On 01/08/15 20:04, Mark Brown wrote:
> On Thu, Jan 08, 2015 at 05:42:57PM +0100, Jean-Francois Moine wrote:
>
>> Examples:
>
>> - for the Cubox:
>
>> audio-inputs = "i2s", "spdif";
>
>> - for some other board with I2S on the pins 3 and 4 only:
>
>> audio-inputs = "none", "none", "i2s", "i2s";
>
>> - for a fully wired TDA9983B (no driver yet):
>
>> audio-inputs = "i2s", "i2s", "i2s", "i2s", "spdif";
>
> I think that mostly works, though I do wonder if we need a way to
> specify the ordering of the pins (if you can make pin 3 be the first two
> I2S channels for example)? Someone might choose a strange mapping for
> board routing reasons for example.
>
If it helps, I've collated the pin assignments given in the various TDA
datasheets that I can find:
Chip> 9983B 9989 19988 19989
Mode> - S/PDIF I2S S/PDIF I2S S/PDIF I2S
Pin
AP0 WS - WS - WS - WS
AP1 I2S#0 S/PDIF I2S#0 S/PDIF I2S#0 S/PDIF I2S#0
AP2 I2S#1 - - S/PDIF I2S#1 S/PDIF I2S#1
AP3 I2S#2 - - - I2S#2* MCLK -
AP4 I2S#3 - - - I2S#3* - -
AP5 MCLK - - - - - -
AP6 S/PDIF - - - - - -
AP7 AUX - - - - - -
WS = I2S Word Select
* Depends on package
The 9983B differs from the other devices in that the I2S and S/PDIF
functionality is not multiplexed
onto various pins.
Andrew
