hey,
How to modify the value of AWCACHE [3:0] and ARCACHE[3:0] in AXI?
in baremental driver ,the default value of AWCACHE [3:0] and ARCACHE[3:0] is 0x00,
but in linux driver ,the default value of AWCACHE [3:0] and ARCACHE[3:0] is 0x01,
can anybody tell me how to modify the value to 0x00 in linux driver?
thanks so much!
To add to the JD's comment.
For most Cortex processors, when the MMU/MPU is enabled the values of AxCACHE are derived from the type setting (Normal/Device) and for Normal regions the outer cacheability attribute. For example, on the Cortex-A53:
ARM Cortex-A53 MPCore Processor Technical Reference Manual: 7.5. Additional memory attributes