> From: Scott Wood <scottw...@freescale.com> > Subject: Re: MPC8313: fsl_elbc_nand and MDR > To: "Ron Madrid" <ron_mad...@sbcglobal.net> > Cc: linuxppc-...@ozlabs.org > Date: Monday, April 26, 2010, 11:34 AM > Ron Madrid wrote: > > I am having what appears to be a little conflict > > with this driver, particularly with the MDR. My > > hardware uses NAND flash and an FPGA connected > > through the UPM. After the kernel is up and > > running, sometimes I cannot verify the data in > > the UPM RAM array. I am guessing right now that > > this is due to a use conflict between my > > application and the fsl_elbc_nand driver both > > trying to use the MDR at once. > > > > Is there currently any sort of coordination that > > exists for the MDR in the fsl_elbc_nand driver? > > I have been looking through the code and have > > not been able to find any. > > There is not yet any such coordination. The current > UPM code does not use MDR that I can see.
When you say current UPM code are you talking about fsl_upm.c? Cause that's only for a NAND device on the UPM right? If there's different code, I don't know where it is. > > Any ideas on how to solve this would be > > appreciated as well. > > Probably just add a mutex that protects the shared > resources. That's what I thought might need to happen. Ron _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
