linux-kernel - Re: [PATCH v2] clk: expand clk_ignore_unused mechanism to keep only a few clks on

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Message-ID: <20211014154307.eb3y3sh5lca4426t@pengutronix.de>
Date:   Thu, 14 Oct 2021 17:43:07 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        linux-clk@...r.kernel.org, kernel@...gutronix.de,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v2] clk: expand clk_ignore_unused mechanism to keep only
 a few clks on

Hello,

On Wed, Sep 22, 2021 at 10:15:49AM +0200, Uwe Kleine-König wrote:
> On Thu, Aug 19, 2021 at 02:14:03PM +0200, Uwe Kleine-König wrote:
> > Allow to pass an integer n that results in only keeping n unused clocks
> > enabled.
> > 
> > This helps to debug the problem if you only know that clk_ignore_unused
> > helps but you have no clue yet which clock is the culprit.
> > 
> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> 
> I consider this patch really helpful, it helped me to debug a clk issue
> without having to recompile the kernel for each bisection step.
> 
> On #kernelnewbies I got some positive feedback for it (1629304050 < j_ey>
> ukleinek: nice clk_ignore_unused patch, I added a pr_err there recently
> to print the clocks that were being disabled).

Any thoughts on this patch? Would be great if it makes it into the next
merge window.

Thanks for considering,
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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