ITER
i2s_write_reg(dev->i2s_base, ITER, 1);
i2s_write_reg(dev->i2s_base, ITER, 0);
tx_enabled = readl(kmb_i2s->i2s_base + ITER);
writel(1, kmb_i2s->i2s_base + ITER);
writel(0, kmb_i2s->i2s_base + ITER);
writel(0, kmb_i2s->i2s_base + ITER);