[dbaluta]

Hello @plbossart @ranj063 @lgirdwood
This is version 4 of the patches that add the initial DSP Linux driver for i.MX8 into SOF.

This version only contains SOF related patches and fixes review comments from @plbossart and Lucas Stach from arm mailing list:

https://lore.kernel.org/linux-arm-kernel/20190723084104.12639-1-daniel.baluta@nxp.com/

This patches would require IMX DSP interface driver (which I hope to be soon merged by Shawn Guo - imx maintainer).

https://lkml.org/lkml/2019/8/1/260

Now there is the tricky part: how do we bring all these patches together because SOF Linux driver
depends on IMX DSP. I have handled this through KConfig depenencies. So, one cannot select SOF Linux driver compilation without imx dsp.

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Hello @lgirdwood @ranj063 @plbossart
This is version 3 of the patch to add the initial DSP Linux driver for i.MX8 into SOF.

For compilation you need to use the following kconfig fragment:
thesofproject/kconfig#13

I have added all patches related to DSP here in order to be able to do a proper compilation.

these patches are under review with arm64/imx community
ASoC: SOF: Add DT DSP device support
dt-bindings: dsp: fsl: Add DSP core binding support
arm64: dts: imx8qxp: Add DSP DT node

these patches need to be reviewed by SOF community
ASoC: SOF: Add DT DSP device support
ASoC: SOF: topology: Add dummy support for i.MX8 DAIs
ASoC: SOF: imx: Add i.MX8 HW support

this patch is under review:
firmware: imx: Add DSP IPC protocol interface

Patches below are already accepted into Shawn's Guo tree for i.mx8 arm.

clk: imx8: Add DSP related clocks
firmware: imx: scu-pd: Add IRQSTR_DSP PD range
firmware: imx: scu-pd: Add mu13 b side PD range
firmware: imx: scu-pd: Rename mu PD range to mu_a
arm64: dts: imx8qxp: sort LSIO subsystem devices
arm64: dts: imx8qxp: Add lsio_mu13 node

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Version 2:
Hello veryone @ranj063 @plbossart @lgirdwood. This is version 2 of the PR trying to add basic support for i.MX8.

What changed since v1:

• i tried to address all your comments. We now support only no-codec mode
• i removed the patches related to dsp ipc / dts / pd because I have sent them separately to corresponding maintainers.

All patches are here, together with some patches for serial console to work.
https://github.com/dbaluta/linux/commits/topic/sof-dev

All this patches were sent to review, as follows:

1. power domains related changes:

https://lkml.org/lkml/2019/7/18/252

2. DSP IPC interface

https://lkml.org/lkml/2019/7/18/123

3. DSP DT node

@plbossart @lgirdwood what do you think would be the appropriate way to have this reviewed with the alsa community? I guess starting the patches to alsa-devel would be the right way to do?

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Version 1:
This patch series add basic support for i.MX8 SOF driver.

First 3 patches introduce DSP IPC protocol driver (review with community ongoing - https://lkml.org/lkml/2019/6/14/165)

505a33c dt-bindings: arm: fsl: Add DSP IPC binding support
00a5e98 firmware: imx: Add DSP IPC protocol driver
d2a410a mailbox: imx: Clear GIEn bit at shutdown

Next 3 patches add DT nodes corresponding to DSP. Review will be started with community soon.

15ccaaa arm64: dts: imx8qxp: Add DSP DT node
d4dfab8 arm64: dts: imx8qxp: Add DSP MU node
76760c1 clk: imx8qxp: Add DSP clocks

Next 2 patches are small SOF cleanups that can be merged as they are:

7310ddc ASoC: SOF: loader: Dont ignore SRAM block types
23159b1 ASoC: SOF: loader: Use the BAR provided by FW

Last 3 patches are the actual support for i.MX8 SOF driver.

70dd8da ASoC: SOF: Add DT DSP device support
5b28a5e ASoC: SOF: topology: Add dummy support for i.MX8 DAIs
b79c490 ASoC: SOF: imx: Add i.MX8 HW support

Would like to see some review for last 5 patches.