tda1997x_cec_write
tda1997x_cec_write(sd, REG_PWR_CONTROL & 0xff, 0x04);
tda1997x_cec_write(sd, REG_OSC_DIVIDER & 0xff, 0x03);
tda1997x_cec_write(sd, REG_EN_OSC_PERIOD_LSB & 0xff, 0xa0);
tda1997x_cec_write(sd, REG_CONTROL & 0xff, reg);