Did you know that there was a fusion of Onkyo and Pioneer in 2015.
Most of the Pioneer AV Receivers after 2015 (exactly since April 2016) are supported by the Onkyo Binding.
There is no need to update Pioneer AVR binding with models after 2015 (since April 2016). Instead the Onkyo binding documentation should be updated.
Did you try out Onkyo binding?
See also here:
SC-LX501 (2017 model)
VSX-S520 (Model 2016)
VSX-831
Pioneer VSX-1131 (identical to VSX-531 and VSX-831).
