• Kumar Gala's avatar
    powerpc/8xxx: Update PCI outbound window addresses for 36-bit configs · 558ab308
    Kumar Gala authored
    In these configuration we expect to have large amounts of memory (> 4G)
    and thus will bounce via swiotlb some region of PCI address space.
    
    The outbound windows were wasting 512M of address space by leaving a
    gap between the top of the outbound window and the 4G boundary.  By
    moving the top of the outbound window up to the 4G boundary we can
    reclaim the vast majority of the 512M (minus space needed for PEXCSRBAR)
    and thus reduces the amount of memory we have to bounce.
    Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
    558ab308
mpc8641_hpcn_36b.dts 13.6 KB