diff mbox series

[2/3] dt-bindings: Add io-tlb-segsize property for restricted-dma-pool

Message ID 20211123112104.3530135-3-hsinyi@chromium.org (mailing list archive)
State New, archived
Headers show
Series Allow restricted-dma-pool to customize IO_TLB_SEGSIZE | expand

Commit Message

Hsin-Yi Wang Nov. 23, 2021, 11:21 a.m. UTC
Add a io-tlb-segsize property that each restricted-dma-pool can set its
own io_tlb_segsize since some use cases require slabs larger than default
value (128).

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
---
 .../bindings/reserved-memory/shared-dma-pool.yaml         | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Rob Herring (Arm) Nov. 23, 2021, 4:34 p.m. UTC | #1
On Tue, 23 Nov 2021 19:21:03 +0800, Hsin-Yi Wang wrote:
> Add a io-tlb-segsize property that each restricted-dma-pool can set its
> own io_tlb_segsize since some use cases require slabs larger than default
> value (128).
> 
> Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
> ---
>  .../bindings/reserved-memory/shared-dma-pool.yaml         | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 

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/reserved-memory/shared-dma-pool.yaml: properties:io-tlb-segsize:type: 'anyOf' conditional failed, one must be fixed:
	'u32' is not one of ['array', 'boolean', 'integer', 'null', 'number', 'object', 'string']
	'u32' is not of type 'array'
	from schema $id: http://json-schema.org/draft-07/schema#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml: properties:io-tlb-segsize:type: 'u32' is not one of ['boolean', 'object']
	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml: ignoring, error in schema: properties: io-tlb-segsize: type
warning: no schema found in file: ./Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
Documentation/devicetree/bindings/display/msm/gpu.example.dt.yaml:0:0: /example-1/reserved-memory/gpu@8f200000: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.example.dt.yaml:0:0: /example-0/reserved-memory/linux,cma: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.example.dt.yaml:0:0: /example-0/reserved-memory/restricted-dma-pool@50000000: failed to match any schema with compatible: ['restricted-dma-pool']
Documentation/devicetree/bindings/dsp/fsl,dsp.example.dt.yaml:0:0: /example-1/vdev0buffer@94300000: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/remoteproc/ti,omap-remoteproc.example.dt.yaml:0:0: /example-0/reserved-memory/dsp-memory@98000000: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/remoteproc/ti,omap-remoteproc.example.dt.yaml:0:0: /example-1/reserved-memory/ipu-memory@95800000: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/remoteproc/ti,omap-remoteproc.example.dt.yaml:0:0: /example-2/reserved-memory/dsp1-memory@99000000: failed to match any schema with compatible: ['shared-dma-pool']
Documentation/devicetree/bindings/sound/google,cros-ec-codec.example.dt.yaml:0:0: /example-0/reserved-mem@52800000: failed to match any schema with compatible: ['shared-dma-pool']

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1558503

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.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml b/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
index a4bf757d6881de..6198bf6b76f0b2 100644
--- a/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
+++ b/Documentation/devicetree/bindings/reserved-memory/shared-dma-pool.yaml
@@ -56,6 +56,14 @@  properties:
       If this property is present, then Linux will use the region for
       the default pool of the consistent DMA allocator.
 
+  io-tlb-segsize:
+    type: u32
+    description: >
+      Each restricted-dma-pool can use this property to set its own
+      io_tlb_segsize. If not set, it will use the default value
+      IO_TLB_SEGSIZE defined in include/linux/swiotlb.h. The value has
+      to be a power of 2, otherwise it will fall back to IO_TLB_SEGSIZE.
+
 unevaluatedProperties: false
 
 examples: