[PATCH v7 13/19] dt-bindings: dma: ti: Add K3 BCDMA V2
Sai Sree Kartheek Adivi
s-adivi at ti.com
Fri Jul 24 03:20:46 PDT 2026
New binding document for Texas Instruments K3 Block Copy DMA (BCDMA) V2.
BCDMA V2 is introduced as part of AM62L.
Signed-off-by: Sai Sree Kartheek Adivi <s-adivi at ti.com>
---
.../bindings/dma/ti/ti,am62l-dmss-bcdma.yaml | 212 ++++++++++++++++++
1 file changed, 212 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-bcdma.yaml
diff --git a/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-bcdma.yaml b/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-bcdma.yaml
new file mode 100644
index 0000000000000..4e676d30e6bef
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti/ti,am62l-dmss-bcdma.yaml
@@ -0,0 +1,212 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2026 Texas Instruments Incorporated
+# Author: Sai Sree Kartheek Adivi <s-adivi at ti.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/ti/ti,am62l-dmss-bcdma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 DMSS BCDMA V2
+
+maintainers:
+ - Sai Sree Kartheek Adivi <s-adivi at ti.com>
+
+description:
+ The BCDMA V2 is intended to perform similar functions as the TR
+ mode channels of K3 UDMA-P.
+ BCDMA V2 includes block copy channels and Split channels.
+
+ Block copy channels mainly used for memory to memory transfers, but with
+ optional triggers a block copy channel can service peripherals by accessing
+ directly to memory mapped registers or area.
+
+ Split channels can be used 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:
+ - $ref: /schemas/dma/dma-controller.yaml#
+
+properties:
+ compatible:
+ const: ti,am62l-dmss-bcdma
+
+ reg:
+ items:
+ - description: BCDMA Control & Status Registers region
+ - description: Block Copy Channel Realtime Registers region
+ - description: Channel Realtime Registers region
+ - description: Ring Realtime Registers region
+
+ reg-names:
+ items:
+ - const: gcfg
+ - const: bchanrt
+ - const: chanrt
+ - const: ringrt
+
+ "#dma-cells":
+ const: 4
+ description: |
+ cell 1: Trigger type for the channel
+ 0 - disable / no trigger
+ 1 - internal channel event
+ 2 - external signal
+ 3 - timer manager event
+
+ cell 2: parameter for the trigger:
+ if cell 1 is 0 (disable / no trigger):
+ Unused, ignored
+ if cell 1 is 1 (internal channel event):
+ channel number whose TR event should trigger the current channel.
+ if cell 1 is 2 or 3 (external signal or timer manager event):
+ index of global interfaces that come into the DMA.
+
+ Please refer to the device documentation for global interface indexes.
+
+ cell 3: Channel ID for the peripheral
+ This is the mapped_channel_id assigned to the peripheral in the PSI-L
+ endpoint map. For XYMF peripherals (SPI, CRC32) each chip-select/FIFO
+ has a distinct channel ID; use the channel ID for the specific
+ direction and chip-select being requested. Use 0 for triggered
+ block-copy channels (cell 1 != 0).
+
+ Please refer to the device documentation for the channel map.
+
+ cell 4: ASEL value for the channel
+
+ interrupts:
+ minItems: 75
+ maxItems: 75
+ description:
+ Interrupts for DMA channels.
+
+ interrupt-names:
+ minItems: 75
+ maxItems: 75
+ items:
+ pattern: "^chan([0-9]|1[0-3]|1[6-9]|2[0-9]|3[0-9]|4[0-7]|4[89]|5[0-3]|6[4-8]|8[01]|12[89]|13[0-9]|14[0-3])$"
+ description:
+ The name of the interrupt corresponding to the DMA channel.
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - "#dma-cells"
+ - interrupts
+ - interrupt-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ dma-controller at 485c4000 {
+ compatible = "ti,am62l-dmss-bcdma";
+ reg = <0x485c4000 0x4000>,
+ <0x48880000 0x10000>,
+ <0x48800000 0x80000>,
+ <0x47000000 0x200000>;
+ reg-names = "gcfg", "bchanrt", "chanrt", "ringrt";
+
+ #dma-cells = <4>;
+
+ interrupts = <GIC_SPI 352 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 353 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 356 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 357 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 360 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 361 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 364 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 365 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 368 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 369 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 372 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 373 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 376 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 377 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 325 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 328 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 329 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 332 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 333 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 384 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 385 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 386 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 387 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 388 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 389 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 482 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 482 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 548 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 548 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 516 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 517 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 518 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 519 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 520 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 521 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 522 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 523 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 524 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 525 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 526 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 527 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 528 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 529 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 530 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 531 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "chan0", "chan1", "chan2", "chan3", "chan4",
+ "chan5", "chan6", "chan7", "chan8", "chan9",
+ "chan10", "chan11", "chan12", "chan13",
+ "chan16", "chan17", "chan18", "chan19",
+ "chan20", "chan21", "chan22", "chan23",
+ "chan24", "chan25", "chan26", "chan27",
+ "chan28", "chan29", "chan30", "chan31",
+ "chan32", "chan33", "chan34", "chan35",
+ "chan36", "chan37", "chan38", "chan39",
+ "chan40", "chan41", "chan42", "chan43",
+ "chan44", "chan45", "chan46", "chan47",
+ "chan48", "chan49", "chan50", "chan51",
+ "chan52", "chan53", "chan64", "chan65",
+ "chan66", "chan80", "chan81", "chan67",
+ "chan68", "chan128", "chan129", "chan130",
+ "chan131", "chan132", "chan133", "chan134",
+ "chan135", "chan136", "chan137", "chan138",
+ "chan139", "chan140", "chan141", "chan142",
+ "chan143";
+ };
--
2.54.0
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