正点原子IMX6UL icm20608 读数据全0问题

问题出在设备树
修改arch/arm/boot/dts/imx6ull-14x14-evk.dts 设备树

&ecspi3 { fsl,spi-num-chipselects = <1>; cs-gpios = <&gpio1 20 GPIO_ACTIVE_LOW>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ecspi3>; status = "okay"; spidev: icm20608@0 { compatible = "alientek,icm20608"; spi-max-frequency = <8000000>; reg = <0>; }; }; pinctrl_ecspi3: ecspi3grp { fsl,pins = < MX6UL_PAD_UART2_RTS_B__ECSPI3_MISO 0x100b1 /* MISO*/ MX6UL_PAD_UART2_CTS_B__ECSPI3_MOSI 0x100b1 /* MOSI*/ MX6UL_PAD_UART2_RX_DATA__ECSPI3_SCLK 0x100b1 /* CLK*/ MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20 0x100b0 /* CS*/ >; };

因为icm20608@0 节点中reg=<0>; 使用片选cs-gpios 第0个。
cs-gpio 改为 cs-gpios