I2S0CLKEN
x |= I2S0CLKEN | I2S0EN;
x &= ~I2S0CLKEN; /* XXX I2S0 */
x |= I2S0CLKEN;
x &= ~I2S0CLKEN; /* XXX I2S0 */
x |= I2S0CLKEN;
fcreg |= I2S0CLKEN | I2S0EN;