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 --- arch/arm64/boot/dts/qcom/sm8750.dtsi | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi index 3040c02fb6e4..bd555ec9e04a 100644 --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi @@ -2076,6 +2076,8 @@ cryptobam: dma-controller@1dc4000 { <&apps_smmu 0x481 0>;

qcom,ee = <0>; + qcom,num-ees = <4>; + num-channels = <20>; qcom,controlled-remotely; };