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This is also not supported in Tegra264 BPMP. Therefore mark 'reset' >> and 'reset-names' properties as required only for devices prior to >> Tegra264. >> >> This also necessitates that the Tegra264 compatible to be standalone and >> cannot have the fallback compatible of Tegra186. Since there is no >> functional impact, we keep reset as required for Tegra234 to avoid >> breaking the ABI. >> >> Signed-off-by: Akhil R >> --- >> .../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 22 ++++++++++++++----- >> 1 file changed, 16 insertions(+), 6 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml >> index 1e7b5ddd4658..34c9b41aecfc 100644 >> --- a/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml >> +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra186-gpc-dma.yaml >> @@ -16,16 +16,13 @@ maintainers: >> - Rajesh Gumasta >> - Akhil R >> >> -allOf: >> - - $ref: dma-controller.yaml# >> - >> properties: >> compatible: >> oneOf: >> + - const: nvidia,tegra264-gpcdma >> - const: nvidia,tegra186-gpcdma > > use enum > > - enum: > - nvidia,tegra186-gpcdma > - nvidia,tegra264-gpcdma > >> - items: >> - enum: >> - - nvidia,tegra264-gpcdma >> - nvidia,tegra234-gpcdma >> - nvidia,tegra194-gpcdma >> - const: nvidia,tegra186-gpcdma >> @@ -65,12 +62,25 @@ required: >> - compatible >> - reg >> - interrupts >> - - resets >> - - reset-names >> - "#dma-cells" >> - iommus >> - dma-channel-mask >> >> +allOf: >> + - $ref: dma-controller.yaml# >> + - if: >> + properties: >> + compatible: >> + contains: >> + enum: >> + - nvidia,tegra186-gpcdma >> + - nvidia,tegra194-gpcdma >> + - nvidia,tegra234-gpcdma > > nvidia,tegra234-gpcdma must have fallback nvidia,tegra186-gpcdma, so > needn't nvidia,tegra234-gpcdma here. I guess the same is true for tegra194 as well. Jon -- nvpublic