spi-sifive.yaml (2198B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/spi/spi-sifive.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: SiFive SPI controller 8 9maintainers: 10 - Pragnesh Patel <pragnesh.patel@sifive.com> 11 - Paul Walmsley <paul.walmsley@sifive.com> 12 - Palmer Dabbelt <palmer@sifive.com> 13 14allOf: 15 - $ref: "spi-controller.yaml#" 16 17properties: 18 compatible: 19 items: 20 - enum: 21 - sifive,fu540-c000-spi 22 - sifive,fu740-c000-spi 23 - const: sifive,spi0 24 25 description: 26 Should be "sifive,<chip>-spi" and "sifive,spi<version>". 27 Supported compatible strings are - 28 "sifive,fu540-c000-spi" and "sifive,fu740-c000-spi" for the SiFive SPI v0 29 as integrated onto the SiFive FU540 and FU740 chip resp, and "sifive,spi0" 30 for the SiFive SPI v0 IP block with no chip integration tweaks. 31 Please refer to sifive-blocks-ip-versioning.txt for details 32 33 SPI RTL that corresponds to the IP block version numbers can be found here - 34 https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/spi 35 36 reg: 37 minItems: 1 38 items: 39 - description: SPI registers region 40 - description: Memory mapped flash region 41 42 interrupts: 43 maxItems: 1 44 45 clocks: 46 maxItems: 1 47 48 description: 49 Must reference the frequency given to the controller 50 51 sifive,fifo-depth: 52 description: 53 Depth of hardware queues; defaults to 8 54 $ref: "/schemas/types.yaml#/definitions/uint32" 55 enum: [8] 56 default: 8 57 58 sifive,max-bits-per-word: 59 description: 60 Maximum bits per word; defaults to 8 61 $ref: "/schemas/types.yaml#/definitions/uint32" 62 enum: [0, 1, 2, 3, 4, 5, 6, 7, 8] 63 default: 8 64 65required: 66 - compatible 67 - reg 68 - interrupts 69 - clocks 70 71unevaluatedProperties: false 72 73examples: 74 - | 75 spi: spi@10040000 { 76 compatible = "sifive,fu540-c000-spi", "sifive,spi0"; 77 reg = <0x10040000 0x1000>, <0x20000000 0x10000000>; 78 interrupt-parent = <&plic>; 79 interrupts = <51>; 80 clocks = <&tlclk>; 81 #address-cells = <1>; 82 #size-cells = <0>; 83 sifive,fifo-depth = <8>; 84 sifive,max-bits-per-word = <8>; 85 }; 86 87...