linux-kernel - [RFC V2 0/6] media: Hantro: Split iMX8MQ VPU into G1 and G2 with blk-ctrl support

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Date:   Mon,  6 Dec 2021 19:54:39 -0600
From:   Adam Ford <aford173@...il.com>
To:     linux-media@...r.kernel.org
Cc:     cphealy@...il.com, benjamin.gaignard@...labora.com,
        hverkuil@...all.nl, Adam Ford <aford173@...il.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        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>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lucas Stach <l.stach@...gutronix.de>,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev
Subject: [RFC V2 0/6] media: Hantro: Split iMX8MQ VPU into G1 and G2 with blk-ctrl support

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 with one by Benjamin Gaignard.
Most patches have been modified slightly by me.  It's in an RFC state
because I wasn't sure how to best handle the signatures and wasn't sure
if I could base it off the branch I did.

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

The downstream code from NXP shows the G1 and G2 clocks running
at 600MHz, but between the TRM and the datasheet, there is some
discrepancy.  Because the NXP reference code used 600MHz, that is
what was chosen here.  Users who need to adjust their G1 and G2
clocks can do so in their board files.

Fluster Results:

./fluster.py run -dGStreamer-H.264-V4L2SL-Gst1.0
Ran 90/135 tests successfully               in 61.966 secs

./fluster.py run -d GStreamer-VP8-V4L2SL-Gst1.0
Ran 55/61 tests successfully               in 7.660 secs


./fluster.py run -d GStreamer-VP9-V4L2SL-Gst1.0
Ran 144/303 tests successfully               in 162.665 secs

Changes log:

V2:  Make vpu-blk-ctrl enable G2 clock when enabling fuses.
     Remove syscon from device tree and binding example
     Added modified nxp,imx8mq-vpu.yaml from Benjamin Gaignard 

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

Benjamin Gaignard (1):
  dt-bindings: media: nxp,imx8mq-vpu: Update the bindings for G2 support

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

 .../bindings/media/nxp,imx8mq-vpu.yaml        |  58 +++++----
 .../soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml      |  71 +++++++++++
 arch/arm64/boot/dts/freescale/imx8mq.dtsi     |  69 ++++++----
 drivers/soc/imx/imx8m-blk-ctrl.c              |  68 +++++++++-
 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 +
 8 files changed, 237 insertions(+), 157 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx8mq-vpu-blk-ctrl.yaml


base-commit: d1888b0bfd2ddef2e8a81505ffa200b92cc32e0c
-- 
2.32.0