GRCBASE_MCP
REG_WR(sc, GRCBASE_MCP + 0x9c, val);
val = REG_RD(sc, GRCBASE_MCP + 0x9c);
REG_WR(sc, GRCBASE_MCP + 0x9c, 0);
p_info->public_base |= GRCBASE_MCP;