imx8mm spi slave

[xiaolong_zhang]

I want to use spi slave mode, my kernel version is 5.4.3; this is my dts : 

&ecspi2 {
fsl,spi-num-chipselects= < 1 >;
cs-gpios = <&gpio5 13 0 > ;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi2>;
spi-slave;
status = "okay";
#address-cells = <1>;
#size-cells = <0>;

spidev0: spi@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <1>;
compatible = "spidev";
spi-max-frequency = <20000000>;
};
};

Warning (spi_bus_bridge): /soc@0/bus@30800000/spi@30830000: incorrect #address-cells for SPI bus

Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge'

[Zhiming_Liu]

Remove #address-cells = <1>; #size-cells = <1>; in spidev0: spi@0

[xiaolong_zhang]

arch/arm64/boot/dts/myir/myb-imx8mm.dtsi:852.25-864.6: Warning (spi_bus_bridge): /soc@0/bus@30800000/spi@30830000: incorrect #address-cells for SPI bus
also defined at arch/arm64/boot/dts/myir/myb-imx8mm-base.dts:162.9-177.3
arch/arm64/boot/dts/myir/myb-imx8mm-base.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge'

ecspi2: spi@30830000 {
compatible = "fsl,imx8mm-ecspi", "fsl,imx6ul-ecspi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x30830000 0x10000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MM_CLK_ECSPI2_ROOT>,
<&clk IMX8MM_CLK_ECSPI2_ROOT>;
clock-names = "ipg", "per";
dmas = <&sdma1 2 7 1>, <&sdma1 3 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};

&ecspi2 {
fsl,spi-num-chipselects= < 1 >;
cs-gpios = <&gpio5 13 0 > ;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi2>;
spi-slave;
status = "okay";
#address-cells = <1>;
#size-cells = <0>;

spidev1: spi@1 {
reg = <0>;
compatible = "spidev";
spi-max-frequency = <20000000>;
};
};