diff options
| author | Steve Kipisz <s-kipisz2@ti.com> | 2011-04-18 17:27:00 -0400 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-04-27 19:38:06 +0200 |
| commit | d4e53f063dd25e071444b87303573e7440deeb89 (patch) | |
| tree | ace2743ffe03492d789c9b4677849d748e5a4400 | |
| parent | cf073e49bc3502be1b48a0e3faf0cde9edbb89db (diff) | |
OMAP3: BeagleBoard: Enable pullups on i2c2.
This allows the reading of EEPROMS on the expansion bus without adding
external pull-ups.
Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: Steve Kipisz <s-kipisz2@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
| -rw-r--r-- | arch/arm/include/asm/arch-omap3/omap3.h | 14 | ||||
| -rw-r--r-- | board/ti/beagle/beagle.c | 4 |
2 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-omap3/omap3.h b/arch/arm/include/asm/arch-omap3/omap3.h index 3957c796f2..cc2b5415c1 100644 --- a/arch/arm/include/asm/arch-omap3/omap3.h +++ b/arch/arm/include/asm/arch-omap3/omap3.h @@ -50,6 +50,20 @@ /* CONTROL */ #define OMAP34XX_CTRL_BASE (OMAP34XX_L4_IO_BASE + 0x2000) +#ifndef __ASSEMBLY__ +/* Signal Integrity Parameter Control Registers */ +struct control_prog_io { + unsigned char res[0x408]; + unsigned int io2; /* 0x408 */ + unsigned char res2[0x38]; + unsigned int io0; /* 0x444 */ + unsigned int io1; /* 0x448 */ +}; +#endif /* __ASSEMBLY__ */ + +/* 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 89e3dbae76..2fdee7c08b 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -155,6 +155,10 @@ int misc_init_r(void) { struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE; struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; + struct control_prog_io *prog_io_base = (struct gpio *)OMAP34XX_CTRL_BASE; + + /* Enable i2c2 pullup resisters */ + writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); switch (get_board_revision()) { case REVISION_AXBX: |