[alsa-devel] [linux-sunxi] [PATCH v3 00/12] ASoC: Add I2S support for Allwinner H3 SoCs

[Code Kipper]

On 31 July 2017 at 09:05, Olliver Schinagl <oliver+list at schinagl.nl> wrote:
> Hey Marcus,
>
> On 29-07-17 16:17, codekipper at gmail.com wrote:
>>
>> From: Marcus Cooper <codekipper at gmail.com>
>>
>> Hi All,
>> please find attached a series of patches to bring i2s support to the
>> Allwinner H3 SoC. This has been tested with the following setups:
>>
>> A20 Olimex EVB connected to a pcm5102
>
> But that's not an H3 is it? :)

Was it broken?.....No...Have you fucked with it?....Yes....Is it now
broken?...well better test!
>
>> Orange Pi 2 connected to a uda1380
>> Orange Pi 2 hdmi audio playback
>> Pine 64 connected to the audio DAC board
>>
>> To get i2s working some additional patches are required which will be
>> delivered later. For now they have been pushed here
>>
>> https://github.com/codekipper/linux-sunxi/commits/sunxi-audio-h3
>
>
> Since I want to use i2s on the A20, i'm trying out your patches. It would be
> helpfull if you could point out which patches are missing (and if the
> subject doesn't cover it why those are needed)
Mainline currently supports A20...just needs pins to be added to the
dtsi and codec specific added to the board dts. If you're having
problems check pin connections to your external board and make sure
the codec is being compiled.
Good luck,
CK
>
>
>>
>> I don't own a A33 device which uses the i2s block for the audio codec
>> so if someone could test against that it would be much appreciated.
>>
>> I'm also wondering if there is a preferred way of setting the lrclk
>> size in the dts?..currently it is set to the sample width but for example
>> the pcm5102a wants it to be 32 bits whatever the sample rate.
>>
>> Thanks in advance,
>> CK
>>
>> ---
>>
>> v3 changes compared to v2 are:
>> - initial changes to prepare driver for newer SoCs has been broken down
>>   into smaller patches
>> - reduce use of regmap fields to where just needed.
>> - clkdiv expansion will be delivered later.
>> - defines for H3 variant segregated.
>> - fixed regmap config issue with SUN8I_I2S_FIFO_TX_REG.
>>
>>
>> v2 changes compared to v1 are:
>>  - massive refactoring to remove duplicate code making use of
>> regmap_fields.
>>  - extending the clock divisors.
>>  - removed code that should be delivered when we support 20/24bits
>>
>> ---
>>
>> Marcus Cooper (12):
>>   ASoC: sun4i-i2s: Extend quirks scope
>>   ASoC: sun4i-i2s: Add clkdiv offsets to quirks
>>   ASoC: sun4i-i2s: Add regmap config to quirks
>>   ASoC: sun4i-i2s: Add TX FIFO offset to quirks
>>   ASoC: sun4i-i2s: Add regmap fields for channels
>>   ASoC: sun4i-i2s: Add changes for wss and sr
>>   ASoC: sun4i-i2s: bclk and lrclk polarity tidyup
>>   ASoC: sun4i-i2s: Add mclk enable regmap field
>>   ASoC: sun4i-i2s: Add regmap field to set format
>>   ASoC: sun4i-i2s: Check for slave select bit
>>   ASoC: sun4i-i2s: Update global enable with bitmask
>>   ASoC: sun4i-i2s: Add support for H3
>>
>>  .../devicetree/bindings/sound/sun4i-i2s.txt        |   2 +
>>  sound/soc/sunxi/sun4i-i2s.c                        | 460
>> ++++++++++++++++++---
>>  2 files changed, 398 insertions(+), 64 deletions(-)
>>
>