On Wed, Mar 6, 2013 at 11:31 AM, Marek Vasut marex@denx.de wrote:
Dear Otavio Salvador,
On Thu, Feb 28, 2013 at 7:59 PM, Fabio Estevam festevam@gmail.com wrote:
From: Fabio Estevam fabio.estevam@freescale.com
Currently the following kernel hang happens when loading a 2.6.35 kernel from Freeescale on a mx28evk board:
RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. Bus freq driver module loaded IMX usb wakeup probe usb h1 wakeup device is registered mxs_cpu_init: cpufreq init finished ...
Loading the same kernel using the bootlets from the imx-bootlets-src-10.12.01 package, the hang does not occur.
Comparing the DDR2 initialization from the bootlets code against the U-boot one, we can notice some mismatches, and after applying the same initialization into U-boot the 2.6.35 kernel can boot normally.
Also tested with 'mtest' command, which runs succesfully.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com
Acked-by: Otavio Salvador otavio@ossystems.com.br
Otavio, did you review the changes done in this patch ?
This is the setup used in FSL U-Boot and it fixes 2.6.35.3 cpufreq kernel hang; it is good enough for me to accept it. If you care enough, go ahead and check every change bit.