On Wed, 27 Oct 2021 16:37:25 +0200, Alex Bee wrote:

As stated in the schematics [1] and [2] P5 the APIO5 domain is supplied
by RK808-D Buck4, which in our case vcc1v8_codec - i.e. a 1.8 V regulator.

Currently only white noise comes from the ES8316's output, which - for
whatever reason - came up only after the the correct switch from i2s0_8ch_bus
to i2s0_2ch_bus for i2s0's pinctrl was done.

[...]

Applied, thanks!

[1/2] arm64: dts: rockchip: fix audio-supply for Rock Pi 4
      commit: 8240e87f16d17a9592c9d67857a3dcdbcb98f10d
[2/2] arm64: dts: rockchip: add interrupt and headphone-detection for Rock Pi4's audio codec
      commit: c681c6fcc5ddfa0492ca015b0bf325cd4881ce07

Best regards,
-- 
Heiko Stuebner [off-list ref]