Hi All-
I am new to this website and didn't find a better place post this query. I am using OMAP4470 (Android) and connected a cellular modem pcm audio to the McBSP2 line. In my case I need to make the McBSP2 line as TDM slave mode and modem needs to be the master. I also need to make some changes to polarity, words length etc. I did develop same on Windows Mobile too and there I can set all these registers using registry file. I am struggle to make similar changes on Android side to McBSP2 line.
Additionally, is there a configuration file(similar to reg file on Windows mobile side)on Android for making below changes?
Below is the code reference that I made on WM which works fine.
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\MCBSP2\Profile\TDMSlave]
"PhaseMode"=dword:0 ; XCR2.XPHASE,RCR2.RPHASE: Either 0 (single) or 1 (dual)
"WordsPerFrame"=dword:1 ; XCR1.XFRLEN1,RCR1.RFRLEN1, XCR2.XFRLEN2, RCR2.RFRLEN2: 1 - 128 words "WordLength"=dword:10 ; RCR1.RWDLEN1, XCR1.XWDLEN1: 8, 12, 16, 20, 24, or 32 bits
"WordLength2"=dword:10 ; RCR2.RWDLEN2,XCR2.XWDLEN2: 8, 12, 16, 20, 24, or 32 bits
"DataDelayRx"=dword:2 ; RCR2.RDATDLY:0, 1, or 2 bits
"DataDelayTx"=dword:0
"JustificationMode"=dword:0 ; SPCR.RJUST: 0 (right, zero fill), 1 (right, sign fill), or 2 (left)
"FifoThresholdTx"=dword:0 ; TX fifo max value can be up to 0x7f (128 - 1) - 0
"FifoThresholdRx"=dword:0 ; RX fifo max value can be up to 0x7f (128 - 1) - 0
;Slave mode configuration
"FrameSyncSourceTx"=dword:0 ; PCR.FSXM, SRGR2.FSGM: 0 (ext), 2 (xmit), or 3 (int SRG)
"ClockModeTx"=dword:0 ; PRC.CLKXM: 0 (external) or 1 (internal - SRG)
"FrameSyncSourceRx"=dword:0 ; PCR.FSRM: Either 0 (external) or 1 (internal)
"ClockModeRx"=dword:0 ; PRC.CLKRM: 0 (external), 1 (SRG), 2 (CLKXM - DLB mode)
"Frequency"=dword:1F40 ; target frequency is 8khz "ClockPolarityTx"=dword:1 ; PCR.CLKXP: 0 (rising edge) or 1 (falling edge) "ClockPolarityRx"=dword:1 ; PCR.CLKRP: 0 (falling edge) or 1 (rising edge) "FrameSyncPolarityTx"=dword:0 ; PCR.FSXP: 0 (active high), 1 (active low) "FrameSyncPolarityRx"=dword:0 ; PCR.FSRP: 0 (active high), 1 (active low) "ReverseModeTx"=dword:0 ; XCR2.XREVERSE: 0 (MSB first) or 1 (LSB first) "ReverseModeRx"=dword:0 ; RCR2.RREVERSE: 0 (MSB first) or 1 (LSB first)
"LoopbackMode"=dword:0 ; SPCR1.ALB: 0 (disabled) or 1 (loopback) "ClockSourceSrg"=dword:2 ; 0 (rising CLKS), 1, (falling CLKS), 2 (MCBSP_ICLK), 3 (CLKR), or 4 (CLKX) "ClockDividerSrg"=dword:80 ; SRGR1.CLKGDV: 1-255 "FrameWidthSrg"=dword:1 ; SRGR1.FWID: 1-256 "ClockResyncSrg"=dword:0 ; SRGR2.GSYNC: 0 (no resync) or 1 (resync) "PartitionMode"=dword:0 ; 0-> 2-partition mode, 1-> 8-partition mode "NumOfActiveTxChannels"=dword:0 ; Number of TX channels to be enabled "EnableMcBSPTxChannels"=multi_sz:"0" "NumOfActiveRxChannels"=dword:0 ; Number of RX channels to be enabled "EnableMcBSPRxChannels"=multi_sz:"0"
