[PATCH v2 1/3] dt-bindings: dma: qcom,bam-dma: Document BAM v2.0.0 compatible
From: Kuldeep Singh
Date: Wed May 13 2026 - 15:03:58 EST
Document compatible string for bam v2.0.0 version found on kaanapali.
BAM v2.0.0 differs from the earlier v1.7.X revision in terms of register
layout and offsets, requiring a distinct compatible for correct hardware
description.
Also add a new example for BAM v2.0.0 to illustrate a more complete
configuration than the existing v1.4 example. The new example covers
64-bit address and size cells, IOMMU bindings and execution
environment–related properties required on newer platforms.
Signed-off-by: Kuldeep Singh <kuldeep.singh@xxxxxxxxxxxxxxxx>
---
.../devicetree/bindings/dma/qcom,bam-dma.yaml | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
index 6493a6968bb4..0923fb189ada 100644
--- a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml
@@ -23,6 +23,8 @@ properties:
- qcom,bam-v1.4.0
# MSM8916, SDM630
- qcom,bam-v1.7.0
+ # Kaanapali
+ - qcom,bam-v2.0.0
- items:
- enum:
# SDM845, SM6115, SM8150, SM8250 and QCM2290
@@ -118,4 +120,23 @@ examples:
#dma-cells = <1>;
qcom,ee = <0>;
};
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ dma-controller@1dc4000 {
+ compatible = "qcom,bam-v2.0.0";
+ reg = <0x0 0x01dc4000 0x0 0x22000>;
+ interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <1>;
+ iommus = <&apps_smmu 0xc0 0>, <&apps_smmu 0xc1 0>;
+ qcom,ee = <0>;
+ qcom,num-ees = <4>;
+ num-channels = <20>;
+ qcom,controlled-remotely;
+ };
+ };
...
--
2.34.1