Hi, all. I used MPC8555CDS.
How to access DMA registers of MPC8555 ? I can't read/write these registers on LINUX. I called request_mem_region( 0xE0000000, LENGTH, ... ) in my device driver. When I set LENGTH 0x21100, this function call succeded. But When I set LENGTH 0x21200, this function call failed. "e0021100-e002117f : fsl-dma0" is part of /proc/iomem log. I guess my driver can't access fsl-dma0 area. But fsl-dma0 area encompassed DMA registers I want to access. I must find remove simbols like fsl-dma0. Or I must find how to use modules encompass fsl-dma0. Counld you give me some help/hint/tips ? regards, Shinji
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