VENC_VDAC_SETTING
priv->io_base + _REG(VENC_VDAC_SETTING));
writel_relaxed(0, priv->io_base + _REG(VENC_VDAC_SETTING));
writel_relaxed(0xff, priv->io_base + _REG(VENC_VDAC_SETTING));