Split patch for review containing: Kconfig and Makefile changes DMA driver for Texas Instruments K3 NAVSS Unified DMA – Peripheral Root Complex (UDMA-P) The UDMA-P is intended to perform similar (but significantly upgraded) functions as the packet-oriented DMA used on previous SoC devices. The UDMA-P module supports the transmission and reception of various packet types. The UDMA-P is architected to facilitate the segmentation and reassembly of SoC DMA data structure compliant packets to/from smaller data blocks that are natively compatible with the specific requirements of each connected peripheral. Multiple Tx and Rx channels are provided within the DMA which allow multiple segmentation or reassembly operations to be ongoing. The DMA controller maintains state information for each of the channels which allows packet segmentation and reassembly operations to be time division multiplexed between channels in order to share the underlying DMA hardware. An external DMA scheduler is used to control the ordering and rate at which this multiplexing occurs for Transmit operations. The ordering and rate of Receive operations is indirectly controlled by the order in which blocks are pushed into the DMA on the Rx PSI-L interface. The UDMA-P also supports acting as both a UTC and UDMA-C for its internal channels. Channels in the UDMA-P can be configured to be either Packet-Based or Third-Party channels on a channel by channel basis. The initial driver supports: - MEM_TO_MEM (TR mode) - DEV_TO_MEM (Packet / TR mode) - MEM_TO_DEV (Packet / TR mode) - Cyclic (Packet / TR mode) - Metadata for descriptors Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx> --- drivers/dma/ti/Kconfig | 13 +++++++++++++ drivers/dma/ti/Makefile | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/dma/ti/Kconfig b/drivers/dma/ti/Kconfig index 72f3d2728178..a096f0ec3998 100644 --- a/drivers/dma/ti/Kconfig +++ b/drivers/dma/ti/Kconfig @@ -34,6 +34,19 @@ config DMA_OMAP Enable support for the TI sDMA (System DMA or DMA4) controller. This DMA engine is found on OMAP and DRA7xx parts. +config TI_K3_UDMA + tristate "Texas Instruments UDMA support" + depends on ARCH_K3 || COMPILE_TEST + depends on TI_SCI_PROTOCOL + depends on TI_SCI_INTA_IRQCHIP + select DMA_ENGINE + select DMA_VIRTUAL_CHANNELS + select TI_K3_RINGACC + select TI_K3_PSIL + help + Enable support for the TI UDMA (Unified DMA) controller. This + DMA engine is used in AM65x. + config TI_K3_PSIL bool diff --git a/drivers/dma/ti/Makefile b/drivers/dma/ti/Makefile index f8d912ad7eaf..9d787f009195 100644 --- a/drivers/dma/ti/Makefile +++ b/drivers/dma/ti/Makefile @@ -2,5 +2,6 @@ obj-$(CONFIG_TI_CPPI41) += cppi41.o obj-$(CONFIG_TI_EDMA) += edma.o obj-$(CONFIG_DMA_OMAP) += omap-dma.o +obj-$(CONFIG_TI_K3_UDMA) += k3-udma.o obj-$(CONFIG_TI_K3_PSIL) += k3-psil.o k3-psil-am654.o k3-psil-j721e.o obj-$(CONFIG_TI_DMA_CROSSBAR) += dma-crossbar.o -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
