linux-kernel - Re: [PATCH v2 02/10] clk: imx95-blk-ctl: Save/restore registers when RPM routines are called

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Message-ID: <aHeVbInuGbZM7TUJ@linaro.org>
Date: Wed, 16 Jul 2025 15:05:00 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Laurentiu Palcu <laurentiu.palcu@....nxp.com>
Cc: imx@...ts.linux.dev, Abel Vesa <abelvesa@...nel.org>,
	Peng Fan <peng.fan@....com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, dri-devel@...ts.freedesktop.org,
	Frank Li <frank.li@....com>, linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 02/10] clk: imx95-blk-ctl: Save/restore registers when
 RPM routines are called

On 25-07-16 11:15:06, Laurentiu Palcu wrote:
> If runtime PM is used for the clock providers and they're part of a
> power domain, then the power domain supply will be cut off when runtime
> suspended. That means all BLK CTL registers belonging to that power
> domain will be reset. Save the registers, then, before entering suspend
> and restore them in resume.
> 
> Also, fix the suspend/resume routines and make sure we disable/enable
> the clock correctly.
> 
> Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....nxp.com>

Reviewed-by: Abel Vesa <abel.vesa@...aro.org>