mbox series

[v6,00/10] Host1x context isolation support

Message ID 20220621151022.1416300-1-cyndis@kapsi.fi (mailing list archive)
Headers show
Series Host1x context isolation support | expand

Message

Mikko Perttunen June 21, 2022, 3:10 p.m. UTC
From: Mikko Perttunen <mperttunen@nvidia.com>

-------------
Merging notes
-------------

The changes to DT bindings should be applied on top of Thierry's patch
'dt-bindings: display: tegra: Convert to json-schema'.

The change to the arm-smmu driver should be omitted if Robin Murphy's
IOMMU bus cleanup series is merged.

***
New in v6:

Rebased on 5.19-rc3 (-next is too broken)
Added patch to fix TRANSCFG offset on NVDEC.
***

***
New in v5:

Rebased
Renamed host1x_context to host1x_memory_context
Small change in DRM side client driver ops to reduce churn with some
  upcoming changes
Add NVDEC support

***

***
New in v4:

Addressed review comments. See individual patches.
***

***
New in v3:

Added device tree bindings for new property.
***

***
New in v2:

Added support for Tegra194
Use standard iommu-map property instead of custom mechanism
***

This series adds support for Host1x 'context isolation'. Since
when programming engines through Host1x, userspace can program in
any addresses it wants, we need some way to isolate the engines'
memory spaces. Traditionally this has either been done imperfectly
with a single shared IOMMU domain, or by copying and verifying the
programming command stream at submit time (Host1x firewall).

Since Tegra186 there is a privileged (only usable by kernel)
Host1x opcode that allows setting the stream ID sent by the engine
to the SMMU. So, by allocating a number of context banks and stream
IDs for this purpose, and using this opcode at the beginning of
each job, we can implement isolation. Due to the limited number of
context banks only each process gets its own context, and not
each channel.

This feature also allows sharing engines among multiple VMs when
used with Host1x's hardware virtualization support - up to 8 VMs
can be configured with a subset of allowed stream IDs, enforced
at hardware level.

To implement this, this series adds a new host1x context bus, which
will contain the 'struct device's corresponding to each context
bank / stream ID, changes to device tree and SMMU code to allow
registering the devices and using the bus, as well as the Host1x
stream ID programming code and support in TegraDRM.

Thanks,
Mikko

Mikko Perttunen (9):
  iommu/arm-smmu: Attach to host1x context device bus
  dt-bindings: host1x: Add iommu-map property
  gpu: host1x: Add context device management code
  gpu: host1x: Program context stream ID on submission
  arm64: tegra: Add Host1x context stream IDs on Tegra186+
  drm/tegra: falcon: Set DMACTX field on DMA transactions
  drm/tegra: nvdec: Fix TRANSCFG register offset
  drm/tegra: Support context isolation
  drm/tegra: Implement stream ID related callbacks on engines

Thierry Reding (1):
  dt-bindings: display: tegra: Convert to json-schema

 .../display/tegra/nvidia,tegra114-mipi.txt    |  41 --
 .../display/tegra/nvidia,tegra114-mipi.yaml   |  74 ++
 .../display/tegra/nvidia,tegra124-dpaux.yaml  | 149 ++++
 .../display/tegra/nvidia,tegra124-sor.yaml    | 206 ++++++
 .../display/tegra/nvidia,tegra124-vic.yaml    |  71 ++
 .../display/tegra/nvidia,tegra186-dc.yaml     |  85 +++
 .../tegra/nvidia,tegra186-display.yaml        | 310 ++++++++
 .../tegra/nvidia,tegra186-dsi-padctl.yaml     |  45 ++
 .../display/tegra/nvidia,tegra20-dc.yaml      | 181 +++++
 .../display/tegra/nvidia,tegra20-dsi.yaml     | 159 +++++
 .../display/tegra/nvidia,tegra20-epp.yaml     |  70 ++
 .../display/tegra/nvidia,tegra20-gr2d.yaml    |  73 ++
 .../display/tegra/nvidia,tegra20-gr3d.yaml    | 214 ++++++
 .../display/tegra/nvidia,tegra20-hdmi.yaml    | 126 ++++
 .../display/tegra/nvidia,tegra20-host1x.txt   | 675 ------------------
 .../display/tegra/nvidia,tegra20-host1x.yaml  | 352 +++++++++
 .../display/tegra/nvidia,tegra20-isp.yaml     |  67 ++
 .../display/tegra/nvidia,tegra20-mpe.yaml     |  73 ++
 .../display/tegra/nvidia,tegra20-tvo.yaml     |  58 ++
 .../display/tegra/nvidia,tegra20-vi.yaml      | 163 +++++
 .../display/tegra/nvidia,tegra210-csi.yaml    |  52 ++
 .../pinctrl/nvidia,tegra124-dpaux-padctl.txt  |  59 --
 arch/arm64/boot/dts/nvidia/tegra186.dtsi      |  11 +
 arch/arm64/boot/dts/nvidia/tegra194.dtsi      |  11 +
 drivers/gpu/drm/tegra/drm.h                   |  11 +
 drivers/gpu/drm/tegra/falcon.c                |   8 +
 drivers/gpu/drm/tegra/falcon.h                |   1 +
 drivers/gpu/drm/tegra/nvdec.c                 |  13 +-
 drivers/gpu/drm/tegra/submit.c                |  48 +-
 drivers/gpu/drm/tegra/uapi.c                  |  43 +-
 drivers/gpu/drm/tegra/vic.c                   |  67 +-
 drivers/gpu/host1x/Makefile                   |   1 +
 drivers/gpu/host1x/context.c                  | 160 +++++
 drivers/gpu/host1x/context.h                  |  27 +
 drivers/gpu/host1x/dev.c                      |  12 +-
 drivers/gpu/host1x/dev.h                      |   2 +
 drivers/gpu/host1x/hw/channel_hw.c            |  52 +-
 drivers/gpu/host1x/hw/host1x06_hardware.h     |  10 +
 drivers/gpu/host1x/hw/host1x07_hardware.h     |  10 +
 drivers/iommu/arm/arm-smmu/arm-smmu.c         |  13 +
 include/linux/host1x.h                        |  26 +
 41 files changed, 3037 insertions(+), 792 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.txt
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-dpaux.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-vic.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dc.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-display.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dsi-padctl.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dsi.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-epp.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
 delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-isp.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-mpe.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-tvo.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
 create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra210-csi.yaml
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-dpaux-padctl.txt
 create mode 100644 drivers/gpu/host1x/context.c
 create mode 100644 drivers/gpu/host1x/context.h

Comments

Rob Herring (Arm) June 24, 2022, 5:26 p.m. UTC | #1
On Tue, 21 Jun 2022 18:10:14 +0300, Mikko Perttunen wrote:
> From: Thierry Reding <treding@nvidia.com>
> 
> Convert the Tegra host1x controller bindings from the free-form text
> format to json-schema.
> 
> This also adds the missing display-hub DT bindings that were not
> previously documented.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
>  .../display/tegra/nvidia,tegra114-mipi.txt    |  41 --
>  .../display/tegra/nvidia,tegra114-mipi.yaml   |  74 ++
>  .../display/tegra/nvidia,tegra124-dpaux.yaml  | 149 ++++
>  .../display/tegra/nvidia,tegra124-sor.yaml    | 206 ++++++
>  .../display/tegra/nvidia,tegra124-vic.yaml    |  71 ++
>  .../display/tegra/nvidia,tegra186-dc.yaml     |  85 +++
>  .../tegra/nvidia,tegra186-display.yaml        | 310 ++++++++
>  .../tegra/nvidia,tegra186-dsi-padctl.yaml     |  45 ++
>  .../display/tegra/nvidia,tegra20-dc.yaml      | 181 +++++
>  .../display/tegra/nvidia,tegra20-dsi.yaml     | 159 +++++
>  .../display/tegra/nvidia,tegra20-epp.yaml     |  70 ++
>  .../display/tegra/nvidia,tegra20-gr2d.yaml    |  73 ++
>  .../display/tegra/nvidia,tegra20-gr3d.yaml    | 214 ++++++
>  .../display/tegra/nvidia,tegra20-hdmi.yaml    | 126 ++++
>  .../display/tegra/nvidia,tegra20-host1x.txt   | 675 ------------------
>  .../display/tegra/nvidia,tegra20-host1x.yaml  | 347 +++++++++
>  .../display/tegra/nvidia,tegra20-isp.yaml     |  67 ++
>  .../display/tegra/nvidia,tegra20-mpe.yaml     |  73 ++
>  .../display/tegra/nvidia,tegra20-tvo.yaml     |  58 ++
>  .../display/tegra/nvidia,tegra20-vi.yaml      | 163 +++++
>  .../display/tegra/nvidia,tegra210-csi.yaml    |  52 ++
>  .../pinctrl/nvidia,tegra124-dpaux-padctl.txt  |  59 --
>  22 files changed, 2523 insertions(+), 775 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.txt
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-dpaux.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-vic.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dc.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-display.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dsi-padctl.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dsi.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-epp.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
>  delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-isp.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-mpe.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-tvo.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
>  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra210-csi.yaml
>  delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-dpaux-padctl.txt
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml: allOf:1:if:not:properties: {'contains': {'const': 'nvidia,panel'}} should not be valid under {'$ref': '#/definitions/sub-schemas'}
	hint: A json-schema keyword was found instead of a DT property name.
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml: ignoring, error in schema: allOf: 1: if: not: properties
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.example.dtb: gr3d@54180000: resets: [[4294967295, 24]] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.example.dtb: gr3d@54180000: reset-names: ['3d'] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr2d@54140000: resets: [[4294967295, 21]] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr2d@54140000: reset-names: ['2d'] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr3d@54180000: resets: [[4294967295, 24]] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr3d@54180000: reset-names: ['3d'] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.example.dtb:0:0: /example-0/sor@54540000: failed to match any schema with compatible: ['nvidia,tegra210-sor']
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.example.dtb: gr2d@54140000: resets: [[4294967295, 21]] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.example.dtb: gr2d@54140000: reset-names: ['2d'] is too short
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml

doc reference errors (make refcheckdocs):
MAINTAINERS: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
MAINTAINERS: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt

See https://patchwork.ozlabs.org/patch/

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.
Rob Herring June 27, 2022, 1:33 p.m. UTC | #2
On Fri, Jun 24, 2022 at 11:26 AM Rob Herring <robh@kernel.org> wrote:
>
> On Tue, 21 Jun 2022 18:10:14 +0300, Mikko Perttunen wrote:
> > From: Thierry Reding <treding@nvidia.com>
> >
> > Convert the Tegra host1x controller bindings from the free-form text
> > format to json-schema.
> >
> > This also adds the missing display-hub DT bindings that were not
> > previously documented.
> >
> > Reviewed-by: Rob Herring <robh@kernel.org>
> > Signed-off-by: Thierry Reding <treding@nvidia.com>
> > ---
> >  .../display/tegra/nvidia,tegra114-mipi.txt    |  41 --
> >  .../display/tegra/nvidia,tegra114-mipi.yaml   |  74 ++
> >  .../display/tegra/nvidia,tegra124-dpaux.yaml  | 149 ++++
> >  .../display/tegra/nvidia,tegra124-sor.yaml    | 206 ++++++
> >  .../display/tegra/nvidia,tegra124-vic.yaml    |  71 ++
> >  .../display/tegra/nvidia,tegra186-dc.yaml     |  85 +++
> >  .../tegra/nvidia,tegra186-display.yaml        | 310 ++++++++
> >  .../tegra/nvidia,tegra186-dsi-padctl.yaml     |  45 ++
> >  .../display/tegra/nvidia,tegra20-dc.yaml      | 181 +++++
> >  .../display/tegra/nvidia,tegra20-dsi.yaml     | 159 +++++
> >  .../display/tegra/nvidia,tegra20-epp.yaml     |  70 ++
> >  .../display/tegra/nvidia,tegra20-gr2d.yaml    |  73 ++
> >  .../display/tegra/nvidia,tegra20-gr3d.yaml    | 214 ++++++
> >  .../display/tegra/nvidia,tegra20-hdmi.yaml    | 126 ++++
> >  .../display/tegra/nvidia,tegra20-host1x.txt   | 675 ------------------
> >  .../display/tegra/nvidia,tegra20-host1x.yaml  | 347 +++++++++
> >  .../display/tegra/nvidia,tegra20-isp.yaml     |  67 ++
> >  .../display/tegra/nvidia,tegra20-mpe.yaml     |  73 ++
> >  .../display/tegra/nvidia,tegra20-tvo.yaml     |  58 ++
> >  .../display/tegra/nvidia,tegra20-vi.yaml      | 163 +++++
> >  .../display/tegra/nvidia,tegra210-csi.yaml    |  52 ++
> >  .../pinctrl/nvidia,tegra124-dpaux-padctl.txt  |  59 --
> >  22 files changed, 2523 insertions(+), 775 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.txt
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra114-mipi.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-dpaux.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-vic.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dc.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-display.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra186-dsi-padctl.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dc.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-dsi.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-epp.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-hdmi.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-isp.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-mpe.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-tvo.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-vi.yaml
> >  create mode 100644 Documentation/devicetree/bindings/display/tegra/nvidia,tegra210-csi.yaml
> >  delete mode 100644 Documentation/devicetree/bindings/pinctrl/nvidia,tegra124-dpaux-padctl.txt
> >
>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml: allOf:1:if:not:properties: {'contains': {'const': 'nvidia,panel'}} should not be valid under {'$ref': '#/definitions/sub-schemas'}
>         hint: A json-schema keyword was found instead of a DT property name.
>         from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.yaml: ignoring, error in schema: allOf: 1: if: not: properties
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.example.dtb: gr3d@54180000: resets: [[4294967295, 24]] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.example.dtb: gr3d@54180000: reset-names: ['3d'] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr2d@54140000: resets: [[4294967295, 21]] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr2d@54140000: reset-names: ['2d'] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr3d@54180000: resets: [[4294967295, 24]] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.example.dtb: gr3d@54180000: reset-names: ['3d'] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr3d.yaml
> Documentation/devicetree/bindings/display/tegra/nvidia,tegra124-sor.example.dtb:0:0: /example-0/sor@54540000: failed to match any schema with compatible: ['nvidia,tegra210-sor']
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.example.dtb: gr2d@54140000: resets: [[4294967295, 21]] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.example.dtb: gr2d@54140000: reset-names: ['2d'] is too short
>         From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-gr2d.yaml
>
> doc reference errors (make refcheckdocs):
> MAINTAINERS: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
> MAINTAINERS: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
>
> See https://patchwork.ozlabs.org/patch/
>
> This check can fail if there are any dependencies. The base for a patch
> series is generally the most recent rc1.
>
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
>
> pip3 install dtschema --upgrade
>
> Please check and re-submit.

Now failing in linux-next. Please fix.

Rob