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今天在按键驱动中增加printk(KERN_INFO "gpio_keys_gpio_isr()\n");在驱动加载阶段可以输出调试信息,但驱动加载起来后的信息,在串口端看不到输出信息 在kernel/ /* We show everything that is MORE important tha 阅读全文
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来之\kernel\Documentation\devicetree\usage-model.txtLinux and the Device Tree-------------------------The Linux usage model for device tree dataAuthor:... 阅读全文
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1.CONFIG_OF在一些驱动中经常看到#ifdef CONFIG_OF,这里的OF是Open Firmware。Open Firmware. This was invented long time ago when Apple was producing laptops based on Po... 阅读全文
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1.TLMMMSM TLMM pinmux controller,Qualcomm MSM integrates a GPIO and Pin mux/config hardware, (TOP Level Mode Multiplexer in short TLMM). It controls ... 阅读全文