CER
i2s_write_reg(dev->i2s_base, CER, 1);
i2s_write_reg(dev->i2s_base, CER, 0);
writel(1, kmb_i2s->i2s_base + CER);
writel(0, kmb_i2s->i2s_base + CER);
writel(0, kmb_i2s->i2s_base + CER);
writel(0, kmb_i2s->i2s_base + CER);