Re: [RFC 0/5] Split iMX8MQ Hantro VPU into G1 and G2 with blk-ctrl support

Adam Ford
2021-12-05T19:51:16Z

On Sun, Dec 5, 2021 at 12:16 PM Adam Ford <aford173@gmail.com> wrote:
>
> Currently, the VPU in the i.MQ8MQ is appearing as one codec, but in reality, it's
> two IP blocks called G1 and G2. There is initialization code in VPU code to
> pull some clocks, resets and other features which has been integrated into
> the vpu-blk-ctrl for the i.MX8M Mini and a similar method can be used to make
> the VPU codec's operate as stand-alone cores without having to know the details
> of each other or the quirks unique to the i.MX8MQ, so the remaining code can be
> left more generic.
>
> This series was started by Lucas Stach, and picked up by me so some patches have
> his s-o-b and mine where I might have changed a few minor items. It's in an RFC state
> because the G2 VP9 operations appear to hang, but the parent code from which I started doesn't
> appear to show VP9 support, and it looks like it should.
>
> since the g-streamer and media trees are in a constant state of change, this series is based on
> git://linuxtv.org/hverkuil/media_tree.git for-v5.17e
>

I forgot to post Fluster results.

Before the patches to this branch:

2gst-main] root@localhost:~/gstreamer/fluster# ./fluster.py list -c |grep -i v4l

GStreamer-H.264-V4L2-Gst1.0: GStreamer H.264 V4L2 decoder for
GStreamer 1.0... ❌
GStreamer-H.264-V4L2SL-Gst1.0: GStreamer H.264 V4L2SL decoder for
GStreamer 1.0... ✔️
GStreamer-H.265-V4L2-Gst1.0: GStreamer H.265 V4L2 decoder for
GStreamer 1.0... ❌
GStreamer-H.265-V4L2SL-Gst1.0: GStreamer H.265 V4L2SL decoder for
GStreamer 1.0... ❌
GStreamer-VP8-V4L2-Gst1.0: GStreamer VP8 V4L2 decoder for GStreamer 1.0... ❌
GStreamer-VP8-V4L2SL-Gst1.0: GStreamer VP8 V4L2SL decoder for
GStreamer 1.0... ✔️
GStreamer-VP9-V4L2SL-Gst1.0: GStreamer VP9 V4L2SL decoder for
GStreamer 1.0... ❌
GStreamer-AV1-V4L2SL-Gst1.0: GStreamer AV1 V4L2SL decoder for
GStreamer 1.0... ❌
[gst-main] root@localhost:~/gstreamer/fluster#

There was no VP9 support.

./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
GStreamer-H.264-V4L2SL-Gst1.0
Ran 90/135 tests successfully in 58.787 secs

AFTER this series, two decoders appear:

[ 15.919137] hantro-vpu 38300000.video-codec: registered
nxp,imx8mq-vpu-g1-dec as /dev/video0
[ 15.983579] hantro-vpu 38310000.video-codec: registered
nxp,imx8mq-vpu-g2-dec as /dev/video1

VP9 was listed:

GStreamer-H.264-V4L2-Gst1.0: GStreamer H.264 V4L2 decoder for
GStreamer 1.0... ❌
GStreamer-H.264-V4L2SL-Gst1.0: GStreamer H.264 V4L2SL decoder for
GStreamer 1.0... ✔️
GStreamer-H.265-V4L2-Gst1.0: GStreamer H.265 V4L2 decoder for
GStreamer 1.0... ❌
GStreamer-H.265-V4L2SL-Gst1.0: GStreamer H.265 V4L2SL decoder for
GStreamer 1.0... ❌
GStreamer-VP8-V4L2-Gst1.0: GStreamer VP8 V4L2 decoder for GStreamer 1.0... ❌
GStreamer-VP8-V4L2SL-Gst1.0: GStreamer VP8 V4L2SL decoder for
GStreamer 1.0... ✔️
GStreamer-VP9-V4L2SL-Gst1.0: GStreamer VP9 V4L2SL decoder for
GStreamer 1.0... ✔️
GStreamer-AV1-V4L2SL-Gst1.0: GStreamer AV1 V4L2SL decoder for
GStreamer 1.0... ❌

./fluster.py run -d GStreamer-VP8-V4L2SL-Gst1.0
Ran 55/61 tests successfully in 8.565 secs

./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
Ran 90/135 tests successfully in 60.269 secs

Same results for H.264

VP9 Hangs, where it didn't even appear as available before:

./fluster.py run -d GStreamer-VP9-V4L2SL-Gst1.0
****************************************************************************************************
Running test suite VP9-TEST-VECTORS with decoder GStreamer-VP9-V4L2SL-Gst1.0
Using 4 parallel job(s)
****************************************************************************************************

[TEST SUITE ] (DECODER ) TEST VECTOR
... RESULT
----------------------------------------------------------------------
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-00.webm ... Success
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-01.webm ... Success
[VP9-TEST-VECTORS] (GStreamer-VP9-V4L2SL-Gst1.0)
vp90-2-00-quantizer-02.webm ... Succes

<hang > - and yes, 'Success' didnt' finish writing to the serial port.

> Adam Ford (2):
> media: hantro: split i.MX8MQ G1 and G2 code
> arm64: dts: imx8mq: Split i.MX8MQ G1 and G2 with vpu-blk-ctrl
>
> Lucas Stach (3):
> dt-bindings: power: imx8mq: add defines for VPU blk-ctrl domains
> dt-bindings: soc: add binding for i.MX8MQ VPU blk-ctrl
> soc: imx: imx8m-blk-ctrl: add i.MX8MQ VPU blk-ctrl
>
> .../soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml | 71 +++++++++++
> arch/arm64/boot/dts/freescale/imx8mq.dtsi | 69 ++++++----
> drivers/soc/imx/imx8m-blk-ctrl.c | 67 ++++++++++
> drivers/staging/media/hantro/hantro_drv.c | 4 +-
> drivers/staging/media/hantro/hantro_hw.h | 2 +-
> drivers/staging/media/hantro/imx8m_vpu_hw.c | 119 +++---------------
> include/dt-bindings/power/imx8mq-power.h | 3 +
> 7 files changed, 205 insertions(+), 130 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml
>
> --
> 2.32.0
>