From: Lesly A M <leslyam@ti.com>
To: linux-omap@vger.kernel.org
Cc: Lesly A M <leslyam@ti.com>, Nishanth Menon <nm@ti.com>,
David Derrick <dderrick@ti.com>,
Samuel Ortiz <sameo@linux.intel.com>
Subject: [PATCH 3/8] omap3: pm: Correcting the sys_offmode signal polarity
Date: Sat, 26 Feb 2011 17:55:34 +0530 [thread overview]
Message-ID: <1298723139-1693-4-git-send-email-leslyam@ti.com> (raw)
In-Reply-To: <1298723139-1693-1-git-send-email-leslyam@ti.com>
Changing the polarity of the sys_offmode signal to active low,
to get a High to Low transition on the NSLEEP1 of PM IC when OMAP is
entering offmode. Because on PM IC the power resources (LDO, DCDC regulators)
associated with P1 group which is controlled by NSLEEP1 are set to sleep,
when there is transition form High to Low.
Signed-off-by: Lesly A M <leslyam@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: David Derrick <dderrick@ti.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
---
arch/arm/mach-omap2/pm34xx.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index e46f4b5..8a7c756 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -1034,6 +1034,10 @@ static int __init omap3_pm_init(void)
printk(KERN_ERR "Power Management for TI OMAP3.\n");
+ /* Changing the polarity of the sys_offmode signal to active low */
+ omap2_prm_clear_mod_reg_bits(OMAP3430_OFFMODE_POL_MASK,
+ OMAP3430_GR_MOD, OMAP3_PRM_POLCTRL_OFFSET);
+
/* XXX prcm_setup_regs needs to be before enabling hw
* supervised mode for powerdomains */
prcm_setup_regs();
--
1.7.0.4
next prev parent reply other threads:[~2011-02-26 12:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-26 12:25 [PATCH v7 0/8] omap3: pm: TWL4030 power scripts and workaround for TWL errata 27 Lesly A M
2011-02-26 12:25 ` [PATCH 1/8] omap3: pm: Fix for the TRITON sleep/wakeup sequence Lesly A M
2011-03-01 22:33 ` Kevin Hilman
2011-03-02 6:08 ` Manuel, Lesly Arackal
2011-02-26 12:25 ` [PATCH 2/8] omap3: pm: Correct the warning print during script loading Lesly A M
2011-02-26 12:25 ` Lesly A M [this message]
2011-03-01 22:35 ` [PATCH 3/8] omap3: pm: Correcting the sys_offmode signal polarity Kevin Hilman
2011-03-02 6:11 ` Manuel, Lesly Arackal
2011-02-26 12:25 ` [PATCH 4/8] omap3: pm: TWL4030 power scripts for OMAP3 boards Lesly A M
2011-02-26 12:25 ` [PATCH 5/8] omap3: pm: TWL5030 version checking Lesly A M
2011-02-28 7:24 ` Krishnamoorthy, Balaji T
2011-02-28 11:04 ` Manuel, Lesly Arackal
2011-02-28 11:24 ` Krishnamoorthy, Balaji T
2011-02-26 12:25 ` [PATCH 6/8] mfd: TWL4030: changes for TRITON Errata 27 workaround Lesly A M
2011-02-26 12:25 ` [PATCH 7/8] omap3430: Updating the board file to use TWL4030 scripts Lesly A M
2011-02-26 12:25 ` [PATCH 8/8] omap3630: " Lesly A M
2011-03-01 22:31 ` [PATCH v7 0/8] omap3: pm: TWL4030 power scripts and workaround for TWL errata 27 Kevin Hilman
2011-03-02 5:57 ` Manuel, Lesly Arackal
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