MTK_PDMA_LRO_CTRL_DW0
mtk_w32(eth, lro_ctrl_dw0, MTK_PDMA_LRO_CTRL_DW0);
mtk_w32(eth, MTK_LRO_RING_RELINQUISH_REQ, MTK_PDMA_LRO_CTRL_DW0);
val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0);
mtk_w32(eth, 0, MTK_PDMA_LRO_CTRL_DW0);