On 08/19/2014 04:16 PM, Mark Rutland wrote:
On Mon, Aug 18, 2014 at 10:46:41PM +0100, Jyri Sarha wrote:
Add machine driver support for BeagleBone-Black HDMI audio. BBB has
NXP TDA998X HDMI transmitter connected to McASP port in I2S mode. The
44100 Hz sample-rate and it's multiples can not be accurately produced
on BBB. The only supported sample format is SNDRV_PCM_FORMAT_S32_LE.
The 8 least significant bits are ignored.
Signed-off-by: Jyri Sarha <jsarha@xxxxxx>
---
.../bindings/sound/davinci-evm-audio.txt | 4 +-
sound/soc/davinci/davinci-evm.c | 82 +++++++++++++++++++-
2 files changed, 83 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt b/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt
index 963e100..c137436 100644
--- a/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt
+++ b/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt
@@ -1,7 +1,9 @@
* Texas Instruments SoC audio setups with TLV320AIC3X Codec
Required properties:
-- compatible : "ti,da830-evm-audio" : forDM365/DA8xx/OMAPL1x/AM33xx
+- compatible : "ti,da830-evm-audio" : for DM365/DA8xx/OMAPL1x/AM33xx
+ "ti,am335x-beaglebone-black-audio" : for Beaglebone-black HDMI
+ audio
To keep this legible I'd recommend reorganising this like:
- compatible: should contain one of:
* "ti,da830-evm-audio" for DM365/DA8xx/OMAPL1x/AM33xx
* "ti,am335x-beaglebone-black-audio" for Beaglebone-black HDMI audio
The above looks indeed better. I'll make the change. Oh, and I probably
should change the first line to something like:
* TI SoC audio using McASP to connect to TLV320AIC3X or HDMI endcoder
For the BBB case, do you expect both strings or just the BBB-specific
string?
Normally just the one. In theory a BBB with an audio-cape on top could
utilize another sound node with "ti,da830-evm-audio" compatible property.
Is the 'x' in the BBB string a wildcard? If we know the particular
number for BBB we should use that.
Yes, its a wild card. BBBs have been made at least with AM3358 and
AM3359 SoCs.
Thanks,
Jyri
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