[v2,0/5] Reset driver for IMX8MQ VPU hardware block
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Message ID 20210226091128.14379-1-benjamin.gaignard@collabora.com
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  • Reset driver for IMX8MQ VPU hardware block
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Benjamin Gaignard Feb. 26, 2021, 9:11 a.m. UTC
The two VPUs inside IMX8MQ share the same control block which can be see
as a reset hardware block.
In order to be able to add the second VPU (for HECV decoding) it will be
more handy if the both VPU drivers instance don't have to share the
control block registers. This lead to implement it as an independ reset 
driver and to change the VPU driver to use it.

Please note that this series break the compatibility between the DTB and
kernel. This break is limited to IMX8MQ SoC and is done when the driver
is still in staging directory.

version 2:
- Document the change in VPU bindings

Benjamin Gaignard (5):
  dt-bindings: reset: IMX8MQ VPU reset
  dt-bindings: media: IMX8MQ VPU: document reset usage
  reset: Add reset driver for IMX8MQ VPU block
  media: hantro: Use reset driver
  arm64: dts: imx8mq: Use reset driver for VPU hardware block

 .../bindings/media/nxp,imx8mq-vpu.yaml        |  11 +-
 .../bindings/reset/fsl,imx8mq-vpu-reset.yaml  |  54 ++++++
 arch/arm64/boot/dts/freescale/imx8mq.dtsi     |  31 +++-
 drivers/reset/Kconfig                         |   8 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-imx8mq-vpu.c              | 169 ++++++++++++++++++
 drivers/staging/media/hantro/Kconfig          |   1 +
 drivers/staging/media/hantro/imx8m_vpu_hw.c   |  61 ++-----
 include/dt-bindings/reset/imx8mq-vpu-reset.h  |  16 ++
 9 files changed, 293 insertions(+), 59 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/reset/fsl,imx8mq-vpu-reset.yaml
 create mode 100644 drivers/reset/reset-imx8mq-vpu.c
 create mode 100644 include/dt-bindings/reset/imx8mq-vpu-reset.h