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| author | Alexander Kochetkov <al.kochet@gmail.com> | 2014-09-29 21:46:48 +0400 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-10-10 09:44:43 -0400 |
| commit | 04e2a13336f0e507ef416bbede3be92b79c46594 (patch) | |
| tree | 535caa19b473e0718f605e485e69dde274951284 /board/ti/beagle | |
| parent | af55e35d33894295cf0f2f94c050f67d05b50944 (diff) | |
| download | u-boot-04e2a13336f0e507ef416bbede3be92b79c46594.zip u-boot-04e2a13336f0e507ef416bbede3be92b79c46594.tar.gz u-boot-04e2a13336f0e507ef416bbede3be92b79c46594.tar.bz2 | |
beagleboard: Remove side effects of i2c2 pullup resisters initialization code
Fix typo of commit d4e53f063dd25e071444b87303573e7440deeb89.
i2c2 pullup resisters are controlled by bit 0 of CONTROL_PROG_IO1.
It's value after reset is 0x00100001.
In order to clear bit 0, original code write 0xfffffffe to
CONTROL_PROG_IO1 and toggle almost all default values.
Original code affect following:
* disable i2c1 pullup resisters
* increase far end load setting for many modules
* setup invalid SC/LB combination
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
CC: Tom Rini <trini@ti.com>
CC: Steve Kipisz <s-kipisz2@ti.com>
Diffstat (limited to 'board/ti/beagle')
| -rw-r--r-- | board/ti/beagle/beagle.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index 0674afd..94b99bf 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -317,9 +317,12 @@ int misc_init_r(void) struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE; struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE; bool generate_fake_mac = false; + u32 value; /* Enable i2c2 pullup resisters */ - writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1); + value = readl(&prog_io_base->io1); + value &= ~(PRG_I2C2_PULLUPRESX); + writel(value, &prog_io_base->io1); switch (get_board_revision()) { case REVISION_AXBX: |