linux-kernel - [PATCH] [27/50] ARM: pxa/cm-x300: fix V3020 RTC functionality

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Message-Id: <20110728234431.C3FA02403FF@tassilo.jf.intel.com>
Date:	Thu, 28 Jul 2011 16:44:31 -0700 (PDT)
From:	Andi Kleen <andi@...stfloor.org>
To:	grinberg@...pulab.co.il, eric.y.miao@...il.com, ak@...ux.intel.com,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	tim.bird@...sony.com
Subject: [PATCH] [27/50] ARM: pxa/cm-x300: fix V3020 RTC functionality

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Igor Grinberg <grinberg@...pulab.co.il>

[ upstream commit 6c7b3ea52e345ab614edb91d3f0e9f3bb3713871 ]

While in sleep mode the CS# and other V3020 RTC GPIOs must be driven
high, otherwise V3020 RTC fails to keep the right time in sleep mode.

Signed-off-by: Igor Grinberg <grinberg@...pulab.co.il>
Cc: stable@...nel.org
Signed-off-by: Eric Miao <eric.y.miao@...il.com>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Index: linux-2.6.35.y/arch/arm/mach-pxa/cm-x300.c
===================================================================
--- linux-2.6.35.y.orig/arch/arm/mach-pxa/cm-x300.c
+++ linux-2.6.35.y/arch/arm/mach-pxa/cm-x300.c
@@ -157,10 +157,10 @@ static mfp_cfg_t cm_x3xx_mfp_cfg[] __ini
 	GPIO99_GPIO,			/* Ethernet IRQ */
 
 	/* RTC GPIOs */
-	GPIO95_GPIO,			/* RTC CS */
-	GPIO96_GPIO,			/* RTC WR */
-	GPIO97_GPIO,			/* RTC RD */
-	GPIO98_GPIO,			/* RTC IO */
+	GPIO95_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC CS */
+	GPIO96_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC WR */
+	GPIO97_GPIO | MFP_LPM_DRIVE_HIGH,	/* RTC RD */
+	GPIO98_GPIO,				/* RTC IO */
 
 	/* Standard I2C */
 	GPIO21_I2C_SCL,
--
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