arm64: dts: ti: k3-am64-main: Add CPSW DT node

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Add CPSW3g DT node with two external ports, MDIO and CPTS support. For
CPSW3g DMA channels the ASEL is set to 15 (AM642x per DMA channel coherency
feature), so that CPSW DMA channel participates in Coherency and thus avoid
need to cache maintenance for SKBs. This improves bidirectional TCP
performance by up to 100Mbps (on 1G link).

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210304211038.12511-2-grygorii.strashko@ti.com

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Vignesh Raghavendra 2021-03-04 23:10:35 +02:00 • committed by Nishanth Menon

parent b605d4f66f

commit 3753b12877

2 changed files with 76 additions and 0 deletions

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arch/arm64/boot/dts/ti/k3-am64-main.dtsi

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arch/arm64/boot/dts/ti/k3-am64.dtsi

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