Thread (7 messages) flat view 7 messages, 3 authors, 7d ago
COOLING7d

[PATCH 3/3] arm64: dts: agilex5: Enable pagepool Tx buffer quirk

From: <hidden>
Date: 2026-08-03 07:05:40
Also in: linux-arm-kernel, linux-devicetree, lkml
Subsystem: arm/socfpga architecture, the rest · Maintainers: Dinh Nguyen, Linus Torvalds

From: Nazim Amirul <redacted>

Enable snps,pagepool-tx-buf-quirk for Agilex5 gmac0/1/2. These ports
use an IOMMU, where avoiding per-packet dma map/unmap invalidate cost
improves Tx performance.

Signed-off-by: Nazim Amirul <redacted>
---
 arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
index f54767d1526e..4ce4fa091385 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
@@ -605,6 +605,7 @@ gmac0: ethernet@10810000 {
 			snps,mtl-tx-config = <&mtl_tx_emac0_setup>;
 			snps,pbl = <32>;
 			snps,tso;
+			snps,pagepool-tx-buf-quirk;
 			altr,sysmgr-syscon = <&sysmgr 0x44 0>;
 			snps,clk-csr = <0>;
 			iommus = <&smmu 1>;
@@ -751,6 +752,7 @@ gmac1: ethernet@10820000 {
 			snps,mtl-tx-config = <&mtl_tx_emac1_setup>;
 			snps,pbl = <32>;
 			snps,tso;
+			snps,pagepool-tx-buf-quirk;
 			altr,sysmgr-syscon = <&sysmgr 0x48 0>;
 			snps,clk-csr = <0>;
 			iommus = <&smmu 2>;
@@ -897,6 +899,7 @@ gmac2: ethernet@10830000 {
 			snps,mtl-tx-config = <&mtl_tx_emac2_setup>;
 			snps,pbl = <32>;
 			snps,tso;
+			snps,pagepool-tx-buf-quirk;
 			altr,sysmgr-syscon = <&sysmgr 0x4c 0>;
 			snps,clk-csr = <0>;
 			iommus = <&smmu 3>;
-- 
2.43.7
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