drm/i915/intel_uncore.c:1197: Unclaimed write to register 0x20a8

[Jun Ebihara <jun%soum.co.jp@localhost>]

with Dynabook R63/P
cpu0: Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz, id 0x306d4

dmesg:
https://github.com/ebijun/NetBSD/blob/master/dmesg/amd64/TOSHIBA_dynabook_R63P

10.99.4 audio output failed:
Warning: /home/jun/Build/src/sys/external/bsd/drm2/dist/drm/i915/intel_uncore.c:1197: Unclaimed write to register 0x20a8
warning: /home/jun/Build/src/sys/external/bsd/drm2/dist/drm/i915/intel_uncore.c:1197: Unclaimed write to register 0x4432c
audio0(hdafg0): audio_write: device timeout, seq=0, usrbuf=65268/H65268, outbuf=1920/1920
audio0(hdafg0): audio_write: device timeout, seq=0, usrbuf=65268/H65268, outbuf=1920/1920

need some cares like
https://lore.kernel.org/all/87oagmk9st.fsf%intel.com@localhost/T/
?
--
Jun Ebihara