Hi Michael,
On 12/02/2015 01:00 PM, Michael Trimarchi wrote:
Hi
On Wed, Dec 2, 2015 at 8:54 PM, Fabio Estevam festevam@gmail.com wrote:
Hi Michael,
On Wed, Dec 2, 2015 at 5:37 PM, Michael Trimarchi michael@amarulasolutions.com wrote:
Can you print the sysctl & 0xF? I want to check if this workaround is really applied
In my testing I see the error with or without the ENGcm03648 workaround.
Well the workaround works if the sysctl is 0xf on the last bits, because it needs the clocks enable according to the original description.
http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/commit/drivers/mmc/i...
So if you hit this timeout without having this set, I don't think it can work
I think you're onto something.
According to the i.MX35 reference manual, which I think was the origin of this patch, the low four bits of the SYSCTL register of the SDHC5 3 - SDCLKEN 2 - PEREN 1 - HCKEN 0 - IPGEN
See page 603 of http://cache.freescale.com/files/dsp/doc/ref_manual/IMX35RM.pdf
But in the i.MX6 reference manual, the low four bits are reserved and say "Always write as 1".
See pages 5679-5680 of http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf
It appears that when this patch was ported from the Freescale version, the test for "is_usdhc" was lost.
http://git.denx.de/?p=u-boot.git;a=commitdiff;h=7a5b80297bc6cef0c10e5f57ac04...