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From bf4b655c6c02bbf95bd6ebbf820e53dbd8eb4803 Mon Sep 17 00:00:00 2001
From: Steve Kipisz <s-kipisz2@ti.com>
Date: Thu, 5 Aug 2010 10:36:07 -0500
Subject: [PATCH] BeagleBoard: Enable pullups on i2c2.
---
board/ti/beagle/beagle.c | 2 ++
include/asm-arm/arch-omap3/omap3.h | 9 +++++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index cdba3dd..eeb37bc 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -163,6 +163,8 @@ int misc_init_r(void)
struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
+ /* Enable i22 pullup resisters */
+ *(ulong *)(CONTROL_PROG_IO1) &= ~(PRG_I2C2_PULLUPRESX);
beagle_identify();
printf("\nProbing for expansion boards, if none are connected you'll see a harmless I2C error.\n\n");
diff --git a/include/asm-arm/arch-omap3/omap3.h b/include/asm-arm/arch-omap3/omap3.h
index 3957c79..1860dff 100644
--- a/include/asm-arm/arch-omap3/omap3.h
+++ b/include/asm-arm/arch-omap3/omap3.h
@@ -50,6 +50,15 @@
/* CONTROL */
#define OMAP34XX_CTRL_BASE (OMAP34XX_L4_IO_BASE + 0x2000)
+/* Signal Integrity Parameter Control Registers */
+#define CONTROL_PROG_IO0 0x48002444
+#define CONTROL_PROG_IO1 0x48002448
+#define CONTROL_PROG_IO2 0x48002408
+#define CONTROL_PROG_IO_WKUP1 0x48002A80
+
+/* Bit definition for CONTROL_PROG_IO1 */
+#define PRG_I2C2_PULLUPRESX 0x00000001
+
/* UART */
#define OMAP34XX_UART1 (OMAP34XX_L4_IO_BASE + 0x6a000)
#define OMAP34XX_UART2 (OMAP34XX_L4_IO_BASE + 0x6c000)
--
1.6.6.1
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