SW_TAIL_TAG_ENABLE
ksz_cfg(dev, regs[S_TAIL_TAG_CTRL], masks[SW_TAIL_TAG_ENABLE], true);
[SW_TAIL_TAG_ENABLE] = BIT(0),
[SW_TAIL_TAG_ENABLE] = BIT(1),
[SW_TAIL_TAG_ENABLE] = BIT(6),
[SW_TAIL_TAG_ENABLE] = BIT(1),