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Peripheral DMA requests are not hard-wired to these channels; > they are routed through the CHIP_CTRL13/14/15 DMA_MAP fields. > > This series adds support for that DMA request router. > > Patch 1 adds the DT binding constants for the peripheral request IDs. > Patch 2 adds the DT binding documentation for the DMA mux. > Patch 3 adds the driver, Kconfig symbol and Makefile entry. > > The driver registers with of_dma_router_register(). In the route > allocation callback it validates the > specifier, programs the SoC-specific route register, and forwards > to the parent CMC DMA controller. Is it possible use standard mux interface? drivers/mux/mmio.c Frank > > Thanks. > Binbin. > > Binbin Zhou (3): > dt-bindings: dma: loongson: Add Loongson-2 DMA mux request IDs > dt-bindings: dma: loongson: Add Loongson-2K0300 DMA mux support > dmaengine: loongson: Add Loongson-2K0300 APB DMA mux driver > > .../dma/loongson,ls2k0300-dmamux.yaml | 49 +++ > MAINTAINERS | 3 + > drivers/dma/loongson/Kconfig | 13 + > drivers/dma/loongson/Makefile | 1 + > drivers/dma/loongson/loongson2-apb-dmamux.c | 380 ++++++++++++++++++ > .../dt-bindings/dma/loongson,ls2k-dmamux.h | 56 +++ > 6 files changed, 502 insertions(+) > create mode 100644 Documentation/devicetree/bindings/dma/loongson,ls2k0300-dmamux.yaml > create mode 100644 drivers/dma/loongson/loongson2-apb-dmamux.c > create mode 100644 include/dt-bindings/dma/loongson,ls2k-dmamux.h > > > base-commit: 0a8dda0a15d3926422d286567f945a05328a4ac6 > -- > 2.52.0 >