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| author | Troy Kisky <troy.kisky@boundarydevices.com> | 2012-04-24 17:33:27 +0000 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2012-07-11 10:54:52 +0200 |
| commit | 9ca37d78a35b590c8ecc93a1ecfca2411fde5fb7 (patch) | |
| tree | fc203bcb737751b4bccabef71a46d1f80d1fa2a9 /drivers/i2c | |
| parent | 3174689be239aae5901fbc5c484a15444bbe96ea (diff) | |
| download | u-boot-imx-9ca37d78a35b590c8ecc93a1ecfca2411fde5fb7.zip u-boot-imx-9ca37d78a35b590c8ecc93a1ecfca2411fde5fb7.tar.gz u-boot-imx-9ca37d78a35b590c8ecc93a1ecfca2411fde5fb7.tar.bz2 | |
mxc_i2c: remove setting speed at each start
Other then being very weird, this code was also wrong.
For example, say I set speed to 100K. I'll read back the speed
as 85937. But the speed is really 85937.5, so we I reset
the speed to 85937, I'll get 73660.7. After a couple of transactions
my speed is now exactly 68750 so it will remain there.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 416ffee..fc68062 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -231,12 +231,6 @@ int i2c_imx_start(void) struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)I2C_BASE; unsigned int temp = 0; int result; - int speed = i2c_get_bus_speed(); - u8 clk_idx = i2c_imx_get_clk(speed); - u8 idx = i2c_clk_div[clk_idx][1]; - - /* Store divider value */ - writeb(idx, &i2c_regs->ifdr); /* Enable I2C controller */ writeb(0, &i2c_regs->i2sr); |