On Sun, Feb 17, 2019 at 1:08 AM Yong Wu <yong.wu@xxxxxxxxxxxx> wrote: > > The M4U IP blocks in mt8183 is MediaTek's generation2 M4U which use > the ARM Short-descriptor like mt8173, and most of the HW registers > are the same. > > Here list main differences between mt8183 and mt8173/mt2712: > 1) mt8183 has only one M4U HW like mt8173 while mt2712 has two. > 2) mt8183 don't have the "bclk" clock, it use the EMI clock instead. > 3) mt8183 can support the dram over 4GB, but it doesn't call this "4GB > mode". > 4) mt8183 pgtable base register(0x0) extend bit[1:0] which represent > the bit[33:32] in the physical address of the pgtable base, But the > standard ttbr0[1] means the S bit which is enabled defaultly, Hence, > we add a mask. > 5) mt8183 HW has a GALS modules, SMI should enable "has_gals" support. > 6) mt8183 need reset_axi like mt8173. > 7) the larb-id in smi-common is remapped. M4U should add its larbid_remap. > > Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx> Reviewed-by: Evan Green <evgreen@xxxxxxxxxxxx>
