用processors.wiki.ti.com/.../AM335x_PWM_Driver's_Guide里面的方法配置的内核
可是在/sys/class/pwm/里面也没有内容啊
其他的/sys/class/dma或者gpio什么的都有相应 的配置
不是说TI的配置都很齐全吗?我看了下设备树里面也有关于pwm的描述啊,
是不是需要我自己写pwm的驱动?
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