XADC_MAX_SAMPLERATE
if (clk_rate / div / 26 > XADC_MAX_SAMPLERATE)
if (ret > XADC_MAX_SAMPLERATE) {
ret = xadc_write_samplerate(xadc, XADC_MAX_SAMPLERATE);
if (val > XADC_MAX_SAMPLERATE)
val = XADC_MAX_SAMPLERATE;