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楼主 # 2024-03-25 10:10:54

a06041114
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注册时间: 2021-01-18
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T113的PWM出错

root@TinaLinux:/sys/devices/platform/soc@3000000/2000c00.pwm/pwm/pwmchip0# ls
device                power                 unexport
export                subsystem             waiting_for_supplier
npwm                  uevent
root@TinaLinux:/sys/devices/platform/soc@3000000/2000c00.pwm/pwm/pwmchip0# echo
3 > export
root@TinaLinux:/sys/devices/platform/soc@3000000/2000c00.pwm/pwm/pwmchip0# cd pw
root@TinaLinux:/sys/devices/platform/soc@3000000/2000c00.pwm/pwm/pwmchip0/pwm3# echo 1 > enable
[  296.587997] sunxi_pwm_enable_dual: can't parse pwm device
sh: write error: No such device

如上所示,使能PWM时,提示 sunxi_pwm_enable_dual: can't parse pwm device
sh: write error: No such device
请问这个是啥原因,设备树和内核都按照文档修改了

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