From: Michael Durrant <mdurrant@arcturusnetworks.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] ColdFire I2C implementing I2C idle [PATCH]
Date: Tue, 19 Jan 2010 15:50:14 -0500 [thread overview]
Message-ID: <4B561B06.7020204@arcturusnetworks.com> (raw)
Signed-off-by: David Wu <davidwu@arcturusnetworks.com>
Signed-off-by: Michael Durrant <mdurrant@arcturusnetworks.com>
Patch created against u-boot-2009.11 release
drivers_i2c_fsl_i2c.patch
- need to set I2C to be idle acoording to the MCF5282 user's manual
If I2SR[IBB] is set when the I2C bus module is enabled,
execute the following code sequence before proceeding with
normal initialization code. This issues a STOP command to the
slave device, placing it in idle state as if it were just
power-cycled on.
I2CR = 0x0
I2CR = 0xA
dummy read of I2DR
I2SR = 0x0
I2CR = 0x0
--
Michael Durrant
mdurrant at arcturusnetworks.com
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next reply other threads:[~2010-01-19 20:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-19 20:50 Michael Durrant [this message]
2010-01-20 8:26 ` [U-Boot] ColdFire I2C implementing I2C idle [PATCH] Heiko Schocher
2010-01-20 18:33 ` [U-Boot] ColdFire I2C implementing I2C idle [PATCH] -- resent in git format Michael Durrant
2010-01-21 7:25 ` Heiko Schocher
2010-01-21 7:41 ` Joakim Tjernlund
2010-01-21 8:04 ` Heiko Schocher
2010-01-21 10:29 ` Wolfgang Wegner
2010-01-21 11:49 ` Heiko Schocher
2010-01-21 17:49 ` Michael Durrant
2010-01-25 8:17 ` Heiko Schocher
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