1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SiFive Unleashed Rev C000 Platform DMA
10 - Green Wan <green.wan@sifive.com>
11 - Palmer Debbelt <palmer@sifive.com>
12 - Paul Walmsley <paul.walmsley@sifive.com>
15 Platform DMA is a DMA engine of SiFive Unleashed. It supports 4
16 channels. Each channel has 2 interrupts. One is for DMA done and
17 the other is for DME error.
19 In different SoC, DMA could be attached to different IRQ line.
20 DT file need to be changed to meet the difference. For technical
23 https://static.dev.sifive.com/FU540-C000-v1.0.pdf
26 - $ref: dma-controller.yaml#
33 - sifive,fu540-c000-pdma
36 Should be "sifive,<chip>-pdma" and "sifive,pdma<version>".
37 Supported compatible strings are -
38 "sifive,fu540-c000-pdma" for the SiFive PDMA v0 as integrated onto the
39 SiFive FU540 chip resp and "sifive,pdma0" for the SiFive PDMA v0 IP block
40 with no chip integration tweaks.
50 description: For backwards-compatibility, the default value is 4
63 unevaluatedProperties: false
67 dma-controller@3000000 {
68 compatible = "sifive,fu540-c000-pdma", "sifive,pdma0";
69 reg = <0x3000000 0x8000>;
71 interrupts = <23>, <24>, <25>, <26>, <27>, <28>, <29>, <30>;