SCR_LOW_POWER
mask |= SCR_LOW_POWER;
scr = SCR_LOW_POWER | SCR_TXSEL_OFF;
mask = SCR_LOW_POWER | SCR_TXSEL_MASK;
regmap_update_bits(regmap, REG_SPDIF_SCR, SCR_LOW_POWER, 0);
SCR_LOW_POWER, SCR_LOW_POWER);