arm64: dts: qcom: sa8775p: Add missing properties for cryptobam

commit a2517331f11bd22cded60e791a8818cec3e7597a 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.org/

Cc: stable@vger.kernel.org
Fixes: 7ff3da43ef44 ("arm64: dts: qcom: sa8775p: add QCrypto nodes")
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Link: https://lore.kernel.org/r/20250212-bam-dma-fixes-v1-5-f560889e65d8@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 3394ae2d13003417a15e64c9e47833725ec779e6..8d7d157ff2f56a31a97121c882e3e0336356eda0 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -2413,6 +2413,8 @@
                        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 0x00>,
                                 <&apps_smmu 0x481 0x00>;