Hi,
i found the problem. The Pad Mux Register (0x20E008C and 0x20E0090) are
not initialised. In both registers is a 0x00000005 (reset value),
instead of 0x00000016. I think, i must specify the value of the mux
register in the device tree, too. How can i do this?
Thank in advance,
Marcel
md 0x20E008C-0x20E0093
On 08.05.2015 07:12, Sascha Hauer wrote:
On Thu, May 07, 2015 at 01:24:19PM +0200, Marcel Behlau wrote:
Hi,
many thanks for your help. I activated the i2c devices in the device
tree, the pinctrl is already done in the imx6q.dtsi, which is
included. The used pins are identically with the used pins on the
SBC. devinfo told me, that the driver "i2c-fsl" is loaded. After
rebuild barebox, it's possible to probe the bus, but the command
only answered with an timeout:
barebox@Phytec phyFLEX-i.MX6 Quad Carrier-Board:/ i2c_probe 1 83 83
probing i2c range 0x53 - 0x53 :
i2c2: <i2c_fsl_bus_busy> timeout waiting for I2C bus busy
I *think* this means that the levels on the bus do not properly follow
what the controller wants to do. Maybe pullup missing? An oscilloscope
might help here.
Sascha
--
Dipl. Ing (FH) Marcel Behlau
(Software Developer)
ELFIN GmbH
Siegburger Straße 215
50679 Köln
Germany
Tel: +49 (221) 6778932-0
Fax: +49 (221) 6778932-2
marcel.behlau@xxxxxxxx
www.elfin.de
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