Hi Péter,
Am 04.07.2021 um 17:04 schrieb Peter Ujfalusi peter.ujfalusi@gmail.com:
Hi,
it has been on my todo list for several years to support McASP on OMAP4 devices. For Galaxy Nexus we had an omap-mcasp driver (which was mostly a stripped down davinci-mcasp driver) to support what was needed on that specific phone + it's dock for S/PDIF (48KHz, 16bit, stereo).
Not many (if any) device available to test the DIT mode of McASP. I have used BeagleBone White (McASP1 AXR3 can be routed to a pin) to get the S/PDIF mode working then PandaES for OMAP4 support (on PandaES the gpio_121 is not used and the signal is routed to expansion J6 pin14)
In theory the McASP in OMAP5 should be working after this series, but the OMAP5 TRM is not public and I do not have one to check the addresses and see if there is a way to test it on omap5-uevm.
Mark, Tony: The ASoC and dts patches can go via separate tree I felt that it is better if they are together, at least initially.
Nikolaus: fyi, this might be useful for Pyra?
Yes, definitively.
I just wonder how compatible it is with the "old" omap-mcasp driver we carry along for the Pyra:
https://git.goldelico.com/?p=letux-kernel.git;a=blob;f=sound/soc/ti/omap-mca...
Does it now have additional functionality or robustness? And does it need changes of the OMAP5 device tree?
And also important seems to be the ABE/AESS integration where we so far failed to make it work again on more recent kernels. Our most recent patch set is here:
https://git.goldelico.com/?p=letux-kernel.git;a=shortlog;h=refs/heads/letux/...
Anyways I am happy to see a little progress on the omap4/5 audio subsystem.
BR and thanks, Nikolaus
Regards, Péter
Peter Ujfalusi (5): ASoC: ti: davinci-mcasp: Fix DIT mode support ASoC: dt-bindings: davinci-mcasp: Add compatible string for OMAP4 ASoC: ti: davinci-mcasp: Add support for the OMAP4 version of McASP ARM: dts: omap4-l4-abe: Correct sidle modes for McASP ARM: dts: omap4-l4-abe: Add McASP configuration
.../bindings/sound/davinci-mcasp-audio.txt | 1 + arch/arm/boot/dts/omap4-l4-abe.dtsi | 39 ++-- include/linux/platform_data/davinci_asp.h | 1 + sound/soc/ti/Kconfig | 1 + sound/soc/ti/davinci-mcasp.c | 168 +++++++++++++++--- 5 files changed, 168 insertions(+), 42 deletions(-)
-- 2.32.0