* receiving data from mcbsp1 in master mode @ 2012-08-21 5:42 Andreas Kemnade 2012-08-21 13:42 ` Peter Ujfalusi 0 siblings, 1 reply; 5+ messages in thread From: Andreas Kemnade @ 2012-08-21 5:42 UTC (permalink / raw) To: linux-omap [-- Attachment #1: Type: text/plain, Size: 496 bytes --] Hi, I tried a couple of times with different kernels to use mcbsp1 of dm3730 in master mode (so that it sends out clocks). The result always is that I can send data out. but arecord gets no input. It waits for input but does not get anything, although clocks are generated, checked that with a scope. I even took a driver which works in master mode on another mcbsp and just changed the mcbsp number. What needs to be done to receive data from mcbsp1? Greetings Andreas Kemnade [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 198 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: receiving data from mcbsp1 in master mode 2012-08-21 5:42 receiving data from mcbsp1 in master mode Andreas Kemnade @ 2012-08-21 13:42 ` Peter Ujfalusi 2012-08-22 20:19 ` Andreas Kemnade 0 siblings, 1 reply; 5+ messages in thread From: Peter Ujfalusi @ 2012-08-21 13:42 UTC (permalink / raw) To: Andreas Kemnade; +Cc: linux-omap On 08/21/2012 08:42 AM, Andreas Kemnade wrote: > Hi, > > I tried a couple of times with different kernels to use mcbsp1 of dm3730 > in master mode (so that it sends out clocks). > The result always is that I can send data out. but arecord gets no input. It > waits for input but does not get anything, although clocks are generated, > checked that with a scope. > > I even took a driver which works in master mode on another mcbsp and just changed > the mcbsp number. > What needs to be done to receive data from mcbsp1? You should check the PIN mux configuration of McBSP1 FSR/CLKR pins. McBSP1 on dm3730 have 6 pin configuration. I think the capture should work fine if you select the FSX as FSR source, and CLKX as CLKR source. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: receiving data from mcbsp1 in master mode 2012-08-21 13:42 ` Peter Ujfalusi @ 2012-08-22 20:19 ` Andreas Kemnade 2012-08-23 8:47 ` Peter Ujfalusi 0 siblings, 1 reply; 5+ messages in thread From: Andreas Kemnade @ 2012-08-22 20:19 UTC (permalink / raw) To: Peter Ujfalusi; +Cc: linux-omap [-- Attachment #1: Type: text/plain, Size: 1706 bytes --] Hi, On Tue, 21 Aug 2012 16:42:19 +0300 Peter Ujfalusi <peter.ujfalusi@ti.com> wrote: > On 08/21/2012 08:42 AM, Andreas Kemnade wrote: > > Hi, > > > > I tried a couple of times with different kernels to use mcbsp1 of dm3730 > > in master mode (so that it sends out clocks). > > The result always is that I can send data out. but arecord gets no input. It > > waits for input but does not get anything, although clocks are generated, > > checked that with a scope. > > > > I even took a driver which works in master mode on another mcbsp and just changed > > the mcbsp number. > > What needs to be done to receive data from mcbsp1? > > You should check the PIN mux configuration of McBSP1 FSR/CLKR pins. McBSP1 on > dm3730 have 6 pin configuration. I think the capture should work fine if you > select the FSX as FSR source, and CLKX as CLKR source. > if I understand the TRM correctly, according to Figure 21-26 in chapter 21.4.2.3. if GSYNC is set, the receiver uses the signal from the sample rate generator, so CLKX does not need to be the CLKR source. But I tried also with the DEVCONF0 MCBSP1_CLKR bit as you proposed. I tried snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0, SND_SOC_CLOCK_OUT); snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0, SND_SOC_CLOCK_OUT); That is why I send you my patch about that mux settings. But I had no success. The CLKX as CLKR source and FSX as FSR source setting I have only seen when mcbsp1 is used in slave mode. If you know any working code which uses mcbsp1 in master mode then let me know. Greetings Andreas Kemnade [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 198 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: receiving data from mcbsp1 in master mode 2012-08-22 20:19 ` Andreas Kemnade @ 2012-08-23 8:47 ` Peter Ujfalusi 2012-08-23 9:32 ` Andreas Kemnade 0 siblings, 1 reply; 5+ messages in thread From: Peter Ujfalusi @ 2012-08-23 8:47 UTC (permalink / raw) To: Andreas Kemnade; +Cc: linux-omap On 08/22/2012 11:19 PM, Andreas Kemnade wrote: > if I understand the TRM correctly, according to Figure 21-26 in chapter 21.4.2.3. > if GSYNC is set, the receiver uses the signal from the sample rate generator, > so CLKX does not need to be the CLKR source. > But I tried also with the DEVCONF0 MCBSP1_CLKR bit as you proposed. > I tried > snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0, > SND_SOC_CLOCK_OUT); > snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0, > SND_SOC_CLOCK_OUT); There is an issue with the 6pin mux code, try to add this patch: http://mailman.alsa-project.org/pipermail/alsa-devel/2012-August/054041.html > That is why I send you my patch about that mux settings. But I had no success. > The CLKX as CLKR source and FSX as FSR source setting I have only seen when > mcbsp1 is used in slave mode. If you know any working code which uses mcbsp1 in > master mode then let me know. No, I don't have board which uses McBSP1. -- Péter -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: receiving data from mcbsp1 in master mode 2012-08-23 8:47 ` Peter Ujfalusi @ 2012-08-23 9:32 ` Andreas Kemnade 0 siblings, 0 replies; 5+ messages in thread From: Andreas Kemnade @ 2012-08-23 9:32 UTC (permalink / raw) To: Peter Ujfalusi; +Cc: linux-omap [-- Attachment #1: Type: text/plain, Size: 1381 bytes --] On Thu, 23 Aug 2012 11:47:59 +0300 Peter Ujfalusi <peter.ujfalusi@ti.com> wrote: > On 08/22/2012 11:19 PM, Andreas Kemnade wrote: > > if I understand the TRM correctly, according to Figure 21-26 in chapter 21.4.2.3. > > if GSYNC is set, the receiver uses the signal from the sample rate generator, > > so CLKX does not need to be the CLKR source. > > But I tried also with the DEVCONF0 MCBSP1_CLKR bit as you proposed. > > I tried > > snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0, > > SND_SOC_CLOCK_OUT); > > snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0, > > SND_SOC_CLOCK_OUT); > > There is an issue with the 6pin mux code, try to add this patch: > http://mailman.alsa-project.org/pipermail/alsa-devel/2012-August/054041.html > That is exactly the patch I was talking about in the next line, see http://marc.info/?l=linux-omap&m=134540540412165&w=2 > > That is why I send you my patch about that mux settings. But I had no success. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > The CLKX as CLKR source and FSX as FSR source setting I have only seen when > > mcbsp1 is used in slave mode. If you know any working code which uses mcbsp1 in > > master mode then let me know. > > No, I don't have board which uses McBSP1. > > -- > Péter > > [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 198 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-08-23 9:32 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2012-08-21 5:42 receiving data from mcbsp1 in master mode Andreas Kemnade 2012-08-21 13:42 ` Peter Ujfalusi 2012-08-22 20:19 ` Andreas Kemnade 2012-08-23 8:47 ` Peter Ujfalusi 2012-08-23 9:32 ` Andreas Kemnade
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox