HDMI Audio output on Pine64 with Fedora 35

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Hello,

My Pine64 has served my daughter well for her online courses during the pandemic, loaded with Armbian. As someone more into Fedora, I'm always looking for opportunity to switch on this cheap SBC.
It hasn't been successful until Fedora 35 XFCE AArch64. With the help of arm-image-installer, the recent AArch64 booted and runs quite well, with one exception: no Sound from HDMI port.
There's audio from 3.5mm jack thus I'm pretty sure the player, codec and sound server are all right.

I tried to poke around the XFCE sound server widget but it seems HDMI wasn't recognized as a device under Fedora 35. Below are output from Fedora running updated kernel 5.14.14:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sun50ia64audio [sun50i-a64-audio], device 0: 1c22c00.dai-sun8i-codec-aif1 sun8i-codec-aif1-0 [1c22c00.dai-sun8i-codec-aif1 sun8i-codec-aif1-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ lsmod
Module                  Size  Used by
snd_seq_dummy          16384  0
snd_hrtimer            20480  1
nft_fib_inet           16384  1
nft_fib_ipv4           16384  1 nft_fib_inet
nft_fib_ipv6           16384  1 nft_fib_inet
nft_fib                16384  3 nft_fib_ipv6,nft_fib_ipv4,nft_fib_inet
nft_reject_inet        16384  6
nf_reject_ipv4         16384  1 nft_reject_inet
nf_reject_ipv6         20480  1 nft_reject_inet
nft_reject             16384  1 nft_reject_inet
nft_ct                 24576  11
nft_chain_nat          16384  2
nf_nat                 49152  1 nft_chain_nat
nf_conntrack          176128  2 nf_nat,nft_ct
nf_defrag_ipv6         24576  1 nf_conntrack
nf_defrag_ipv4         16384  1 nf_conntrack
rfkill                 40960  1
ip_set                 57344  0
nf_tables             217088  204 nft_ct,nft_reject_inet,nft_fib_ipv6,nft_fib_ipv4,nft_chain_nat,nft_reject,nft_fib,nft_fib_inet
nfnetlink              20480  3 nf_tables,ip_set
qrtr                   28672  4
ns                     32768  1 qrtr
sunrpc                626688  1
vfat                   28672  1
fat                    94208  1 vfat
snd_soc_hdmi_codec     24576  0
dw_hdmi_cec            16384  0
dw_hdmi_i2s_audio      16384  0
sun50i_codec_analog    36864  1
snd_soc_simple_card    24576  2
sun4i_i2s              24576  2
snd_soc_simple_card_utils    28672  1 snd_soc_simple_card
axp20x_adc             20480  0
sun8i_adda_pr_regmap    16384  1 sun50i_codec_analog
axp20x_pek             16384  0
sun8i_codec            49152  1
snd_soc_core          311296  6 sun4i_i2s,snd_soc_hdmi_codec,sun50i_codec_analog,sun8i_codec,snd_soc_simple_card_utils,snd_soc_simple_card
snd_compress           32768  1 snd_soc_core
ac97_bus               16384  1 snd_soc_core
snd_pcm_dmaengine      20480  1 snd_soc_core
snd_seq                98304  7 snd_seq_dummy
snd_seq_device         20480  1 snd_seq
snd_pcm               143360  6 sun4i_i2s,snd_soc_hdmi_codec,snd_compress,sun8i_codec,snd_soc_core,snd_pcm_dmaengine
joydev                 32768  0
sun8i_rotate           28672  0
sun8i_di               28672  0
sunxi_cedrus           53248  0
sun8i_drm_hdmi         24576  0
v4l2_mem2mem           45056  3 sunxi_cedrus,sun8i_rotate,sun8i_di
dw_hdmi                53248  2 sun8i_drm_hdmi,dw_hdmi_i2s_audio
videobuf2_dma_contig    24576  3 sunxi_cedrus,sun8i_rotate,sun8i_di
videobuf2_memops       20480  1 videobuf2_dma_contig
snd_timer              45056  3 snd_seq,snd_hrtimer,snd_pcm
snd                   114688  13 snd_seq,snd_seq_device,snd_soc_hdmi_codec,snd_timer,snd_compress,snd_soc_core,snd_pcm
videobuf2_v4l2         32768  4 sunxi_cedrus,sun8i_rotate,sun8i_di,v4l2_mem2mem
soundcore              20480  1 snd
sun8i_thermal          16384  0
videobuf2_common       69632  7 sunxi_cedrus,sun8i_rotate,videobuf2_dma_contig,videobuf2_v4l2,sun8i_di,v4l2_mem2mem,videobuf2_memops
nvmem_sunxi_sid        16384  1
videodev              278528  6 sunxi_cedrus,sun8i_rotate,videobuf2_v4l2,sun8i_di,videobuf2_common,v4l2_mem2mem
mc                     65536  5 sunxi_cedrus,videodev,videobuf2_v4l2,videobuf2_common,v4l2_mem2mem
sun8i_mixer            45056  0
cpufreq_dt             20480  0
fuse                  167936  1
zram                   32768  2
ip_tables              32768  0
mmc_block              53248  3
axp20x_battery         16384  0
axp20x_ac_power        16384  0
industrialio           94208  3 axp20x_battery,axp20x_ac_power,axp20x_adc
axp20x_regulator       49152  6
pinctrl_axp209         16384  0
axp20x_rsb             16384  0
dwmac_sun8i            28672  0
stmmac_platform        24576  1 dwmac_sun8i
stmmac                249856  2 dwmac_sun8i,stmmac_platform
pcs_xpcs               24576  1 stmmac
phylink                53248  1 stmmac
crct10dif_ce           20480  1
lima                   69632  2
display_connector      20480  0
sunxi                  24576  0
ghash_ce               24576  0
phy_generic            20480  2 sunxi
sunxi_rsb              24576  1 axp20x_rsb
musb_hdrc             139264  1 sunxi
des_generic            16384  0
libdes                 24576  1 des_generic
gpu_sched              49152  1 lima
ohci_platform          16384  0
mdio_mux               16384  1 dwmac_sun8i
sunxi_wdt              20480  0
sun4i_drm              20480  6
sun4i_frontend         20480  1 sun4i_drm
i2c_mv64xxx            24576  0
sun4i_tcon             40960  1 sun4i_drm
sun8i_tcon_top         20480  3 sun8i_drm_hdmi,sun4i_tcon,sun4i_drm
drm_kms_helper        294912  8 sun8i_mixer,sun8i_drm_hdmi,sun4i_frontend,sun4i_tcon,sun4i_drm,dw_hdmi
ohci_hcd               61440  1 ohci_platform
sunxi_mmc              32768  0
phy_sun4i_usb          28672  6 sunxi
udc_core               69632  1 musb_hdrc
sun8i_ce               49152  0
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
sysimgblt              16384  1 drm_kms_helper
fb_sys_fops            20480  1 drm_kms_helper
cec                    73728  3 drm_kms_helper,dw_hdmi_cec,dw_hdmi
sun6i_dma              36864  2
ehci_platform          20480  0
drm                   634880  15 gpu_sched,sun8i_mixer,drm_kms_helper,display_connector,sun8i_drm_hdmi,lima,sun4i_frontend,sun4i_tcon,sun4i_drm,dw_hdmi
aes_neon_bs            32768  0

In comparison, the aplay and lsmod output from Armbian running mainline kernel 5.10.16:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sun50ia64audio [sun50i-a64-audio], device 0: 1c22c00.dai-sun8i-codec-aif1 sun8i-codec-aif1-0 [1c22c00.dai-sun8i-codec-aif1 sun8i-codec-aif1-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: sun50ia64hdmi [sun50i-a64-hdmi], device 0: 1c22800.i2s-i2s-hifi i2s-hifi-0 [1c22800.i2s-i2s-hifi i2s-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ lsmod
Module                  Size  Used by
fuse                  122880  3
overlay               114688  2
bnep                   28672  2
snd_soc_hdmi_codec     20480  1
axp20x_ac_power        16384  0
axp20x_battery         16384  0
hci_uart              126976  0
axp20x_adc             20480  0
btqca                  20480  1 hci_uart
btrtl                  24576  1 hci_uart
btbcm                  24576  1 hci_uart
btintel                24576  1 hci_uart
bluetooth             577536  13 btrtl,btqca,btintel,hci_uart,btbcm,bnep
ecdh_generic           16384  1 bluetooth
dw_hdmi_i2s_audio      16384  0
dw_hdmi_cec            16384  0
rfkill                 28672  4 bluetooth
hid_multitouch         28672  0
ecc                    28672  1 ecdh_generic
lima                   57344  11
gpu_sched              32768  1 lima
joydev                 32768  0
sun4i_gpadc_iio        24576  0
industrialio           65536  4 axp20x_battery,sun4i_gpadc_iio,axp20x_ac_power,axp20x_adc
sun4i_i2s              24576  4
sunxi_cedrus           40960  0
videobuf2_dma_contig    24576  1 sunxi_cedrus
v4l2_mem2mem           36864  1 sunxi_cedrus
videobuf2_memops       20480  1 videobuf2_dma_contig
videobuf2_v4l2         24576  2 sunxi_cedrus,v4l2_mem2mem
videobuf2_common       49152  3 sunxi_cedrus,videobuf2_v4l2,v4l2_mem2mem
videodev              237568  4 sunxi_cedrus,videobuf2_v4l2,videobuf2_common,v4l2_mem2mem
mc                     49152  5 sunxi_cedrus,videodev,videobuf2_v4l2,videobuf2_common,v4l2_mem2mem
display_connector      20480  0
snd_soc_simple_card    24576  0
snd_soc_simple_card_utils    24576  1 snd_soc_simple_card
zram                   32768  2
cpufreq_dt             20480  0
sch_fq_codel           24576  2
pinctrl_axp209         16384  0
realtek                24576  1
i2c_mv64xxx            24576  0
dwmac_sun8i            28672  0
mdio_mux               16384  1 dwmac_sun8i

Despite snd_soc_hdmi_codec being loaded in both systems, the Fedora 35 lacks the sound subdevice sun50ia64hdmi that presents under Armbian.
I had tried searching Pine64 and Armbian forums for clues. But the threads showing up are either several years ago on BSP kernel, or trying to get sound from 3.5mm jack port.
Much appreciated if someone here can point me in the right direction to further diagnose or solve this problem.
Kind regards,
Tommy
--
Take a Deep Breath out of Windows
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