linux-kernel - Re: [PATCH] clk: samsung: exynos4: Disable ARMCLK down feature on Exynos4210 SoC

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Date:	Sun, 12 Apr 2015 21:02:12 -0700
From:	Michael Turquette <mturquette@...aro.org>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	"Bartlomiej Zolnierkiewicz" <b.zolnierkie@...sung.com>
Cc:	"Sylwester Nawrocki" <s.nawrocki@...sung.com>,
	"Krzysztof Kozlowski" <k.kozlowski@...sung.com>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Stephen Boyd" <sboyd@...eaurora.org>,
	"Tomasz Figa" <tomasz.figa@...il.com>, stable@...r.kernel.org,
	"Daniel Drake" <drake@...lessm.com>,
	"Kukjin Kim" <kgene@...nel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] clk: samsung: exynos4: Disable ARMCLK down feature on Exynos4210
 SoC

Quoting Krzysztof Kozlowski (2015-03-28 09:37:05)
> 2015-03-27 17:27 GMT+01:00 Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>:
> > Commit 42773b28e71d ("clk: samsung: exynos4: Enable ARMCLK
> > down feature") enabled ARMCLK down feature on all Exynos4
> > SoCs.  Unfortunately on Exynos4210 SoC ARMCLK down feature
> > causes a lockup when ondemand cpufreq governor is used.
> > Fix it by limiting ARMCLK down feature to Exynos4x12 SoCs.
> >
> > This patch was tested on:
> > - Exynos4210 SoC based Trats board
> > - Exynos4210 SoC based Origen board
> > - Exynos4412 SoC based Trats2 board
> > - Exynos4412 SoC based Odroid-U3 board
> >
> > Cc: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> > Cc: Daniel Drake <drake@...lessm.com>
> > Cc: Tomasz Figa <t.figa@...sung.com>
> > Cc: Kukjin Kim <kgene@...nel.org>
> > Fixes: 42773b28e71d ("clk: samsung: exynos4: Enable ARMCLK down feature")
> > Cc: <stable@...r.kernel.org> # v3.17+
> > Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> > ---
> >  drivers/clk/samsung/clk-exynos4.c |   11 +++++------
> >  1 file changed, 5 insertions(+), 6 deletions(-)
> 
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

Applied.

Thanks,
Mike

> 
> Best regards,
> Krzysztof
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