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a=openpgp; fpr=11A9B68923ED03CF691FD70BD87F4F8165D79CD7 Commit 22e4e43484c4 ("arm64: dts: qcom: msm8939: Use mboxes properties for APCS") broke the boot on msm8939 platforms. The issue comes from the SMD driver failing to request the mbox channel because of circular dependencies: 1. rpm -> apcs1_mbox -> rpmcc (RPM_SMD_XO_CLK_SRC) -> rpm. 2. rpm -> apcs1_mbox -> gcc -> rpmcc (RPM_SMD_XO_CLK_SRC) -> rpm 3. rpm -> apcs1_mbox -> apcs2 -> gcc -> rpmcc (RPM_SMD_XO_CLK_SRC) -> rpm To fix this issue let's switch back to using the deprecated qcom,ipc property for the RPM node. Fixes: 22e4e43484c4 ("arm64: dts: qcom: msm8939: Use mboxes properties for = APCS") Signed-off-by: Fabien Parent Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/msm8939.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/msm8939.dtsi b/arch/arm64/boot/dts/qc= om/msm8939.dtsi index 46d9480cd464..39405713329b 100644 --- a/arch/arm64/boot/dts/qcom/msm8939.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8939.dtsi @@ -248,7 +248,7 @@ rpm: remoteproc { =20 smd-edge { interrupts =3D ; - mboxes =3D <&apcs1_mbox 0>; + qcom,ipc =3D <&apcs1_mbox 8 0>; qcom,smd-edge =3D <15>; =20 rpm_requests: rpm-requests { --- base-commit: d8abb73f584772eaafa95a447c90f1c02dba0dec change-id: 20240903-msm8939-rpm-apcs-fix-8924b8b7f593 Best regards, --=20 Fabien Parent