Re: [PATCH v3 0/5] Reset driver for IMX8MQ VPU hardware block

Rob Herring
2021-03-08T18:23:03Z

On Mon, Mar 01, 2021 at 04:17:49PM +0100, Benjamin Gaignard wrote:
> 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.

As this information will be lost, please put in the binding and dts
patch.

>
> version 3:
> - Fix error in VPU example node
>
> 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 | 14 +-
> .../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, 294 insertions(+), 61 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
>
> --
> 2.25.1
>