LIMIT_SHIFT
freq >>= LIMIT_SHIFT;
r = accinv * b * (uiinv >> LIMIT_SHIFT);
static const int LIMIT_SHIFT = 6; /* Limit numeric range into 31 bits */
if (mipi_freq >> LIMIT_SHIFT <= 0)
r = accinv * coeffs[1] * (500000000 >> LIMIT_SHIFT);
r /= mipi_freq >> LIMIT_SHIFT;