[PATCH v2 13/17] dt-bindings: dma: ti: Add document for K3 PKTDMA V2

Sai Sree Kartheek Adivi
2025-06-12T07:46:10Z

New binding document for
Texas Instruments K3 Packet DMA (PKTDMA) V2.

PKTDMA V2 is introduced as part of AM62L.

Signed-off-by: Sai Sree Kartheek Adivi <s-adivi@ti.com>
---
.../bindings/dma/ti/k3-pktdma-v2.yaml | 73 +++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/ti/k3-pktdma-v2.yaml

diff --git a/Documentation/devicetree/bindings/dma/ti/k3-pktdma-v2.yaml b/Documentation/devicetree/bindings/dma/ti/k3-pktdma-v2.yaml
new file mode 100644
index 0000000000000..baaf13a299297
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti/k3-pktdma-v2.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2024-2025 Texas Instruments Incorporated
+# Author: Sai Sree Kartheek Adivi <s-adivi@ti.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/ti/k3-pktdma-v2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 DMSS PKTDMA V2
+
+maintainers:
+ - Sai Sree Kartheek Adivi <s-adivi@ti.com>
+
+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: Channel number for the peripheral
+
+ Please refer to the device documentation for the channel map.
+
+ cell 2: ASEL value for the channel
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - "#dma-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ cbass_main {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ dma-controller@485c0000 {
+ compatible = "ti,dmss-pktdma-v2";
+ reg = <0x00 0x485c0000 0x00 0x4000>,
+ <0x00 0x48900000 0x00 0x80000>,
+ <0x00 0x47200000 0x00 0x100000>;
+ reg-names = "gcfg", "chanrt", "ringrt";
+ #dma-cells = <2>;
+ };
+ };
--
2.34.1