Re: [PATCH v10 16/19] dmaengine: ti: k3-udma-v2: New driver for K3 BCDMA_V2

From: Vignesh Raghavendra

Date: Mon Sep 28 2026 - 04:42:12 EST


On Mon, 28 Sep 2026 08:26:22 +0530, Sai Sree Kartheek Adivi <s-adivi@xxxxxx> wrote:
> Add support for BCDMA_V2.
>
> The BCDMA_V2 is different than the existing BCDMA supported by the
> k3-udma driver.
>
> The changes in BCDMA_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@xxxxxx>

--
Vignesh