From: Anson.Huang@nxp.com (Anson Huang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: imx6: enable WAIT mode hardware workaround for imx6sx
Date: Tue, 23 Aug 2016 01:03:20 +0800 [thread overview]
Message-ID: <1471885400-9140-1-git-send-email-Anson.Huang@nxp.com> (raw)
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);
imx6_enable_rbc(false);
/*
* set ARM power up/down timing to the fastest,
--
1.9.1
next reply other threads:[~2016-08-22 17:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-22 17:03 Anson Huang [this message]
2016-08-25 1:26 ` [PATCH] ARM: imx6: enable WAIT mode hardware workaround for imx6sx Peter Chen
2016-08-29 5:44 ` Shawn Guo
2016-08-29 6:02 ` Yongcai Huang
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