Re: [PATCH RFC] drm/msm/mdss: keep mdp1-mem interconnect alive during suspend on SDM845

Konrad Dybcio <[email protected]> Mon, 29 Jun 2026 12:03:35 +0200

Newsgroups	org.kernel.vger.phone-devel,org.freedesktop.lists.dri-devel,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

On 6/27/26 2:18 PM, Sam Day via B4 Relay wrote:
> From: Sam Day <[email protected]>
> 
> If the peak vote for mdp1-mem is allowed to drop to zero, it seems to
> cause the fabric to collapse that path entirely, which causes the device
> to bus stall and fatally reset.

Which fabric? MMSS_NOC?

Can you experiment with setting keepalive = true/false on bcm_mmX
in drivers/interconnect/qcom/sdm845.c?

Konrad