Memory device in physical memory map based on OF description

modulename: physmap_of.ko

configname: CONFIG_MTD_PHYSMAP_OF

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Mapping drivers for chip access
└─>Memory device in physical memory map based on OF description
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
This provides a 'mapping' driver which allows the NOR Flash, ROM
and RAM driver code to communicate with chips which are mapped
physically into the CPU's memory. The mapping description here is
taken from OF device tree.

source code: