what does 'cbm-cfm' 'cbs-cfm' 'cbm-cfs' 'cbs-cfs' means?

Autonomous Machines Jetson & Embedded Systems Jetson TX2
#1

Hi friend.
I want to know the full spelling of the following abbreviation.

amixer -c tegrasndt186ref cget name='I2S2 codec master mode'

;type=ENUMERATED,access=rw------,values=1,items=5
;Item #0 'None'
;Item #1 'cbm-cfm'
;Item #2 'cbs-cfm'
;Item #3 'cbm-cfs'
;Item #4 'cbs-cfs'
;values=1

Could someone know these ? pleae help me. thanks.

#2

I think maybe the following are okay.
cbm: clock bit master
cbs: clock bit slave
cfm: clock frame master
cfs: clock frame slave

But the jetson-tx2 tegra only support two modes,
#1 cbm-cfm ：clock bit master(BCLK),clock frame master (LRCLK)
#4 cbs-cfs ：clock bit slave(BCLK),clock frame slave (LRCLK)

does the clock frame mean LRCLK ??

#3

Hi 1811543668,

Please refer to https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fasoc_driver.html

#4

Dear kayccc，
The document you supplied does not explain it clearly.

Could you tell the full-spelling directly ? thank you.

#5

The documentation does not yet provide information on this and other related topics.