From: shawnguo@kernel.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: imx6: enable WAIT mode hardware workaround for imx6sx
Date: Mon, 29 Aug 2016 13:44:18 +0800 [thread overview]
Message-ID: <20160829054418.GB31367@tiger> (raw)
In-Reply-To: <1471885400-9140-1-git-send-email-Anson.Huang@nxp.com>
On Tue, Aug 23, 2016 at 01:03:20AM +0800, Anson Huang wrote:
> Need to enable INT_MEM_CLK_LPM bit in CCM_CGPR for WAIT mode,
> without this bit set, if there is pending interrupt during
> ARM platform entering WAIT mode without power gating, cache
> data will be corrupted, this is a hardware workaround for WAIT
> mode and must be enabled.
>
> Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
> ---
> arch/arm/mach-imx/cpuidle-imx6sx.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-imx/cpuidle-imx6sx.c b/arch/arm/mach-imx/cpuidle-imx6sx.c
> index 3c6672b..41cdce6 100644
> --- a/arch/arm/mach-imx/cpuidle-imx6sx.c
> +++ b/arch/arm/mach-imx/cpuidle-imx6sx.c
> @@ -90,6 +90,7 @@ static struct cpuidle_driver imx6sx_cpuidle_driver = {
>
> int __init imx6sx_cpuidle_init(void)
> {
> + imx6q_set_int_mem_clk_lpm(true);
It might be the time to rename the function to imx6_set_int_mem_clk_lpm()
with a beforehand patch.
Shawn
> imx6_enable_rbc(false);
> /*
> * set ARM power up/down timing to the fastest,
> --
> 1.9.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2016-08-29 5:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-22 17:03 [PATCH] ARM: imx6: enable WAIT mode hardware workaround for imx6sx Anson Huang
2016-08-25 1:26 ` Peter Chen
2016-08-29 5:44 ` Shawn Guo [this message]
2016-08-29 6:02 ` Yongcai Huang
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