This version (19 Jan 2018 10:21) was approved by Alexandru Ardelean.The Previously approved version (06 Oct 2016 17:47) is available.
Table of Contents
SPI Engine Peripheral Linux Driver
Supported Devices
Source Code
Status
| Source | Mainlined? |
|---|---|
| git | yes (No offloading support) |
Files
| Function | File |
|---|---|
| driver | spi-axi-spi-engine.c |
Device initialization
Devicetree bindings
Required properties:
- compatible: Must be “adi,axi-spi-engine-1.00.a”“
- reg: Physical base address and size of the register map.
- interrupts: Property with a value describing the interrupt number.
- clock-names: List of input clock names - “s_axi_aclk”, “spi_clk”
- clocks: Clock phandles and specifiers (See clock bindings for details on clock-names and clocks).
- #address-cells: Must be <1>
- #size-cells: Must be <0>
Optional subnodes
Subnodes are use to represent the SPI slave devices connected to the SPI master. They follow the generic SPI bindings as outlined in spi-bus.txt.
Example
spi@@44a00000 {
compatible = "adi,axi-spi-engine-1.00.a";
reg = <0x44a00000 0x1000>;
interrupts = <0 56 4>;
clocks = <&clkc 15 &clkc 15>;
clock-names = "s_axi_aclk", "spi_clk";
#address-cells = <1>;
#size-cells = <0>;
/* SPI devices */
};
More information
resources/tools-software/linux-drivers/spi/spi_engine.txt · Last modified: 19 Jan 2018 10:21 by Alexandru Ardelean