On 12/29/25 12:57 PM, Krzysztof Kozlowski wrote:
Bindings always required "qcom,num-ees" and "num-channels" properties, as reported by dtbs_check:
sm8750-mtp.dtb: dma-controller@1dc4000 (qcom,bam-v1.7.4): 'anyOf' conditional failed, one must be fixed: 'qcom,powered-remotely' is a required property 'num-channels' is a required property 'qcom,num-ees' is a required property 'clocks' is a required property 'clock-names' is a required property
However since commit 5068b5254812 ("dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees") missing properties are actually fatal and BAM does not probe:
bam-dma-engine 1dc4000.dma-controller: num-channels unspecified in dt bam-dma-engine 1dc4000.dma-controller: probe with driver bam-dma-engine failed with error -22
Fixes: eeb0f3e4ea67 ("arm64: dts: qcom: sm8750: Add QCrypto nodes") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@oss.qualcomm.com
Reviewed-by: Konrad Dybcio konrad.dybcio@oss.qualcomm.com
Konrad