[PATCH v12 18/20] dmaengine: ti: k3-udma-v2: Add support for PKTDMA V2

Vignesh Raghavendra vigneshr at ti.com
Wed Oct 21 10:06:31 PDT 2026


On Wed, 07 Oct 2026 15:58:59 +0530, Sai Sree Kartheek Adivi <s-adivi at ti.com> wrote:
> The PKTDMA V2 is different than the existing PKTDMA supported by the
> k3-udma driver.
> 
> The changes in PKTDMA V2 are:
> - Autopair: There is no longer a need for PSIL pair and AUTOPAIR bit
>   needs to set in the RT_CTL register.
> - Static channel mapping: Each channel is mapped to a single
>   peripheral.
> - Direct IRQs: There is no INT-A and interrupt lines from DMA are
>   directly connected to GIC.
> - Remote side configuration handled by DMA. So no need to write to
>   PEER registers to START / STOP / PAUSE / TEARDOWN.
> - Unified Channel Space: Tx and Rx channels share a single register
>   space. Each channel index is specifically fixed in hardware as either
>   Tx or Rx in an interleaved manner.
> 
> [...]

Reviewed-by: Vignesh Raghavendra <vigneshr at ti.com>

-- 
Vignesh




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