On Wed, 2009-04-29 at 11:47 +0530, Azam Ansari wrote:
> Hi Steve,
>
> After looking into the PINMUX I found that the pinmux setting is being
> done when I call
>
> board_setup_psc(DAVINCI_GPSC_ARMDOMAIN, DAVINCI_LPSC_McBSP0, 1);
>
> This does the PINMUX settings for McBSP0.
>
> I found two patchs on the mailing list for McBSP0 setup...
> tx_swap.patch
> rx_swap.patch
> http://www.mail-archive.com/davinci-linux-open-source@linux.davincidsp.com/msg10133.html
>
>
> I tried applying the patches but the patches are not getting applied.
> So I manually checked the patch and added it.
>
> After that I get following error for audio recording "frame sync not
> detected". It seems that the frames are not getting detected.
>
> Also I found ASP1 uses CLKS pin for clock. So I changed it to use CLKR
> pin for ASP0 by setting SCLKME bit in PCR. I found few code in mcbsp.c
> and davinci-audio-dma-intf.c file that is only for ASP1 and not for
> ASP0. So I modified it too but still recording is not working.
> Example:
> OLD:
> if (!cpu_is_davinci_dm355())
> davinci_set_dma_dest_params(mcbsp[id].dma_tx_lch,
> (unsigned long) (DAVINCI_MCBSP_BASE + 4), 0,
> 0);
> else
> davinci_set_dma_dest_params(mcbsp[id].dma_tx_lch,
> (unsigned long) (DAVINCI_MCBSP1_BASE + 4), 0,
> 0);
>
> NEW:
> if (cpu_is_davinci_dm355())
> davinci_set_dma_dest_params(mcbsp[id].dma_tx_lch,
> (unsigned long) (DAVINCI_MCBSP_BASE + 4), 0,
> 0);
> else
> davinci_set_dma_dest_params(mcbsp[id].dma_tx_lch,
> (unsigned long) (DAVINCI_MCBSP1_BASE + 4), 0,
> 0);
>
> Please help...
>
Were you getting frame sync before the change? If you were, the pinmux
is probably setting up correctly. I did a quick look through the code,
and I noticed in function
audio_aic33_init in sound/oss/dm644x/davinci-audio-aic33.c contains
...
if (cpu_is_davinci_dm355()) {
input_stream.dma_dev = DM355_DMA_MCBSP1_RX;
output_stream.dma_dev = DM355_DMA_MCBSP1_TX;
...
May want to try
if (cpu_is_davinci_dm355()) {
input_stream.dma_dev = DM355_DMA_MCBSP0_RX;
output_stream.dma_dev = DM355_DMA_MCBSP0_TX;
Also, file arch/arm/mach-davinci/mcbsp.c function
davinci_mcbsp_recv_buffer may want to try replacing
if (!cpu_is_davinci_dm355())
davinci_set_dma_src_params(mcbsp[id].dma_rx_lch,
(unsigned long) DAVINCI_MCBSP_BASE, 0,
0);
else
davinci_set_dma_src_params(mcbsp[id].dma_rx_lch,
(unsigned long) DAVINCI_MCBSP1_BASE, 0,
0);
with just
davinci_set_dma_src_params(mcbsp[id].dma_rx_lch,
(unsigned long) DAVINCI_MCBSP_BASE, 0,
0);
Regards,
Steve
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