linux-kernel - Re: [PATCH] media: iris: vpu3x: Add MNoC low power handshake during hardware power-off

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Message-ID: <af4cd1f0-9f3a-4eb9-8cd4-ad20506c7a9b@linaro.org>
Date: Tue, 12 Aug 2025 10:00:51 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Abhinav Kumar <abhinav.kumar@...ux.dev>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH] media: iris: vpu3x: Add MNoC low power handshake during
 hardware power-off

On 12/08/2025 08:48, Dikshita Agarwal wrote:
> Add the missing write to AON_WRAPPER_MVP_NOC_LPI_CONTROL before
> reading the LPI status register. Introduce a handshake loop to ensure
> MNoC enters low power mode reliably during VPU3 hardware power-off with
> timeout handling.

Can you confirm this is the sequence you want for sm8750 also ?

---
bod