> -----Original Message----- > From: Huang Shijie [mailto:b32...@freescale.com] > Sent: Monday, December 16, 2013 11:07 AM > To: Caizhiyong > Cc: Huang Shijie; Brian Norris; David Woodhouse; Quyaxin; > linux-kernel@vger.kernel.org; linux-...@lists.infradead.org; Artem Bityutskiy; > Wanglin (Albert); David Woodhouse > Subject: Re: [PATCH] mtd: increase max page/OOB size to support 16K pagesize > NAND > > On Mon, Dec 16, 2013 at 02:03:54AM +0000, Caizhiyong wrote: > > > > > > > > There are a lot of 16K page size NAND, they are used in android system. > > > > > > > > Many NAND need read retry and data randomization, kernel does not > > > > support > this > > > feature. > > > Brian is adding the read-retry feature. > > > > > > I think the data randomization should be done by the hardware. > > > If we do it by software, it costs lot of the cpu cycles. > > > > > > > > > > Kernel also does not support synchronous NAND. > > > > > > The synchronous NAND should be supported by the nand controller driver, > > > not the kernel. > > > > Yes. Those feature should be support by NAND controller hardware and driver. > > But the driver does not know what NAND should use those feature. > > Perhaps, the NAND id table, should add something. > We can get the synchronous info from the ONFI nand. > > In actually, if you do not add this patch, i will change it too. > I have several 16K nand chips on my hands now. :)
I have not found a good way to solve these problems. I expect your patch. > > thanks > Huang Shijie > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/