f_per            1160 drivers/iio/adc/at91-sama5d2_adc.c 	unsigned f_per, prescal, startup, mr;
f_per            1162 drivers/iio/adc/at91-sama5d2_adc.c 	f_per = clk_get_rate(st->per_clk);
f_per            1163 drivers/iio/adc/at91-sama5d2_adc.c 	prescal = (f_per / (2 * freq)) - 1;