[PATCH] clk: samsung: exynos4: Disable ARMCLK down feature on Exynos4210 SoC

Krzysztof Kozlowski k.kozlowski at samsung.com
Sat Mar 28 09:37:05 PDT 2015

2015-03-27 17:27 GMT+01:00 Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.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 at samsung.com>
> Cc: Daniel Drake <drake at endlessm.com>
> Cc: Tomasz Figa <t.figa at samsung.com>
> Cc: Kukjin Kim <kgene at kernel.org>
> Fixes: 42773b28e71d ("clk: samsung: exynos4: Enable ARMCLK down feature")
> Cc: <stable at vger.kernel.org> # v3.17+
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
> ---
>  drivers/clk/samsung/clk-exynos4.c |   11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)

Reviewed-by: Krzysztof Kozlowski <k.kozlowski at samsung.com>

Best regards,

More information about the linux-arm-kernel mailing list