From: Schrempf Frieder <frieder.schrempf@kontron.De>
To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Mark Brown <broonie@kernel.org>, Han Xu <han.xu@nxp.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"richard@nod.at" <richard@nod.at>,
"miquel.raynal@bootlin.com" <miquel.raynal@bootlin.com>,
David Wolfe <david.wolfe@nxp.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 3/9] spi: Add a driver for the Freescale/NXP QuadSPI controller
Date: Thu, 15 Nov 2018 14:01:42 +0000 [thread overview]
Message-ID: <11f45245-efc4-f1cf-3ead-578a5ca4bf29@kontron.de> (raw)
In-Reply-To: <20181115141252.52a5b32d@bbrezillon>
Hi Yogesh,
On 15.11.18 14:12, Boris Brezillon wrote:
> On Thu, 15 Nov 2018 11:43:05 +0000
> Schrempf Frieder <frieder.schrempf@kontron.De> wrote:
>
>> On 15.11.18 07:22, Yogesh Narayan Gaur wrote:
>>> Hi Frieder,
>>>
>>> With below patch on top of your v5, Read/Write/Erase on CS1 is working fine for me.
>>
>> Ok, are you sure, that AHB read is working too with this patch?
>> You are removing the memmap_phy offset from SFAR and the SFXXAD register
>> values.
>>
>> I can understand that selection of the CS and IP commands will work like
>> this, but I can't understand how AHB read should work without the base
>> address of the mapped memory.
>>
>> I'm afraid I still don't fully understand the background of these
>> things,
>
> Same here. Yogesh, can you give us more detail on why you decided to
> drop the memmap_phy offset?
Your changes do not work on my setup (i.MX6UL). It looks like your
hardware is different.
I found this patch for LS2080A: [1]. This would explain why you need to
remove the offset to make it work.
To verify this, could you please test your setup with the current
spi-nor driver (fsl_quadspi.c). If our assumptions are right, it should
only work on CS0 and CS1 with [1] applied.
Thanks,
Frieder
[1]: http://patchwork.ozlabs.org/patch/660364/
next prev parent reply other threads:[~2018-11-15 14:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-13 13:47 [PATCH v5 0/9] Port the FSL QSPI driver to the SPI framework Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 1/9] ARM: dts: Reflect change of FSL QSPI driver and remove unused properties Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 2/9] arm64: " Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 3/9] spi: Add a driver for the Freescale/NXP QuadSPI controller Schrempf Frieder
2018-11-14 8:39 ` Yogesh Narayan Gaur
2018-11-14 8:50 ` Schrempf Frieder
2018-11-14 9:03 ` Schrempf Frieder
2018-11-14 10:43 ` Yogesh Narayan Gaur
2018-11-14 10:46 ` Boris Brezillon
2018-11-14 11:07 ` Schrempf Frieder
2018-11-15 6:22 ` Yogesh Narayan Gaur
2018-11-15 11:43 ` Schrempf Frieder
2018-11-15 13:12 ` Boris Brezillon
2018-11-15 14:01 ` Schrempf Frieder [this message]
2018-11-16 5:41 ` Yogesh Narayan Gaur
2018-11-16 9:42 ` Schrempf Frieder
2018-11-16 9:46 ` Yogesh Narayan Gaur
2018-11-16 10:10 ` Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 4/9] dt-bindings: spi: Move the bindings for the FSL QSPI driver Schrempf Frieder
2018-11-16 22:59 ` Rob Herring
2018-11-13 13:47 ` [PATCH v5 5/9] dt-bindings: spi: Adjust " Schrempf Frieder
2018-11-16 22:59 ` Rob Herring
2018-11-13 13:47 ` [PATCH v5 6/9] mtd: fsl-quadspi: Remove the driver as it was replaced by spi-fsl-qspi.c Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 7/9] ARM: dts: ls1021a: Remove fsl,qspi-has-second-chip as it is not used Schrempf Frieder
2018-11-13 13:47 ` [PATCH v5 8/9] ARM64: dts: ls1046a: " Schrempf Frieder
2018-11-13 13:48 ` [PATCH v5 9/9] MAINTAINERS: Move the Freescale QSPI driver to the SPI framework Schrempf Frieder
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