Hi Steve,
I have tried setting PINMUX3 to 0x3F as well as 0x00. In both the cases I
get the same error "frame sync not detected"
Below is the code snippet where I get this error:
pcrtemp = PCR;
/*Enable the transmitters pins as GPIO*/
PCR = PCR | RIOENABLE;
/*Wait for the first frame sync*/
/*Loop count assumes CPU clock is around 300MHZ*/
/* Start the sample generator */
// w = DAVINCI_MCBSP_READ(io_base, SPCR2);
// DAVINCI_MCBSP_WRITE(io_base, SPCR2, w | (1 << 6));
/* Enable receiver */
// w = DAVINCI_MCBSP_READ(io_base, SPCR1);
//DAVINCI_MCBSP_WRITE(io_base, SPCR1, w | 1);
// DAVINCI_MCBSP_WRITE(io_base, SPCR1, w | RRST);
// udelay(100);
/* Start frame sync */
// w = DAVINCI_MCBSP_READ(io_base, SPCR2);
// DAVINCI_MCBSP_WRITE(io_base, SPCR2, w | (1 << 7));
for (i = 0; (i < 5000) && (PCR&FSRPOLARITY); i++);
for (i = 0; (i < 5000) && (!(PCR&FSRPOLARITY)); i++);
/*Disabe the transmitter pins as GPIO*/
PCR = PCR & ~RIOENABLE;
/*Restore the PCR initial value*/
PCR = pcrtemp;
/*Enable the transmitter */
if (i < 5000) {
SPCR = SPCR | RRESET;
/*Restore the PCR initial value*/
} else {
printk(KERN_INFO "frame sync not detected\n");
<<<<<<<<<<<<< error >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
spin_unlock_irqrestore(&rrstlock, flags);
return;
}
If I dont get the frame sync then in that case what should I check?
Thanks,
Azam.
On Thu, Apr 30, 2009 at 5:02 AM, Steve Chen <sc...@mvista.com> wrote:
> On Wed, 2009-04-29 at 23:57 +0530, Azam Ansari wrote:
> > Hi Steve,
> >
> > >>Were you getting frame sync before the change?
> >
> > No. I was not getting frame sync before the change either. Does it
> > mean that PINMUX setup is not correct?
> > Currently is set PINMUX3 = 0x3F.
>
> Did you try the suggestions in my previous e-mail about updating
> mux_cfg.c which will make pinmux3=0.
>
> Regards,
>
> Steve
>
> >
> >
> >
> > >> 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);
> >
> > I am using DM355 board. I have already modified the change suggest but
> > it is not working.
> >
> > Any thing else that I need to check?
> >
> > Thanks,
> > Azam.
> >
>
>
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