linux-kernel - Re: [PATCH] clk: qcom: gdsc: Add a flag to skip setting power collapse bits

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Message-ID: <496d7baf4c0e7e83c54f57edf789eafc.sboyd@kernel.org>
Date: Fri, 16 Aug 2024 14:48:21 -0700
From: Stephen Boyd <sboyd@...nel.org>
To: Georgi Djakov <quic_c_gdjako@...cinc.com>, andersson@...nel.org, quic_mdtipton@...cinc.com, quic_viveka@...cinc.com
Cc: mturquette@...libre.com, linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: qcom: gdsc: Add a flag to skip setting power collapse bits

Quoting Georgi Djakov (2024-08-13 05:00:15)
> The sdm845 platforms have a hardware issue that requires keeping
> some of the MMNOC GDSCs in SW collapse mode (which is the power-on
> default). But if some driver tries to use these GDSCs and the mode
> is updated because of runtime pm calls, we may get a board hang.
> Introduce a flag to skip any updates to the power collapse settings
> for the impacted GDSCs to avoid unexpected board hangs.

Can you add a Fixes tag? And does this need to go to stable kernels?