Re: [PATCH] arm64: dts: qcom: msm8939: revert use of APCS mbox for RPM

[Konrad Dybcio]

On 4.09.2024 8:26 PM, Fabien Parent wrote:
> 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 <fabien.parent@xxxxxxxxxx>
> ---

This is fine as a stopgap solution, Bjorn can we push it in -fixes?

This platform is admittedly not of top importance.. but fixing this
eventually would be nice

#regzbot introduced: 22e4e43484c4

Konrad