Re: 2nd problem with read_subpage() ?

[Artem Bityutskiy <dedekind@infradead.org>]

On Tue, 2008-07-29 at 10:50 +0100, Alexey Korolev wrote:
> Hi Artem,
> 
> > On Tue, 2008-07-29 at 12:30 +0300, Artem Bityutskiy wrote:
> > > On Tue, 2008-07-29 at 09:53 +0300, Artem Bityutskiy wrote:
> > > > Glance at nand_do_read_ops():
> > > > 
> > > > 
> > > > if (likely(sndcmd)) {
> > > >         chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
> > > >         sndcmd = 0;
> > > > }
> > > 
> > > Alexey,
> > > 
> > > my investigation showed that this "random output" command is not
> > > supported by all flashes. ST-micro NANDs seems to support it
> > > (I checked 2 manuals), while Sumsung NANDs do not (checked manual
> > > for K9XXG08UXA). This means your implementation will break many
> > > systems and should be either fixed or reverted.
> > 
> > Note, the Samsung NAND I referred is a large page device.
> > 
> AFAIK this is a standard feature for LP NANDS. I glanced at spec for
> K9XXG08UXA - device supports subpage oprations.
> 
> To check it I did this. 
> Google -> K9XXG08UXA -> the first link -> open PDF page 41. 

Ops, right, sorry for the fake alarm.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)