CH_PWR_CTRL1
val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) & ~FLD_CH_SEL;
val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) | FLD_CH_SEL;
cx23885_flatiron_write(dev, CH_PWR_CTRL1, val);
CH_PWR_CTRL1, 1, &value, 1);
CH_PWR_CTRL1, 1, value, 1);
CH_PWR_CTRL1, 1, 0x80, 1);