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[2/8] arm64: dts: qcom: sm8450: Add missing properties for cryptobam

Message ID 20250212-bam-dma-fixes-v1-2-f560889e65d8@linaro.org (mailing list archive)
State New
Headers show
Series dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees | expand

Commit Message

Stephan Gerhold Feb. 12, 2025, 5:03 p.m. UTC 
num-channels and qcom,num-ees are required for BAM nodes without clock,
because the driver cannot ensure the hardware is powered on when trying to
obtain the information from the hardware registers. Specifying the node
without these properties is unsafe and has caused early boot crashes for
other SoCs before [1, 2].

Add the missing information from the hardware registers to ensure the
driver can probe successfully without causing crashes.

[1]: https://lore.kernel.org/r/CY01EKQVWE36.B9X5TDXAREPF@fairphone.com/
[2]: https://lore.kernel.org/r/20230626145959.646747-1-krzysztof.kozlowski@linaro.org/

Cc: stable@vger.kernel.org
Fixes: b92b0d2f7582 ("arm64: dts: qcom: sm8450: add crypto nodes")
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8450.dtsi | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 9c809fc5fa45a98ff5441a0b6809931588897243..419df72cd04b0c328756fdc484f4e46b6c325412 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -5283,6 +5283,8 @@  cryptobam: dma-controller@1dc4000 {
 			interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
 			#dma-cells = <1>;
 			qcom,ee = <0>;
+			qcom,num-ees = <4>;
+			num-channels = <16>;
 			qcom,controlled-remotely;
 			iommus = <&apps_smmu 0x584 0x11>,
 				 <&apps_smmu 0x588 0x0>,