On Thu, 12 May 2022 21:00:48 +0200, Thierry Reding wrote: > From: Thierry Reding <tred...@nvidia.com> > > This adds the "iommu-addresses" property to reserved-memory nodes, which > allow describing the interaction of memory regions with IOMMUs. Two use- > cases are supported: > > 1. Static mappings can be described by pairing the "iommu-addresses" > property with a "reg" property. This is mostly useful for adopting > firmware-allocated buffers via identity mappings. One common use- > case where this is required is if early firmware or bootloaders > have set up a bootsplash framebuffer that a display controller is > actively scanning out from during the operating system boot > process. > > 2. If an "iommu-addresses" property exists without a "reg" property, > the reserved-memory node describes an IOVA reservation. Such memory > regions are excluded from the IOVA space available to operating > system drivers and can be used for regions that must not be used to > map arbitrary buffers. > > Each mapping or reservation is tied to a specific device via a phandle > to the device's device tree node. This allows a reserved-memory region > to be reused across multiple devices. > > Signed-off-by: Thierry Reding <tred...@nvidia.com> > --- > .../reserved-memory/reserved-memory.txt | 1 - > .../reserved-memory/reserved-memory.yaml | 62 +++++++++++++++++++ > include/dt-bindings/reserved-memory.h | 8 +++ > 3 files changed, 70 insertions(+), 1 deletion(-) > delete mode 100644 > Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt > create mode 100644 include/dt-bindings/reserved-memory.h >
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: Documentation/devicetree/bindings/reserved-memory/reserved-memory.example.dts:21.11-18: Warning (ranges_format): /example-0/reserved-memory:ranges: empty "ranges" property but its #address-cells (2) differs from /example-0 (1) Documentation/devicetree/bindings/reserved-memory/reserved-memory.example.dts:21.11-18: Warning (ranges_format): /example-0/reserved-memory:ranges: empty "ranges" property but its #size-cells (2) differs from /example-0 (1) Documentation/devicetree/bindings/reserved-memory/reserved-memory.example.dts:39.15-52.11: Warning (unit_address_vs_reg): /example-0/bus@0: node has a unit name, but no reg or ranges property doc reference errors (make refcheckdocs): Documentation/devicetree/bindings/display/arm,hdlcd.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/display/arm,komeda.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/display/arm,malidp.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/display/arm,pl11x.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/firmware/intel,stratix10-svc.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/gpu/aspeed-gfx.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/media/amphion,vpu.yaml: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/media/aspeed-video.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/media/mediatek-vpu.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/remoteproc/ti,davinci-rproc.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/remoteproc/ti,k3-dsp-rproc.yaml: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/remoteproc/ti,k3-r5f-rproc.yaml: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/remoteproc/ti,keystone-rproc.txt: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt Documentation/devicetree/bindings/remoteproc/ti,omap-remoteproc.yaml: Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt kernel/dma/Kconfig: Documentation/devicetree/bindings/reserved-memory/reserved-memory.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. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
