1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/spi/spi-sifive.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SiFive SPI controller
10 - Pragnesh Patel <pragnesh.patel@sifive.com>
11 - Paul Walmsley <paul.walmsley@sifive.com>
12 - Palmer Dabbelt <palmer@sifive.com>
15 - $ref: "spi-controller.yaml#"
21 - sifive,fu540-c000-spi
22 - sifive,fu740-c000-spi
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
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
39 - description: SPI registers region
40 - description: Memory mapped flash region
49 Must reference the frequency given to the controller
53 Depth of hardware queues; defaults to 8
54 $ref: "/schemas/types.yaml#/definitions/uint32"
58 sifive,max-bits-per-word:
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]
71 unevaluatedProperties: false
76 compatible = "sifive,fu540-c000-spi", "sifive,spi0";
77 reg = <0x10040000 0x1000>, <0x20000000 0x10000000>;
78 interrupt-parent = <&plic>;
83 sifive,fifo-depth = <8>;
84 sifive,max-bits-per-word = <8>;