From: Wenyou Yang <wenyou.yang@atmel.com>
To: <nicolas.ferre@atmel.com>, <linux@arm.linux.org.uk>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<alexandre.belloni@free-electrons.com>,
<sylvain.rochet@finsecur.com>, <peda@axentia.se>,
<sergei.shtylyov@cogentembedded.com>, <linux@maxim.org.za>,
<wenyou.yang@atmel.com>,
Patrice Vilchez <patrice.vilchez@atmel.com>
Subject: [PATCH v2 2/3] pm: at91: pm_suspend: MOR register KEY was missing
Date: Wed, 28 Jan 2015 10:23:22 +0800 [thread overview]
Message-ID: <1422411802-13207-1-git-send-email-wenyou.yang@atmel.com> (raw)
In-Reply-To: <1422411707-10945-1-git-send-email-wenyou.yang@atmel.com>
From: Patrice Vilchez <patrice.vilchez@atmel.com>
Because writing the MOR register requires the PASSWD(0x37),
if missed, the write operation will be aborted.
Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
---
arch/arm/mach-at91/pm_suspend.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mach-at91/pm_suspend.S b/arch/arm/mach-at91/pm_suspend.S
index aed6903..311cc23 100644
--- a/arch/arm/mach-at91/pm_suspend.S
+++ b/arch/arm/mach-at91/pm_suspend.S
@@ -224,6 +224,7 @@ sdr_sr_done:
/* Turn off the main oscillator */
ldr tmp1, [pmc, #AT91_CKGR_MOR]
bic tmp1, tmp1, #AT91_PMC_MOSCEN
+ orr tmp1, tmp1, #AT91_PMC_KEY
str tmp1, [pmc, #AT91_CKGR_MOR]
skip_disable_main_clock:
@@ -236,6 +237,7 @@ skip_disable_main_clock:
/* Turn on the main oscillator */
ldr tmp1, [pmc, #AT91_CKGR_MOR]
orr tmp1, tmp1, #AT91_PMC_MOSCEN
+ orr tmp1, tmp1, #AT91_PMC_KEY
str tmp1, [pmc, #AT91_CKGR_MOR]
wait_moscrdy
--
1.7.9.5
next prev parent reply other threads:[~2015-01-28 2:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-28 2:21 [PATCH v2 0/3] AT91 pm improvements for 3.20 Wenyou Yang
2015-01-28 2:22 ` [PATCH v2 1/3] pm: at91: pm_suspend: add the WFI support for ARMv7 Wenyou Yang
2015-01-28 2:23 ` Wenyou Yang [this message]
2015-01-28 2:24 ` [PATCH v2 3/3] pm: at91: add disable/enable the L1/L2 cache while suspend/resume Wenyou Yang
2015-01-28 10:09 ` Sergei Shtylyov
2015-01-29 2:22 ` Yang, Wenyou
2015-01-29 11:34 ` Russell King - ARM Linux
2015-01-30 7:32 ` Yang, Wenyou
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