Hi,all,
在使用am437x
开发板,sdk版本:
ti-processor-sdk-linux-am437x-evm-01.00.00.03
打算使用gpio模拟1 wire的驱动,编译了 w1-gpio.ko这个驱动,但在加载模块时出现错误信息
#insmod w1-gpio.ko[ 57.400063] of_get_named_gpiod_flags exited with status 0[ 57.402945] of_get_named_gpiod_flags: can't parse gpios property of node '/onewire@0[1]'使用gpio0_19作为模拟io, am437x-gp-evm.dts的修改如下
/ [ model = "TI AM437x GP EVM"; compatible = "ti,am437x-gp-evm","ti,am4372","ti,am43"; ........ bb_one_wire: onewire@0 [ compatible = "w1-gpio"; #address-cells = <1>; #size-cell = <0>; status = "okay"; /* Setup the pins */ pinctrl-names = "default"; pinctrl-0 = <&bb_w1_pins>; /* Define the new one-wire master as based on w1-gpio * and using GPIO0_19 */ gpios = <&gpio0 19 0>; ]; ]; &am43xx_pinmux [ pinctrl-names = "default", "sleep"; pinctrl-0 = <&clkout2_pin>; .......... /*gpio0_19 for onewire use*/ bb_w1_pins: pinmux_bb_w1_pins [ pinctrl-single,pins = <0x1a4 0x37>; ]; ];
估计是这个device tree修改上的问题,请帮忙!
谢谢!
Roy