Kernel-4.18.0-80.el8_spi-img-spfi

IMG Synchronous Peripheral Flash Interface (SPFI) controller

Required properties:

• compatible: Must be “img,spfi”.
• reg: Must contain the base address and length of the SPFI registers.
• interrupts: Must contain the SPFI interrupt.
• clocks: Must contain an entry for each entry in clock-names.
  See ../clock/clock-bindings.txt for details.
• clock-names: Must include the following entries:
  • spfi: SPI operating clock
  • sys: SPI system interface clock
• dmas: Must contain an entry for each entry in dma-names.
  See ../dma/dma.txt for details.
• dma-names: Must include the following entries:
  • rx
  • tx
• cs-gpios: Must specify the GPIOs used for chipselect lines.
• #address-cells: Must be 1.
• #size-cells: Must be 0.

Optional properties:

• img,supports-quad-mode: Should be set if the interface supports quad mode
  SPI transfers.
• spfi-max-frequency: Maximum speed supported by the spfi block.

Example:

spi@18100f00 {
compatible = “img,spfi”;
reg = <0x18100f00 0x100>;
interrupts = <GIC_SHARED 22 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&spi_clk>, <&system_clk>;
clock-names = “spfi”, “sys”;
dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 0xffffffff 0>;
dma-names = “rx”, “tx”;

#address-cells = <1>;
#size-cells = <0>;

};