19c12e34aSPragnesh Patel# SPDX-License-Identifier: GPL-2.0 29c12e34aSPragnesh Patel%YAML 1.2 39c12e34aSPragnesh Patel--- 49c12e34aSPragnesh Patel$id: http://devicetree.org/schemas/spi/spi-sifive.yaml# 59c12e34aSPragnesh Patel$schema: http://devicetree.org/meta-schemas/core.yaml# 69c12e34aSPragnesh Patel 79c12e34aSPragnesh Pateltitle: SiFive SPI controller 89c12e34aSPragnesh Patel 99c12e34aSPragnesh Patelmaintainers: 109c12e34aSPragnesh Patel - Pragnesh Patel <pragnesh.patel@sifive.com> 119c12e34aSPragnesh Patel - Paul Walmsley <paul.walmsley@sifive.com> 129c12e34aSPragnesh Patel - Palmer Dabbelt <palmer@sifive.com> 139c12e34aSPragnesh Patel 149c12e34aSPragnesh PatelallOf: 159c12e34aSPragnesh Patel - $ref: "spi-controller.yaml#" 169c12e34aSPragnesh Patel 179c12e34aSPragnesh Patelproperties: 189c12e34aSPragnesh Patel compatible: 199c12e34aSPragnesh Patel items: 20*76347344SYash Shah - enum: 21*76347344SYash Shah - sifive,fu540-c000-spi 22*76347344SYash Shah - sifive,fu740-c000-spi 239c12e34aSPragnesh Patel - const: sifive,spi0 249c12e34aSPragnesh Patel 259c12e34aSPragnesh Patel description: 269c12e34aSPragnesh Patel Should be "sifive,<chip>-spi" and "sifive,spi<version>". 279c12e34aSPragnesh Patel Supported compatible strings are - 28*76347344SYash Shah "sifive,fu540-c000-spi" and "sifive,fu740-c000-spi" for the SiFive SPI v0 29*76347344SYash Shah as integrated onto the SiFive FU540 and FU740 chip resp, and "sifive,spi0" 30*76347344SYash Shah for the SiFive SPI v0 IP block with no chip integration tweaks. 319c12e34aSPragnesh Patel Please refer to sifive-blocks-ip-versioning.txt for details 329c12e34aSPragnesh Patel 339c12e34aSPragnesh Patel SPI RTL that corresponds to the IP block version numbers can be found here - 349c12e34aSPragnesh Patel https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/spi 359c12e34aSPragnesh Patel 369c12e34aSPragnesh Patel reg: 37e2f233ecSRob Herring minItems: 1 38e2f233ecSRob Herring items: 39e2f233ecSRob Herring - description: SPI registers region 40e2f233ecSRob Herring - description: Memory mapped flash region 419c12e34aSPragnesh Patel 429c12e34aSPragnesh Patel interrupts: 439c12e34aSPragnesh Patel maxItems: 1 449c12e34aSPragnesh Patel 459c12e34aSPragnesh Patel clocks: 469c12e34aSPragnesh Patel maxItems: 1 479c12e34aSPragnesh Patel 489c12e34aSPragnesh Patel description: 499c12e34aSPragnesh Patel Must reference the frequency given to the controller 509c12e34aSPragnesh Patel 519c12e34aSPragnesh Patel sifive,fifo-depth: 529c12e34aSPragnesh Patel description: 539c12e34aSPragnesh Patel Depth of hardware queues; defaults to 8 543d21a460SRob Herring $ref: "/schemas/types.yaml#/definitions/uint32" 553d21a460SRob Herring enum: [8] 563d21a460SRob Herring default: 8 579c12e34aSPragnesh Patel 589c12e34aSPragnesh Patel sifive,max-bits-per-word: 599c12e34aSPragnesh Patel description: 609c12e34aSPragnesh Patel Maximum bits per word; defaults to 8 613d21a460SRob Herring $ref: "/schemas/types.yaml#/definitions/uint32" 623d21a460SRob Herring enum: [0, 1, 2, 3, 4, 5, 6, 7, 8] 633d21a460SRob Herring default: 8 649c12e34aSPragnesh Patel 659c12e34aSPragnesh Patelrequired: 669c12e34aSPragnesh Patel - compatible 679c12e34aSPragnesh Patel - reg 689c12e34aSPragnesh Patel - interrupts 699c12e34aSPragnesh Patel - clocks 709c12e34aSPragnesh Patel 716fdc6e23SRob HerringunevaluatedProperties: false 726fdc6e23SRob Herring 739c12e34aSPragnesh Patelexamples: 749c12e34aSPragnesh Patel - | 759c12e34aSPragnesh Patel spi: spi@10040000 { 769c12e34aSPragnesh Patel compatible = "sifive,fu540-c000-spi", "sifive,spi0"; 77fba56184SRob Herring reg = <0x10040000 0x1000>, <0x20000000 0x10000000>; 789c12e34aSPragnesh Patel interrupt-parent = <&plic>; 799c12e34aSPragnesh Patel interrupts = <51>; 809c12e34aSPragnesh Patel clocks = <&tlclk>; 819c12e34aSPragnesh Patel #address-cells = <1>; 829c12e34aSPragnesh Patel #size-cells = <0>; 839c12e34aSPragnesh Patel sifive,fifo-depth = <8>; 849c12e34aSPragnesh Patel sifive,max-bits-per-word = <8>; 859c12e34aSPragnesh Patel }; 869c12e34aSPragnesh Patel 879c12e34aSPragnesh Patel... 88