From bf4b655c6c02bbf95bd6ebbf820e53dbd8eb4803 Mon Sep 17 00:00:00 2001 From: Steve Kipisz 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