SUN4I_REG_BUF2_ADDR
writel((id >> 13) & 0xFF, priv->base + SUN4I_REG_BUF2_ADDR);
writel((id << 5) & 0xE0, priv->base + SUN4I_REG_BUF2_ADDR);
(readl(priv->base + SUN4I_REG_BUF2_ADDR) << 13) |
((readl(priv->base + SUN4I_REG_BUF2_ADDR) >> 5) & 0x7);