CR_REG1
r = zd_ioread32_locked(chip, &tmp, CR_REG1);
r = zd_iowrite32_locked(chip, tmp, CR_REG1);
r = zd_ioread32_locked(chip, &tmp, CR_REG1);
r = zd_iowrite32_locked(chip, tmp, CR_REG1);
{ CR_REG1, 0xa4 },