[U-Boot] [PATCH] ARMV7: OMAP3: BeagleBoard: Enable pullups on i2c2.

[Jason Kridner]

From: Steve Kipisz <s-kipisz2 at ti.com>


Signed-off-by: Jason Kridner <jkridner at beagleboard.org>
---
 arch/arm/include/asm/arch-omap3/omap3.h |    9 +++++++++
 board/ti/beagle/beagle.c                |    3 +++
 2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/arm/include/asm/arch-omap3/omap3.h b/arch/arm/include/asm/arch-omap3/omap3.h
index 3957c79..1860dff 100644
--- a/arch/arm/include/asm/arch-omap3/omap3.h
+++ b/arch/arm/include/asm/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)
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index dd7b6b5..6074eca 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -160,6 +160,9 @@ int misc_init_r(void)
 	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
 
+	/* Enable i2c2 pullup resisters */
+	*(ulong *)(CONTROL_PROG_IO1) &= ~(PRG_I2C2_PULLUPRESX);
+
 	switch (get_board_revision()) {
 	case REVISION_AXBX:
 		printf("Beagle Rev Ax/Bx\n");
-- 
1.5.6.4