[PATCH v3 00/17] dmaengine: ti: Add support for BCDMA v2 and PKTDMA v2
From: Sai Sree Kartheek Adivi <hidden>
Date: 2025-06-23 05:37:55
Also in:
dmaengine, linux-arm-kernel, lkml
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. Changes from v1 to v2: - Split refactoring of k3-udma driver into multiple commits - Fix bcdma v2 and pktdma v2 dt-binding examples - Fix compatibles in k3-udma-v2.c - move udma_is_desc_really_done to k3-udma-common.c as the difference between k3-udma and k3-udma-v2 implementation is minor. - remove udma_ prefix to function pointers in udma_dev - reorder the commits to first refactor the existing code completely and then introduce k3-udma-v2 related commits. - remove redundant includes in k3-udma-common.c - remove ti_sci_ dependency for k3_ringacc in Kconfig - refactor setup_resources functions to remove ti_sci_ code from common logic. link to v1: https://lore.kernel.org/linux-arm-kernel/20250428072032.946008-1-s-adivi@ti.com (local) Changes from v2 to v3: - Fix checkpatch errors & spellings. link to v2: https://lore.kernel.org/linux-arm-kernel/20250612071521.3116831-1-s-adivi@ti.com (local) Sai Sree Kartheek Adivi (17): dmaengine: ti: k3-udma: move macros to header file dmaengine: ti: k3-udma: move structs and enums to header file dmaengine: ti: k3-udma: move static inline helper functions to header file dmaengine: ti: k3-udma: move descriptor management to k3-udma-common.c dmaengine: ti: k3-udma: move ring management functions to k3-udma-common.c dmaengine: ti: k3-udma: Add variant-specific function pointers to udma_dev dmaengine: ti: k3-udma: move udma utility functions to k3-udma-common.c dmaengine: ti: k3-udma: move resource management functions to k3-udma-common.c dmaengine: ti: k3-udma: refactor resource setup functions dmaengine: ti: k3-udma: move inclusion of k3-udma-private.c to k3-udma-common.c drivers: soc: ti: k3-ringacc: handle absence of tisci dt-bindings: dma: ti: Add K3 BCDMA V2 dt-bindings: dma: ti: Add K3 PKTDMA V2 dmaengine: ti: k3-psil-am62l: Add AM62Lx PSIL and PDMA data dmaengine: ti: k3-udma-v2: 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 | 94 + .../bindings/dma/ti/k3-pktdma-v2.yaml | 72 + drivers/dma/ti/Kconfig | 14 +- drivers/dma/ti/Makefile | 6 +- 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 | 2555 ++++++++++++++ drivers/dma/ti/k3-udma-glue.c | 91 +- drivers/dma/ti/k3-udma-private.c | 48 +- drivers/dma/ti/k3-udma-v2.c | 1476 ++++++++ drivers/dma/ti/k3-udma.c | 3090 +---------------- drivers/dma/ti/k3-udma.h | 581 ++++ drivers/soc/ti/Kconfig | 1 - drivers/soc/ti/k3-ringacc.c | 184 +- include/linux/soc/ti/k3-ringacc.h | 20 + 16 files changed, 5328 insertions(+), 3038 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 base-commit: 4325743c7e209ae7845293679a4de94b969f2bef -- 2.34.1