Re: [BISECTED, REGRESSION] OMAP3 onenand/DMA broken

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Hi,

On Fri, Jan 03, 2020 at 09:46:58AM +0100, H. Nikolaus Schaller wrote:
> > Am 03.01.2020 um 09:17 schrieb Aaro Koskinen <aaro.koskinen@xxxxxx>:
> > When booting v5.4 (or v5.5-rc4) on N900, the console gets flooded with:
> > 
> > [    8.335754] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.365753] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.395751] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.425750] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.455749] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.485748] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.515777] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.545776] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > [    8.575775] omap2-onenand 1000000.onenand: timeout waiting for DMA
> > 
> > making the system unusable.
> 
> I can confirm that this issue exists but so far we failed to bisect
> and make a proper report.
> 
> Sometimes the system boots fine and sometimes it fails.
> 
> It happens on omap3-gta04a5one.dts only, but not with omap3-gta04a4.dts
> (both dm3730 but different NAND).

I tried three different boards (N810, N900 and N950) and it always
fails reliably.

A.



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