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From: Shengjiu Wang <shengjiu.wang@gmail.com>
Date: Mon, 27 May 2024 20:36:48 +0800
Message-ID: <CAA+D8APWGk6oJJsfLhcOfyzMo7uNFABFmeF51gerSC_16xj9uQ@mail.gmail.com>
Subject: Re: [PATCH v4] clk: imx: imx8mp: Add pm_runtime support for power saving
To: Mark Brown <broonie@kernel.org>
Cc: Francesco Dolcini <francesco@dolcini.it>, Shengjiu Wang <shengjiu.wang@nxp.com>, abelvesa@kernel.org, 
	peng.fan@nxp.com, mturquette@baylibre.com, sboyd@kernel.org, 
	shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, 
	festevam@gmail.com, linux-imx@nxp.com, linux-clk@vger.kernel.org, 
	linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
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On Mon, May 27, 2024 at 8:24=E2=80=AFPM Mark Brown <broonie@kernel.org> wro=
te:
>
> On Wed, Apr 24, 2024 at 06:47:25PM +0200, Francesco Dolcini wrote:
> > On Thu, Mar 21, 2024 at 09:14:02PM +0800, Shengjiu Wang wrote:
> > > Add pm_runtime support for power saving. In pm runtime suspend
> > > state the registers will be reseted, so add registers save
> > > in pm runtime suspend and restore them in pm runtime resume.
> > >
> > > Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> > > Reviewed-by: Peng Fan <peng.fan@nxp.com>
> >
> > Is this introducing a regression?
> >
> >   800 13:50:19.713052  <6>[   16.531134] clk: Disabling unused clocks
> >   801 13:50:19.727524  <2>[   16.535413] SError Interrupt on CPU2, code=
 0x00000000bf000002 -- SError
> >   802 13:50:19.731400  <4>[   16.535421] CPU: 2 PID: 1 Comm: swapper/0 =
Not tainted 6.9.0-rc5-next-20240424 #1
> >   803 13:50:19.742514  <4>[   16.535428] Hardware name: Toradex Verdin =
iMX8M Plus on Dahlia Board (DT)
>
> I am now seeing this failure in mainline on both the above board and
> i.MX8MP-EVK.  There was a fix mentioned in the thread but it's not
> landed for -rc1, both boards crash as above.  What's the plan for
> getting this fixed, should the patch be reverted for now?

https://lore.kernel.org/all/CAPDyKFp4V8f0iyeRASSEu4YaCSz0m56=3D8ssBJ9ogSvqG=
1dzMZA@mail.gmail.com/

fixed is merged,  but may not in v6.10-rc1. Should anybody help to cherry-p=
ick?

Best regards
Shengjiu Wang