FSI_MSENP0
ret = opb_writel(aspeed, ctrl_base + FSI_MSENP0 + (4 * idx), reg);
opb_writel(aspeed, ctrl_base + FSI_MSENP0, reg);
rc = fsi_device_write(dev, FSI_MSENP0, ®, sizeof(reg));
rc = fsi_device_write(hub->upstream, FSI_MSENP0 + (4 * idx), ®, 4);