Re: [RFC V3 0/2] arm64: imx8mm: Enable Hantro VPUs

Tim Harvey
2021-12-02T22:55:07Z

On Thu, Dec 2, 2021 at 1:00 PM Adam Ford <aford173@gmail.com> wrote:
>
> On Thu, Dec 2, 2021 at 12:54 PM Tim Harvey <tharvey@gateworks.com> wrote:
> >
> > On Thu, Dec 2, 2021 at 4:29 AM Adam Ford <aford173@gmail.com> wrote:
> > >
> > > On Wed, Dec 1, 2021 at 10:17 PM Adam Ford <aford173@gmail.com> wrote:
> > > >
> > > > The i.MX8M has two Hantro video decoders, called G1 and G2 which appear
> > > > to be related to the video decoders used on the i.MX8MQ, but because of
> > > > how the Mini handles the power domains, the VPU driver does not need to
> > > > handle all the functions, so a new compatible flag is required.
> > > >
> > > > V3 is rebased from git://linuxtv.org/hverkuil/media_tree.git for-v5.17c
> > > > This branch has support for VP9.
> > > >
> > > > I set cma=512M, but this may not be enough memory as some tests appeard to run out of memory
> > > >
> > > > V3 of this series has several changes:
> > > >
> > > > Update imx8m_vpu_hw to add missing 'reg' reference names for G2 and include references to VP9
> > > > Update device tree to remove IMX8MQ_VPU_RESET, remove some duplicate vpu clock parenting
> > > > Fix missing reg-names from vpu_g2 node.
> > > > Apply patch [1] to manage the power domains powering down.
> > > > [1] - https://lore.kernel.org/linux-arm-kernel/20211016210547.171717-1-marex@denx.de/t/
> > > >
> > > > With the above, the following Fluster scores are produced:
> > > >
> > > > G1:
> > > > ./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
> > > > Ran 90/135 tests successfully in 74.406 secs
> > > >
> > > > ./fluster.py run -d GStreamer-VP8-V4L2SL-Gst1.0
> > > > Ran 55/61 tests successfully in 8.080 secs
> > > >
> > > > G2:
> > > > ./fluster.py run -d GStreamer-VP9-V4L2SL-Gst1.0
> > > > Ran 127/303 tests successfully in 203.873 secs
> > > >
> > > > Fluster and G-Streamer were both built from their respective git repos using their respective master/main branches.
> > > >
> > >
> > > I should note, that both interrupts appear to be triggering.
> > >
> > > # cat /proc/interrupts |grep codec
> > > 57: 13442 0 0 0 GICv3 39 Level
> > > 38300000.video-codec
> > > 58: 7815 0 0 0 GICv3 40 Level
> > > 38310000.video-codec
> > >
> >
> > Adam,
> >
> > On another thread you had let me know that you also removed the reset
> > from the pgc_vpumix power domain which does appear to resolve the
> > hang:
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > index eb9dcd9d1a31..31710af544dc 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> > @@ -681,7 +681,6 @@
> > clocks = <&clk
> > IMX8MM_CLK_VPU_DEC_ROOT>;
> > assigned-clocks =
> > <&clk IMX8MM_CLK_VPU_BUS>;
> > assigned-clock-parents
> > = <&clk IMX8MM_SYS_PLL1_800M>;
> > - resets = <&src
> > IMX8MQ_RESET_VPU_RESET>;
> > };
> >
> > pgc_vpu_g1: power-domain@7 {
> >
> > That would make such a patch have a 'Fixes commit d39d4bb15310
> > ("arm64: dts: imx8mm: add GPC node")' but of course that vpu domain
> > isn't active until your series so I'm not sure if we should send this
> > separate or squash it with "arm64: dts: imx8mm: Enable VPU-G1 and
> > VPU-G2". I'm also not clear if removing the reset requires some
> > further discussion with Lucas.
>
> Unless there is objection from Lucas, I'll likely make it the first
> patch in the series marking it with a fixes tag so it gets backported,
> then the rest of the series would be adding the bindings, update the
> driver and adding the G1 and G2 nodes.
>

Adam,

I've also gotten decode+display working for vp8/h264 using this series
and gstreamer-1.19.3 (although I have to use software colorspace
conversion)

# source: vp8 software encode on x86
gst-launch-1.0 -v videotestsrc ! vp8enc ! rtpvp8pay ! udpsink
host=172.24.33.15 port=9001
# sink: vp8 hardware decode on imx8mm
gst-launch-1.0 udpsrc port=9001 caps = 'application/x-rtp,
media=(string)video, clock-rate=(int)90000, encoding-name=(string)VP8,
payload=(int)96, ssrc=(uint)3363940374,
timestamp-offset=(uint)3739685909, seqnum-offset=(uint)28161,
a-framerate=(string)30' ! rtpvp8depay ! v4l2slvp8dec ! videoconvert !
kmssink

# source: h264 software encode on x86
gst-launch-1.0 -v videotestsrc ! video/x-raw,width=800,height=480 !
x264enc ! rtph264pay ! udpsink host=172.24.33.15 port=9001
# sink: h264 hardware decode on imx8mm
gst-launch-1.0 udpsrc port=9001 caps = 'application/x-rtp,
media=(string)video, clock-rate=(int)90000,
encoding-name=(string)H264, packetization-mode=(string)1,
profile-level-id=(string)64001f,
sprop-parameter-sets=(string)"Z2QAH6zZQMg9sBagwCC0oAAAAwAgAAAHkeMGMsA\=\,aOvssiw\=",
payload=(int)96, ssrc=(uint)2753453329,
timestamp-offset=(uint)3593065282, seqnum-offset=(uint)12297,
a-framerate=(string)30' ! rtph264depay ! v4l2slh264dec ! videoconvert
! kmssink

# source: vp9 software encode on x86
gst-launch-1.0 -v videotestsrc ! video/x-raw,width=800,height=480 !
vp9enc ! rtpvp9pay ! udpsink host=172.24.33.15 port=9001
# sink: vp9 hardware decode on imx8mm
gst-launch-1.0 udpsrc port=9001 caps = 'application/x-rtp,
media=(string)video, clock-rate=(int)90000, encoding-name=(string)VP9,
payload=(int)96, ssrc=(uint)2246741422,
timestamp-offset=(uint)3441735424, seqnum-offset=(uint)30250,
a-framerate=(string)30' ! rtpvp9depay ! v4l2slvp9dec ! fakesink
^^^ this fails with no-negotiated

Note I have to use videoconvert because v4l2slvp8dev src is
NV12/YUY2/NV12_32L32 and from testing only BGRx appears compatible
with kmssink (even though gst-inspect kmssink says it can sink
NV12/YUY2). With the 800x480 resolution of my display the CPU overhead
of software colorspcae conversion with videoconvert only about 9%

I haven't yet gotten vp9 decode+display working yet as 'rtpvp9depay !
v4l2slvp9dec ! fakesink' does not negotiate and it might be because my
vp9enc source is on an old gstreamer 1.16.

When you post the next series please add:
Tested-By: Tim Harvey <tharvey@gateworks.com>