Kernel-4.18.0-80.el8_spi-sun6i

Allwinner A31/H3 SPI controller

Required properties:

• compatible: Should be “allwinner,sun6i-a31-spi” or “allwinner,sun8i-h3-spi”.
• reg: Should contain register location and length.
• interrupts: Should contain interrupt.
• clocks: phandle to the clocks feeding the SPI controller. Two are

      needed:
  

  • “ahb”: the gated AHB parent clock
  • “mod”: the parent module clock
• clock-names: Must contain the clock names described just above
• resets: phandle to the reset controller asserting this device in

      reset
  

Optional properties:

• dmas: DMA specifiers for rx and tx dma. See the DMA client binding,
  Documentation/devicetree/bindings/dma/dma.txt
• dma-names: DMA request names should include “rx” and “tx” if present.

Example:

spi1: spi@1c69000 {
compatible = “allwinner,sun6i-a31-spi”;
reg = <0x01c69000 0x1000>;
interrupts = <0 66 4>;
clocks = <&ahb1_gates 21>, <&spi1_clk>;
clock-names = “ahb”, “mod”;
resets = <&ahb1_rst 21>;
};

spi0: spi@1c68000 {
compatible = “allwinner,sun8i-h3-spi”;
reg = <0x01c68000 0x1000>;
interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
clock-names = “ahb”, “mod”;
dmas = <&dma 23>, <&dma 23>;
dma-names = “rx”, “tx”;
pinctrl-names = “default”;
pinctrl-0 = <&spi0_pins>;
resets = <&ccu RST_BUS_SPI0>;
#address-cells = <1>;
#size-cells = <0>;
};