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: 15*99a7fa0eSKrzysztof Kozlowski - $ref: spi-controller.yaml# 169c12e34aSPragnesh Patel 179c12e34aSPragnesh Patelproperties: 189c12e34aSPragnesh Patel compatible: 199c12e34aSPragnesh Patel items: 2076347344SYash Shah - enum: 2176347344SYash Shah - sifive,fu540-c000-spi 2276347344SYash 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 - 2876347344SYash Shah "sifive,fu540-c000-spi" and "sifive,fu740-c000-spi" for the SiFive SPI v0 2976347344SYash Shah as integrated onto the SiFive FU540 and FU740 chip resp, and "sifive,spi0" 3076347344SYash 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 54*99a7fa0eSKrzysztof Kozlowski $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 61*99a7fa0eSKrzysztof Kozlowski $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