A64_MIC1AMPEN
a64_acodec_pr_set_clear(sc, A64_MIC1_CTRL, A64_MIC1AMPEN, 0);
a64_acodec_pr_set_clear(sc, A64_MIC1_CTRL, 0, A64_MIC1AMPEN);
mc->un.ord = !!(a64_acodec_pr_read(sc, A64_MIC1_CTRL) & A64_MIC1AMPEN);