No sound card detected on Raspberry Pi 3

[zbqv]

I have just install Archlinux Arm on RPi3, and do the update as $this->bbcode_second_pass_code('', 'pacman -Syu')
But it cannot detect any sound card, when I run 'lsmod', there is nothing looks like a sound card.
$this->bbcode_second_pass_code('', '
[alarm@alarm ~]$ lsmod
Module Size Used by
vc4 121966 0
drm_kms_helper 174905 2 vc4
drm 402202 3 vc4,drm_kms_helper
smsc95xx 33984 0
usbnet 41233 1 smsc95xx
syscopyarea 3347 1 drm_kms_helper
mii 7855 2 usbnet,smsc95xx
sysfillrect 4385 1 drm_kms_helper
sysimgblt 2743 1 drm_kms_helper
fb_sys_fops 2094 1 drm_kms_helper
i2c_bcm2835 5985 0
pwm_bcm2835 4114 0
bcm2835_wdt 5178 0
')
I have serach for lots of methods, but no one works out. Is there any way to enable the sound card?

[WarheadsSE]

What cannot detect a sound card? What specific system / program / etc. Output that points out the problem would be very helpful.