[U-Boot-Users] i2c_set_bus_num
Dongying_Xu at us.alphanetworks.com
Dongying_Xu at us.alphanetworks.com
Thu Mar 29 20:51:36 CEST 2007
Timur,
Thanks. It looks just a matter of time.
dongy
Timur Tabi <timur at freescale.com>
03/29/2007 11:11 AM
To: Dongying_Xu at us.alphanetworks.com
cc: Kim Phillips <kim.phillips at freescale.com>,
u-boot-users at lists.sourceforge.net
Subject: Re: [U-Boot-Users] i2c_set_bus_num
Dongying_Xu at us.alphanetworks.com wrote:
>
> Kim,
>
> Thanks. When I defined CFG_SPD_BUS_NUM 1 in my header file, things are
> much better. Though I don't understand why this definition will help.
> I read the "Initial Stack, Global Data" part in Readme, It looks that
> Initialized global data is read-only, if this is the case, then It
> should fail when I try to set I2c bus num to 0, but it worked. Could
> you please explain a little bit? Thanks
If you call i2c_set_bus_num() before DDR is initialized, it will fail.
If you call i2c_set_bus_num() after DDR is initialized, it will succeed.
--
Timur Tabi
Linux Kernel Developer @ Freescale
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