6.12-stable review patch. If anyone has any objections, please let me know.
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From: Stephan Gerhold stephan.gerhold@linaro.org
commit 663cd2cad36da23cf1a3db7868fce9f1a19b2d61 upstream.
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...
Cc: stable@vger.kernel.org Fixes: 433477c3bf0b ("arm64: dts: qcom: sm8550: add QCrypto nodes") Signed-off-by: Stephan Gerhold stephan.gerhold@linaro.org Link: https://lore.kernel.org/r/20250212-bam-dma-fixes-v1-3-f560889e65d8@linaro.or... Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 ++ 1 file changed, 2 insertions(+)
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi @@ -1952,6 +1952,8 @@ 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>;