Rk3399 platform development series explanation (Introduction to kernel) 1.52. Call stack analysis of probe function in platform

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We know that when the hardware first came up ,bootloader Let the kernel select the appropriate by passing parameters dts,kernel After receiving the correct dts when , Will put each appropriate node To register （platform_device_register）, And hang it on bus On , When the underlying driver registers （platform_driver_register）, Will first traverse bus Upper device（bus_for_each_dev）, And then through dts Medium compatible Match （platform_match In the implementation of ,dts Matching is just one way of matching ）, If I found driver and device Same name , well , We can execute what we need