HiFive Unleashed Rev A00. Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com> Signed-off-by: Green Wan <green.wan@sifive.com> Link: https://lore.kernel.org/r/20191107084955.7580-2-green.wan@sifive.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/dma')
-rw-r--r--Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml55
1 files changed, 55 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
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index 000000000000..2ca3ddbe1ff4
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+++ b/Documentation/devicetree/bindings/dma/sifive,fu540-c000-pdma.yaml
@@ -0,0 +1,55 @@
+# 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
+
+properties:
+ compatible:
+ items:
+ - const: sifive,fu540-c000-pdma
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ minItems: 1
+ maxItems: 8
+
+ '#dma-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - '#dma-cells'
+
+examples:
+ - |
+ dma@3000000 {
+ compatible = "sifive,fu540-c000-pdma";
+ reg = <0x0 0x3000000 0x0 0x8000>;
+ interrupts = <23 24 25 26 27 28 29 30>;
+ #dma-cells = <1>;
+ };
+
+...