[PATCH net-next 1/3] dt-bindings: net: snps,dwmac: Add snps,pagepool-tx-buf-quirk
From: <hidden>
Date: 2026-08-03 07:05:36
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
networking drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Nazim Amirul <redacted> Add a DT flag to enable use of page pool buffers instead of streaming skb buffers for transmit. This avoids IOMMU invalidate wait time on platforms where that cost is high, with the trade-off of copying data from the skb into dma-mapped page pool buffers. Signed-off-by: Nazim Amirul <redacted> --- Documentation/devicetree/bindings/net/snps,dwmac.yaml | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 2449311c6d28..73045511446f 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml@@ -545,6 +545,14 @@ properties: Enables the TSO feature otherwise it will be managed by MAC HW capability register. + snps,pagepool-tx-buf-quirk: + $ref: /schemas/types.yaml#/definitions/flag + description: + Enable use of page pool buffers instead of streaming buffers for transmit. + This avoids IOMMU invalidate wait time on platforms where that cost is + high, with the trade-off of copying data from the skb into dma-mapped + page pool buffers. + mdio: $ref: mdio.yaml# unevaluatedProperties: false
--
2.43.7