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1What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_resolution2KernelVersion: 3.4.03Contact: linux-iio@vger.kernel.org4Description:5 Stores channel Y frequency resolution/channel spacing in Hz.6 The value given directly influences the MODULUS used by7 the fractional-N PLL. It is assumed that the algorithm8 that is used to compute the various dividers, is able to9 generate proper values for multiples of channel spacing.10 11What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_refin_frequency12KernelVersion: 3.4.013Contact: linux-iio@vger.kernel.org14Description:15 Sets channel Y REFin frequency in Hz. In some clock chained16 applications, the reference frequency used by the PLL may17 change during runtime. This attribute allows the user to18 adjust the reference frequency accordingly.19 The value written has no effect until out_altvoltageY_frequency20 is updated. Consider to use out_altvoltageY_powerdown to power21 down the PLL and its RFOut buffers during REFin changes.22