-Original Message-
From: u-boot-boun...@lists.denx.de
[mailto:u-boot-boun...@lists.denx.de] On Behalf Of Jason Kridner
Sent: Friday, November 05, 2010 11:24 AM
To: u-boot@lists.denx.de; beaglebo...@googlegroups.com
Cc: Kipisz, Steven
Subject: [U-Boot] [PATCH] ARMV7: OMAP3: BeagleBoard: Enable
pullups on i2c2.
From: Steve Kipisz s-kipi...@ti.com
[sp] Description missing.
Signed-off-by: Jason Kridner jkrid...@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 @@/ctr
/* 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_WKUP10x48002A80
[sp] Would be better if they are defined off OMAP34XX_CTRL_BASE
defined just above.
+
+/* Bit definition for CONTROL_PROG_IO1 */
+#define PRG_I2C2_PULLUPRESX 0x0001
+
/* 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);
[sp] Direct pointer access is not a good practice.
Can you look at struct ctrl and see whether it can be augmented/
similar approach can be used?
+
switch (get_board_revision()) {
case REVISION_AXBX:
printf(Beagle Rev Ax/Bx\n);
--
1.5.6.4
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