diff mbox series

[6/8] arm64: dts: qcom: ipq9574: Add missing properties for cryptobam

Message ID 20250212-bam-dma-fixes-v1-6-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
Tested-by: Md Sadre Alam <quic_mdalam@quicinc.com>
Fixes: ffadc79ed99f ("arm64: dts: qcom: ipq9574: Enable crypto nodes")
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
---
 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index 9422900289725774da8cfea9848529891038e57a..3c02351fbb156a314b7911def3caeff0c14b92e4 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -378,6 +378,8 @@  cryptobam: dma-controller@704000 {
 			interrupts = <GIC_SPI 207 IRQ_TYPE_LEVEL_HIGH>;
 			#dma-cells = <1>;
 			qcom,ee = <1>;
+			qcom,num-ees = <4>;
+			num-channels = <16>;
 			qcom,controlled-remotely;
 		};