diff options
| -rw-r--r-- | hw/npu2.c | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -542,8 +542,10 @@ static void npu2_dn_fixup_gmb(struct dt_node *pd_dn, struct npu2_dev *ndev) assert(mem_dn); dt_add_property_cells(pd_dn, "memory-region", mem_dn->phandle); - gta = ((gpu_base >> 42) & 0x1) << 41; - gta |= ((gpu_base >> 45) & 0x3) << 42; + /* Coral mode address compression. This is documented in Figure 3.5 + * "P9->GPU RA Compression (Coral) of the NPU2 workbook". */ + gta = ((gpu_base >> 42) & 0x1) << 42; + gta |= ((gpu_base >> 45) & 0x3) << 43; gta |= ((gpu_base >> 49) & 0x3) << 45; gta |= gpu_base & ((1UL << 43) - 1); |