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[3/8] arm64: dts: qcom: sm8550: Add missing properties for cryptobam

Message ID 20250212-bam-dma-fixes-v1-3-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: 433477c3bf0b ("arm64: dts: qcom: sm8550: add QCrypto nodes")
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index eac8de4005d82f246bc50f64f09515631d895c99..ac3e00ad417719be2885d76d3197f96137848337 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -1957,6 +1957,8 @@  cryptobam: dma-controller@1dc4000 {
 			interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
 			#dma-cells = <1>;
 			qcom,ee = <0>;
+			qcom,num-ees = <4>;
+			num-channels = <20>;
 			qcom,controlled-remotely;
 			iommus = <&apps_smmu 0x480 0x0>,
 				 <&apps_smmu 0x481 0x0>;