====== Kernel ======

[[https://github.com/frank-w/BPI-R64-bsp/blob/390546b0df05998a293566a615fda47c936877c8/Makefile#L53|make-command]]

  * https://github.com/BPI-SINOVOIP/BPI-R64-bsp
  * [[https://github.com/frank-w/BPI-R2-4.14/tree/4.19-r64-main|4.19]] / [[https://github.com/frank-w/BPI-R2-4.14/tree/4.19-r64-main|5.4-rc]]
    * both switches working, currently no dsa-driver available
    * bluetooth untested (was working in 4.19)
    * no wifi driver available
===== debug =====

  dev_info(gsw->dev,"%s:%d 0x%x",__FUNCTION__,__LINE__,val);
  printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);

  #define onelinedbg(dev,fmt,...) {if (dev) dev_info(dev,"%s:%d " fmt,__FUNCTION__,__LINE__,##__VA_ARGS__);else printk(KERN_INFO "%s:%d " fmt,__FUNCTION__,__LINE__,##__VA_ARGS__);}
  
makefile:

  $(info $$var is [${var}])