Messages in this thread | | | From | Chris Packham <> | Subject | Re: pxa3xx-nand failing to find device on linux-next | Date | Thu, 25 May 2017 22:12:12 +0000 |
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On 25/05/17 18:19, Boris Brezillon wrote: > Le Wed, 24 May 2017 22:58:53 +0000, > Chris Packham <Chris.Packham@alliedtelesis.co.nz> a écrit : > >> On 25/05/17 10:36, Boris Brezillon wrote: >>> Le Wed, 24 May 2017 22:03:52 +0000, >>> Chris Packham <Chris.Packham@alliedtelesis.co.nz> a écrit : >>> >>>> On 24/05/17 23:25, Boris Brezillon wrote: >>>>> On Wed, 24 May 2017 13:23:01 +0200 >>>>> Boris Brezillon <boris.brezillon@free-electrons.com> wrote: >>>>> >>>>>> Hi Chris, >>>>>> >>>>>> On Wed, 24 May 2017 09:36:56 +0000 >>>>>> Chris Packham <Chris.Packham@alliedtelesis.co.nz> wrote: >>>>>> >>>>>>> On 23/05/17 17:27, Chris Packham wrote: >>>>>>>> Hi, >>>>>>>> >>>>>>>> I'm doing some testing on linux-next and I'm finding that my nand flash >>>>>>>> has disappeared. >>>>>>>> >>>>>>>> pxa3xx-nand f10d0000.flash: This platform can't do DMA on this device >>>>>>>> pxa3xx-nand f10d0000.flash: non-supported command ef >>>>>>>> pxa3xx-nand f10d0000.flash: non-supported command ee >>>>>>>> pxa3xx-nand f10d0000.flash: non-supported command ef >>>>>>>> pxa3xx-nand f10d0000.flash: non-supported command ee >>>>>>>> On-die ECC forcefully enabled, not supported >>>>>>>> nand: No NAND device found >>>>>>>> pxa3xx-nand f10d0000.flash: failed to scan nand at cs 0 >>>>>>>> >>>>>>>> This was working around 4.11. I'll try to do some more digging tomorrow >>>>>>>> to narrow down a failure point but I thought I'd send this out now just >>>>>>>> in case it rings any bells. >>>>>>>> >>>>>>>> The board I'm using (DB-88F6820-AMC) is unfortunately out-of tree but it >>>>>>>> should be pretty close to the armada-388-db. I can make my dts available >>>>>>>> if it's helpful. >>>>>>> >>>>>>> Still works on 4.12-rc2. Fails on next-20170524. >>>>>>> >>>>>>> This appears to be due to commit b566d9c055de ("mtd: nand: add support >>>>>>> for Micron on-die ECC"). Which based on the description seems intentional. >>>>>>> >>>>>>> Since I have access to a hardware platform that has a micron flash with >>>>>>> ECC forcefully enabled how can I help to get this implemented. >>>>>> >>>>>> Can you try with this patch applied [1]? >>>>> >>>>> Sorry, wrong patch. Can you try this one [1] instead? >>>>> >>>>> [1]http://code.bulix.org/pkfhmi-135875 >>>>> >>>> >>>> With the patch above the chip is detected but ubifs is unhappy >>> >>> Hm, weird. And if you revert my both Thomas patch and mine, what do you >>> get? >> >> Seems to work just fine. > > Okay. Let's try with something simpler then. Can you test the following > patch? > > --->8--- > From 0a0eaa39ea9b19191ae0c31ff3625c224a8a55f2 Mon Sep 17 00:00:00 2001 > From: Boris Brezillon <boris.brezillon@free-electrons.com> > Date: Thu, 25 May 2017 08:15:15 +0200 > Subject: [PATCH] mtd: nand: pxa3xx: Implement failing > ->onfi_{set,get}_features() stubs > > Implement stubs returning -ENOTSUPP for ->onfi_{set,get}_features() so > that we don't let the core think we are supporting the GET/SET FEATURES > operation. > > Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> > ---
Yep that seems to work.
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