Based on kernel version 5.6.13
. Page generated on 2020-05-15 16:46 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | * Rockchip SPI Controller The Rockchip SPI controller is used to interface with various devices such as flash and display controllers using the SPI communication interface. Required Properties: - compatible: should be one of the following. "rockchip,rv1108-spi" for rv1108 SoCs. "rockchip,px30-spi", "rockchip,rk3066-spi" for px30 SoCs. "rockchip,rk3036-spi" for rk3036 SoCS. "rockchip,rk3066-spi" for rk3066 SoCs. "rockchip,rk3188-spi" for rk3188 SoCs. "rockchip,rk3228-spi" for rk3228 SoCS. "rockchip,rk3288-spi" for rk3288 SoCs. "rockchip,rk3368-spi" for rk3368 SoCs. "rockchip,rk3399-spi" for rk3399 SoCs. - reg: physical base address of the controller and length of memory mapped region. - interrupts: The interrupt number to the cpu. The interrupt specifier format depends on the interrupt controller. - clocks: Must contain an entry for each entry in clock-names. - clock-names: Shall be "spiclk" for the transfer-clock, and "apb_pclk" for the peripheral clock. - #address-cells: should be 1. - #size-cells: should be 0. Optional Properties: - dmas: DMA specifiers for tx and rx dma. See the DMA client binding, Documentation/devicetree/bindings/dma/dma.txt - dma-names: DMA request names should include "tx" and "rx" if present. - rx-sample-delay-ns: nanoseconds to delay after the SCLK edge before sampling Rx data (may need to be fine tuned for high capacitance lines). No delay (0) by default. - pinctrl-names: Names for the pin configuration(s); may be "default" or "sleep", where the "sleep" configuration may describe the state the pins should be in during system suspend. See also pinctrl/pinctrl-bindings.txt. Example: spi0: spi@ff110000 { compatible = "rockchip,rk3066-spi"; reg = <0xff110000 0x1000>; dmas = <&pdma1 11>, <&pdma1 12>; dma-names = "tx", "rx"; rx-sample-delay-ns = <10>; #address-cells = <1>; #size-cells = <0>; interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; clock-names = "spiclk", "apb_pclk"; pinctrl-0 = <&spi1_pins>; pinctrl-1 = <&spi1_sleep>; pinctrl-names = "default", "sleep"; }; |