linux-kernel - [RFC V3 0/2] arm64: imx8mm: Enable Hantro VPUs

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Date:   Wed,  1 Dec 2021 22:16:25 -0600
From:   Adam Ford <aford173@...il.com>
To:     linux-media@...r.kernel.org
Cc:     ezequiel@...guardiasur.com.ar, tharvey@...eworks.com,
        nicolas@...fresne.ca, aford@...conembedded.com,
        hverkuil-cisco@...all.nl, Adam Ford <aford173@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-staging@...ts.linux.dev
Subject: [RFC V3 0/2] arm64: imx8mm: Enable Hantro VPUs

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.

Adam Ford (2):
  media: hantro: Add support for i.MX8M Mini
  arm64: dts: imx8mm: Enable VPU-G1 and VPU-G2

 arch/arm64/boot/dts/freescale/imx8mm.dtsi   | 41 +++++++++++++
 drivers/staging/media/hantro/hantro_drv.c   |  2 +
 drivers/staging/media/hantro/hantro_hw.h    |  2 +
 drivers/staging/media/hantro/imx8m_vpu_hw.c | 65 +++++++++++++++++++++
 4 files changed, 110 insertions(+)

-- 
2.32.0