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How to remapped WEIM CS address space in Linux

Question asked by Heng Yew Lim on Aug 14, 2016
Latest reply on Aug 15, 2016 by Heng Yew Lim

Hi,

 

I have a problem trying to remap WEIM CS physical address to virtual address in Linux 3.14.52.1.1.0.

I am using CS1 and split the WEIM address space to 32MB block each.

I tried using the IMX_IO_P2V(0x52000000) that remapped to 0xF9200000 and got a segmentation fault when trying to read it.

Do I need to setup the device tree in order to access this memory space.

I was able to access this memory space correctly in u-boot using the physical address.

 

HengYew

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