Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2010-01-16 Thread Artem Bityutskiy
On Mon, 2010-01-11 at 12:00 +0530, Vimal Singh wrote: > On Sun, Jan 10, 2010 at 2:16 PM, Artem Bityutskiy wrote: > > On Thu, 2009-12-31 at 17:50 +0530, Vimal Singh wrote: > >> There is a bug in nand prefetch read routine, which comes into effect > >> only if nand device is a 16-bit device (as we h

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2010-01-10 Thread Vimal Singh
On Sun, Jan 10, 2010 at 2:16 PM, Artem Bityutskiy wrote: > On Thu, 2009-12-31 at 17:50 +0530, Vimal Singh wrote: >> There is a bug in nand prefetch read routine, which comes into effect >> only if nand device is a 16-bit device (as we have in zoom boards). >> This bug is effective only with below

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2010-01-10 Thread Artem Bityutskiy
On Thu, 2009-12-31 at 17:50 +0530, Vimal Singh wrote: > There is a bug in nand prefetch read routine, which comes into effect > only if nand device is a 16-bit device (as we have in zoom boards). > This bug is effective only with below combination of conditions: > 1. nand deivce, in use, is a 16 bi

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2010-01-02 Thread Steve Sakoman
On Thu, Dec 31, 2009 at 4:20 AM, Vimal Singh wrote: > On Wed, Dec 30, 2009 at 3:17 AM, Steve Sakoman wrote: >> On Tue, Dec 29, 2009 at 12:38 PM, Steve Sakoman wrote: >> >>> I can confirm that this issue exists on Overo too.  Sadly, switching >>> to 16 bit reads does not fix the issue for me.  I'

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2009-12-31 Thread Vimal Singh
On Wed, Dec 30, 2009 at 3:17 AM, Steve Sakoman wrote: > On Tue, Dec 29, 2009 at 12:38 PM, Steve Sakoman wrote: > >> I can confirm that this issue exists on Overo too.  Sadly, switching >> to 16 bit reads does not fix the issue for me.  I'll start digging to >> see if I can find what's broken. > >

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2009-12-29 Thread Steve Sakoman
On Tue, Dec 29, 2009 at 12:38 PM, Steve Sakoman wrote: > I can confirm that this issue exists on Overo too. Sadly, switching > to 16 bit reads does not fix the issue for me. I'll start digging to > see if I can find what's broken. I can also confirm that there are days when I am not even capab

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2009-12-29 Thread Steve Sakoman
On Wed, Dec 23, 2009 at 9:44 AM, Tony Lindgren wrote: > * Vimal Singh [091223 01:32]: >> In omap nand driver we used to do 32-bit reads (in function >> omap_read_buf_pref, using 'ioread32_rep' i.e.: __raw_readsl), and it >> was working fine till some time back. But now, somehow, this has got >> s

Re: Issue in oamp nand driver with 32-bit reads in prefetch mode

2009-12-23 Thread Tony Lindgren
* Vimal Singh [091223 01:32]: > In omap nand driver we used to do 32-bit reads (in function > omap_read_buf_pref, using 'ioread32_rep' i.e.: __raw_readsl), and it > was working fine till some time back. But now, somehow, this has got > some problem. Reads are not being done successfully, and drive