linux-kernel - [PATCH 0/8] dmaengine: ti: Add support for BCDMA v2 and PKTDMA v2

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Message-ID: <20250428072032.946008-1-s-adivi@ti.com>
Date: Mon, 28 Apr 2025 12:50:24 +0530
From: Sai Sree Kartheek Adivi <s-adivi@...com>
To: <peter.ujfalusi@...il.com>, <vkoul@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <nm@...com>,
        <ssantosh@...nel.org>, <s-adivi@...com>, <dmaengine@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <praneeth@...com>,
        <vigneshr@...com>, <u-kumar1@...com>, <a-chavda@...com>
Subject: [PATCH 0/8] dmaengine: ti: Add support for BCDMA v2 and PKTDMA v2

This series adds support for the BCDMA_V2 and PKTDMA_V2 which is
introduced in AM62L.

The key differences between the existing DMA and DMA V2 are:
- Absence of TISCI: Instead of configuring via TISCI calls, direct
  register writes are required.
- Autopair: There is no longer a need for PSIL pair and instead 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.

Sai Sree Kartheek Adivi (8):
  dt-bindings: dma: ti: Add document for K3 BCDMA V2
  dt-bindings: dma: ti: Add document for K3 PKTDMA V2
  drivers: dma: ti: Refactor TI K3 UDMA driver
  dmaengine: ti: k3-psil-am62l: Add AM62Lx PSIL and PDMA data
  drivers: soc: ti: k3-ringacc: handle absence of tisci
  dmaengine: ti: New driver for K3 BCDMA_V2
  dmaengine: ti: k3-udma-v2: Add support for PKTDMA V2
  dmaengine: ti: k3-udma-v2: Update glue layer to support PKTDMA V2

 .../bindings/dma/ti/k3-bcdma-v2.yaml          |   97 +
 .../bindings/dma/ti/k3-pktdma-v2.yaml         |   73 +
 drivers/dma/ti/Kconfig                        |   14 +-
 drivers/dma/ti/Makefile                       |    4 +-
 drivers/dma/ti/k3-psil-am62l.c                |  132 +
 drivers/dma/ti/k3-psil-priv.h                 |    1 +
 drivers/dma/ti/k3-psil.c                      |    1 +
 drivers/dma/ti/k3-udma-common.c               | 2974 +++++++++++++
 drivers/dma/ti/k3-udma-glue.c                 |   91 +-
 drivers/dma/ti/k3-udma-private.c              |   48 +-
 drivers/dma/ti/k3-udma-v2.c                   | 1513 +++++++
 drivers/dma/ti/k3-udma.c                      | 3751 ++---------------
 drivers/dma/ti/k3-udma.h                      |  571 ++-
 drivers/soc/ti/k3-ringacc.c                   |  162 +-
 include/linux/soc/ti/k3-ringacc.h             |    7 +
 15 files changed, 5873 insertions(+), 3566 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/dma/ti/k3-bcdma-v2.yaml
 create mode 100644 Documentation/devicetree/bindings/dma/ti/k3-pktdma-v2.yaml
 create mode 100644 drivers/dma/ti/k3-psil-am62l.c
 create mode 100644 drivers/dma/ti/k3-udma-common.c
 create mode 100644 drivers/dma/ti/k3-udma-v2.c

-- 
2.34.1