MTK_FE_LINK_DOWN_P
val = mtk_r32(eth, MTK_FE_GLO_CFG(i)) | MTK_FE_LINK_DOWN_P(PSE_PPE0_PORT);
val |= MTK_FE_LINK_DOWN_P(PSE_PPE1_PORT);
val |= MTK_FE_LINK_DOWN_P(PSE_PPE2_PORT);
val = mtk_r32(eth, MTK_FE_GLO_CFG(i)) & ~MTK_FE_LINK_DOWN_P(PSE_PPE0_PORT);
val &= ~MTK_FE_LINK_DOWN_P(PSE_PPE1_PORT);
val &= ~MTK_FE_LINK_DOWN_P(PSE_PPE2_PORT);