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PKTDMA V2 is introduced as part of AM62L. Signed-off-by: Sai Sree Kartheek Adivi --- .../bindings/dma/ti/ti,am62l-dmss-pktdma.yaml | 189 ++++++++++++++++++ 1 file changed, 189 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-pktdma.yaml diff --git a/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-pktdma.yaml b/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-pktdma.yaml new file mode 100644 index 0000000000000..caeacd4cf5ab3 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-pktdma.yaml @@ -0,0 +1,189 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2026 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/ti/ti,am62l-dmss-pktdma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments K3 DMSS PKTDMA V2 + +maintainers: + - Sai Sree Kartheek Adivi + +description: + The PKTDMA V2 is intended to perform similar functions as the packet mode + channels of K3 UDMA-P. PKTDMA V2 only includes Split channels to service + PSI-L based peripherals. + + The peripherals can be PSI-L native or legacy, non PSI-L native peripherals + with PDMAs. PDMA is tasked to act as a bridge between the PSI-L fabric and the + legacy peripheral. + +allOf: + - $ref: /schemas/dma/dma-controller.yaml# + +properties: + compatible: + const: ti,am62l-dmss-pktdma + + reg: + items: + - description: Packet DMA Control & Status + - description: Channel Realtime + - description: Ring Realtime + + reg-names: + items: + - const: gcfg + - const: chanrt + - const: ringrt + + "#dma-cells": + const: 2 + description: | + cell 1: Flow ID for the peripheral + This is the hardware flow index assigned to the peripheral. TX and RX + flow indices are mixed across the valid range. For XYMF peripherals + (SPI, CRC32) each chip-select/FIFO has a distinct flow ID; use the + flow ID for the specific direction and chip-select being requested. + + Please refer to the device documentation for the flow map. + + cell 2: ASEL value for the channel + + interrupts: + maxItems: 78 + description: + Interrupts for DMA channels. + + interrupt-names: + minItems: 78 + maxItems: 78 + items: + pattern: "^(t|r)x-([0-9]|1[0-3]|1[6-9]|2[0-9]|3[0-9]|4[0-7]|6[4-9]|7[0-9]|9[6-9]|10[0-9]|11[01])$" + description: + The name of the interrupt corresponding to the DMA flow. + TX flows use the "tx-" prefix, RX flows use the "rx-" prefix. + +required: + - compatible + - reg + - reg-names + - "#dma-cells" + - interrupts + - interrupt-names + +unevaluatedProperties: false + +examples: + - | + #include + #include + + dma-controller@485c0000 { + compatible = "ti,am62l-dmss-pktdma"; + reg = <0x485c0000 0x4000>, + <0x48900000 0x80000>, + <0x47200000 0x100000>; + reg-names = "gcfg", "chanrt", "ringrt"; + + #dma-cells = <2>; + + interrupts = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + interrupt-names = "rx-0", "tx-1", "rx-2", "tx-3", "rx-4", + "tx-5", "rx-6", "tx-7", "rx-8", "tx-9", + "rx-10", "tx-11", "rx-12", "tx-13", + "rx-16", "tx-17", "rx-18", "tx-19", + "rx-20", "tx-21", "rx-22", "tx-23", + "rx-24", "tx-25", "rx-26", "tx-27", + "rx-28", "tx-29", "rx-30", "tx-31", + "rx-32", "tx-33", "rx-34", "tx-35", + "rx-36", "tx-37", "rx-38", "tx-39", + "rx-40", "tx-41", "rx-42", "tx-43", + "rx-44", "tx-45", "rx-46", "tx-47", + "tx-64", "tx-65", "tx-66", "tx-67", + "tx-68", "tx-69", "tx-70", "tx-71", + "tx-72", "tx-73", "tx-74", "tx-75", + "tx-76", "tx-77", "tx-78", "tx-79", + "rx-96", "rx-97", "rx-98", "rx-99", + "rx-100", "rx-101", "rx-102", "rx-103", + "rx-104", "rx-105", "rx-106", "rx-107", + "rx-108", "rx-109", "rx-110", "rx-111"; + }; -- 2.54.0