1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: SiFive Unleashed Rev C000 Platform DMA 8 9maintainers: 10 - Green Wan <green.wan@sifive.com> 11 - Palmer Debbelt <palmer@sifive.com> 12 - Paul Walmsley <paul.walmsley@sifive.com> 13 14description: | 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. 18 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 21 doc, 22 23 https://static.dev.sifive.com/FU540-C000-v1.0.pdf 24 25properties: 26 compatible: 27 items: 28 - const: sifive,fu540-c000-pdma 29 30 reg: 31 maxItems: 1 32 33 interrupts: 34 minItems: 1 35 maxItems: 8 36 37 '#dma-cells': 38 const: 1 39 40required: 41 - compatible 42 - reg 43 - interrupts 44 - '#dma-cells' 45 46additionalProperties: false 47 48examples: 49 - | 50 dma@3000000 { 51 compatible = "sifive,fu540-c000-pdma"; 52 reg = <0x3000000 0x8000>; 53 interrupts = <23 24 25 26 27 28 29 30>; 54 #dma-cells = <1>; 55 }; 56 57... 58