From: Jean-Francois Moine <moinejf@free.fr>
To: Jyri Sarha <jsarha@ti.com>
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
dri-devel@lists.freedesktop.org, "Ujfalusi,
Peter" <peter.ujfalusi@ti.com>, Mark Brown <broonie@kernel.org>,
bcousson@baylibre.com, linux-omap@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [alsa-devel] [PATCH RFC v2 REPOST 3/8] ASoC: davinci-evm: HDMI audio support for TDA998x trough McASP I2S bus
Date: Wed, 22 Jan 2014 11:19:53 +0100 [thread overview]
Message-ID: <20140122111953.238349a5@armhf> (raw)
In-Reply-To: <52DF8D60.9020505@ti.com>
On Wed, 22 Jan 2014 11:20:32 +0200
Jyri Sarha <jsarha@ti.com> wrote:
> On 01/15/2014 05:51 PM, Jean-Francois Moine wrote:
> > On Wed, 15 Jan 2014 13:27:21 +0200
> > Jyri Sarha <jsarha@ti.com> wrote:
> >
> >> From driver/gpu/drm/i2c/tda998x_drv.c. The driver configures CTS_N
> >> register statically to a value that works only with 4 byte samples.
> >> According to my tests it is possible to support 3 and 2 byte samples too
> >> by changing the CTS_N register value, but I am not sure if the
> >> configuration can be changed on the fly. My data sheet of the nxp chip
> >> is very vague about the register definitions, but I suppose the register
> >> configures some clock divider on the chip. HDMI supports only upto 24bit
> >> audio and the data sheet states that any extraneous least significant
> >> bits are ignored.
> >
> > In the tda998x driver, the CTS_N is automatic (AIP_CNTRL_0_ACR_MAN is
> > not set).
> >
> > Then, in my Cubox (Marvell A510 + tda19988), the 16, 24 and 32 bits
> > formats are working well with I2S input at any rate.
> >
>
> Could you refer the kernel version (main line?) and the involved ASoC
> drivers so could take I a look if there is something I could do differently?
Both drivers are in the kernel main line.
The ASoC is in sound/soc/kirkwood/. kirkwood-i2s.c defines the DAIs I2S
and S/PDIF outputs.
As both I2S and S/PDIF may be used for HDMI output in the Cubox,
I wrote a tda998x CODEC which gets the audio ports from the DT and
dynamically sets these ports and the audio type (i2s / spdif) on audio
streaming start. I have not submitted yet this codec and the associated
changes in tda998x, because I am waiting for a first patch series on the
tda998x to be applied
(http://lists.freedesktop.org/archives/dri-devel/2014-January/051552.html).
--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
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next prev parent reply other threads:[~2014-01-22 10:19 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1384862950.git.jsarha@ti.com>
2013-11-19 12:21 ` [PATCH RFC] DTS Changes for Beaglebone-Black HDMI audio Jyri Sarha
2013-11-19 12:21 ` [PATCH RFC] ARM/dts: am335x-boneblack: Add HDMI audio support Jyri Sarha
2013-11-19 13:02 ` Benoit Cousson
2013-11-19 13:29 ` Jyri Sarha
[not found] ` <cover.1384862950.git.jsarha-l0cyMroinI0@public.gmane.org>
2013-12-10 18:52 ` [RFC v2] Beaglebone-Black HDMI audio Jyri Sarha
2013-12-20 10:36 ` [PATCH RFC v2 REPOST 0/8] " Jyri Sarha
2013-12-20 10:37 ` [PATCH RFC v2 REPOST 1/8] clk: add gpio controlled clock Jyri Sarha
2013-12-20 10:38 ` [PATCH RFC v2 REPOST 2/8] ASoC: davinci-evm: Add named clock reference to DT bindings Jyri Sarha
2013-12-31 13:16 ` Mark Brown
2014-01-15 11:12 ` Jyri Sarha
2013-12-20 10:39 ` [PATCH RFC v2 REPOST 3/8] ASoC: davinci-evm: HDMI audio support for TDA998x trough McASP I2S bus Jyri Sarha
2013-12-31 13:25 ` Mark Brown
2014-01-15 11:27 ` Jyri Sarha
2014-01-15 13:48 ` Anssi Hannula
2014-01-15 16:28 ` Jyri Sarha
2014-01-15 15:51 ` [alsa-devel] " Jean-Francois Moine
2014-01-22 9:20 ` Jyri Sarha
2014-01-22 10:19 ` Jean-Francois Moine [this message]
2014-01-22 10:46 ` [alsa-devel] " Jean-Francois Moine
2014-01-21 19:15 ` Mark Brown
2014-01-24 13:01 ` Jyri Sarha
2013-12-20 10:40 ` [PATCH RFC v2 REPOST 4/8] ASoC: hdmi-codec: Add devicetree binding with documentation Jyri Sarha
2013-12-31 13:26 ` Mark Brown
2013-12-20 10:40 ` [PATCH RFC v2 REPOST 5/8] ASoC: davinci: HDMI audio build for AM33XX and TDA998x Jyri Sarha
2013-12-20 10:41 ` [PATCH RFC v2 REPOST 6/8] drm/tilcdc: Add I2C HDMI audio config for tda998x Jyri Sarha
2013-12-20 10:42 ` [PATCH RFC v2 REPOST 7/8] ARM: OMAP2+: omap2plus_defconfig: Enable tilcdc and TDA998X HDMI support Jyri Sarha
2013-12-20 10:43 ` [PATCH RFC v2 REPOST 8/8] ARM: OMAP2+: omap2plus_defconfig: Enable BeagleBone Black HDMI audio support Jyri Sarha
2013-12-20 11:30 ` [alsa-devel] [PATCH RFC v2 REPOST 0/8] Beaglebone-Black HDMI audio Mark Brown
2013-12-20 11:51 ` Jyri Sarha
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