From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>,
Tudor Ambarus <tudor.ambarus@microchip.com>,
"marek.vasut@gmail.com" <marek.vasut@gmail.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"richard@nod.at" <richard@nod.at>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"nicolas.ferre@microchip.com" <nicolas.ferre@microchip.com>,
"cyrille.pitchen@microchip.com" <cyrille.pitchen@microchip.com>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Cristian.Birsan@microchip.com" <Cristian.Birsan@microchip.com>
Subject: Re: [PATCH v3 1/2] mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories
Date: Wed, 17 Oct 2018 09:17:38 +0200 [thread overview]
Message-ID: <20181017091738.2619dd06@bbrezillon> (raw)
In-Reply-To: <20181017091045.124e0266@bbrezillon>
On Wed, 17 Oct 2018 09:10:45 +0200
Boris Brezillon <boris.brezillon@bootlin.com> wrote:
> On Wed, 17 Oct 2018 09:07:24 +0200
> Boris Brezillon <boris.brezillon@bootlin.com> wrote:
>
> > On Wed, 17 Oct 2018 02:07:43 +0000
> > Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com> wrote:
> >
> > > >
> > > Actually there is no entry of s25fs512s in current spi-nor.c file.
> > > For my connected flash part, jedec ID read points to s25fl512s. I
> > > have asked my board team to confirm the name of exact connected flash
> > > part. When I check the data sheet of s25fs512s, it also points to the
> > > same Jedec ID information. { "s25fl512s", INFO(0x010220, 0x4d00, 256
> > > * 1024, 256, ....}
> > >
> > > But as stated earlier, if I skip reading SFDP or read using 1-1-1
> > > protocol then read are always correct. For 1-4-4 protocol read are
> > > wrong and on further debugging found that Read code of 0x6C is being
> > > send as opcode instead of 0xEC.
> > >
> > > If I revert this patch, reads are working fine.
> >
> > Can you try with the following patch?
> >
>
> Hm, nevermind. The problem is actually not related to 4B vs non-4B mode
> but 1-1-4 vs 1-4-4 modes.
>
Can you add traces in this loop [1] to see which features are flagged
as supported and which ones are not.
[1]https://elixir.bootlin.com/linux/v4.19-rc8/source/drivers/mtd/spi-nor/spi-nor.c#L2259
next prev parent reply other threads:[~2018-10-17 7:17 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-11 15:40 [PATCH v3 0/2] add support to non-uniform SFDP SPI NOR flash memories Tudor Ambarus
2018-09-11 15:40 ` [PATCH v3 1/2] mtd: spi-nor: " Tudor Ambarus
2018-09-11 18:55 ` Marek Vasut
2018-09-17 17:03 ` Tudor Ambarus
2018-10-16 9:51 ` Yogesh Narayan Gaur
2018-10-16 12:04 ` Boris Brezillon
2018-10-16 12:17 ` Boris Brezillon
2018-10-17 1:54 ` Yogesh Narayan Gaur
2018-10-16 15:14 ` Tudor Ambarus
2018-10-16 16:34 ` Cyrille Pitchen
2018-10-17 2:07 ` Yogesh Narayan Gaur
2018-10-17 3:50 ` Yogesh Narayan Gaur
2018-10-17 7:07 ` Boris Brezillon
2018-10-17 7:10 ` Boris Brezillon
2018-10-17 7:17 ` Boris Brezillon [this message]
2018-10-17 7:29 ` Boris Brezillon
2018-10-17 7:46 ` Yogesh Narayan Gaur
2018-10-17 8:00 ` Tudor Ambarus
2018-10-17 8:20 ` Yogesh Narayan Gaur
2018-10-17 8:48 ` Boris Brezillon
2018-10-17 9:52 ` Boris Brezillon
2018-10-22 6:04 ` Yogesh Narayan Gaur
2018-10-22 7:34 ` Boris Brezillon
2018-10-22 8:01 ` Boris Brezillon
2018-10-22 8:32 ` Yogesh Narayan Gaur
2018-10-22 9:09 ` Boris Brezillon
2018-10-22 8:33 ` Tudor Ambarus
2018-10-22 9:15 ` Boris Brezillon
2018-10-22 10:03 ` Yogesh Narayan Gaur
2018-10-22 10:10 ` Boris Brezillon
2018-10-22 10:17 ` Yogesh Narayan Gaur
2018-10-22 10:25 ` Boris Brezillon
2018-10-22 10:20 ` Boris Brezillon
2018-10-22 10:26 ` Boris Brezillon
2018-10-22 10:39 ` Yogesh Narayan Gaur
2018-10-22 10:46 ` Boris Brezillon
2018-10-22 10:52 ` Boris Brezillon
2018-10-22 11:03 ` Yogesh Narayan Gaur
2018-10-22 11:43 ` Boris Brezillon
2018-10-22 11:46 ` Yogesh Narayan Gaur
2018-10-22 11:52 ` Boris Brezillon
2018-10-23 4:47 ` Yogesh Narayan Gaur
2018-10-23 5:39 ` Boris Brezillon
2018-10-23 8:18 ` Yogesh Narayan Gaur
2018-10-23 8:48 ` Boris Brezillon
2018-10-23 8:59 ` Yogesh Narayan Gaur
2018-10-23 9:09 ` Boris Brezillon
2018-10-23 9:01 ` Boris Brezillon
2018-10-23 9:05 ` Yogesh Narayan Gaur
2018-10-23 9:10 ` Boris Brezillon
2018-10-23 9:15 ` Yogesh Narayan Gaur
2018-10-17 9:06 ` Cyrille Pitchen
2018-09-11 15:40 ` [PATCH v3 2/2] mtd: spi-nor: parse SFDP Sector Map Parameter Table Tudor Ambarus
2018-09-11 18:56 ` Marek Vasut
2018-09-18 13:09 ` [PATCH v3 0/2] add support to non-uniform SFDP SPI NOR flash memories Boris Brezillon
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