RG_CSIXA_RESERVE
mtk_phy_update_field(base + MIPI_RX_ANA24_CSIXA, RG_CSIXA_RESERVE, 0x40);
mtk_phy_update_field(base + CSIXB_OFFSET + MIPI_RX_ANA24_CSIXA, RG_CSIXA_RESERVE, 0x40);