From: Schrempf Frieder <frieder.schrempf@kontron.De>
To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>,
"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>
Cc: "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: Wed, 14 Nov 2018 09:03:09 +0000 [thread overview]
Message-ID: <65577d13-b17d-8f69-313c-01d23240d1d9@kontron.de> (raw)
In-Reply-To: <ce9cbfc0-3257-f117-aa21-cdee068579ce@kontron.de>
Hi Yogesh,
On 14.11.18 09:50, Frieder Schrempf wrote:
> Hi Yogesh,
>
> On 14.11.18 09:39, Yogesh Narayan Gaur wrote:
>> Hi Frieder,
>>
>> I have tried v5 version of the patch and have observed that Read is
>> failing for CS1.
>
> Thanks a lot for doing the test. I really appreciate it.
>
>> In my target 2 flash devices are connected on same bus i.e. A1 -> CS0
>> and A2 -> CS1.
>>
>> On initial debugging, I figured that Read is failing for the AHB mode
>> i.e. if I attempt to read data size less than rxfifo read is working
>> fine without any issue.
>>
>> For data size more than rxfifo Read out data is content of same
>> requested address of CS0.
>> mtd_debug read /dev/mtd1 0xf00000 0x70 read --> Data is correct
>> mtd_debug read /dev/mtd1 0xf00000 0x100 read --> Data is
>> in-correct and data content are of the address 0xf00000 of CS0
>> connected flash device.
>
> Ok, I will have a look at what could make the chip selection fail in
> case of AHB read.
Could you try with this change applied:
@@ -503,7 +503,7 @@ static void fsl_qspi_select_mem(struct fsl_qspi *q,
struct spi_device *spi)
map_addr = q->memmap_phy;
else
map_addr = q->memmap_phy +
- 2 * q->devtype_data->ahb_buf_size;
+ q->devtype_data->ahb_buf_size;
qspi_writel(q, map_addr, q->iobase + QUADSPI_SFA1AD +
(i * 4));
}
>
>> On the setup where you have done testing, did AHB mode read is being
>> verified for CS1?
>
> No, I currently have only hardware with CS0 connected. So I didn't test
> with CS1.
>
>>
>> I am doing further debugging of this issue.
>
> Thanks,
> Frieder
next prev parent reply other threads:[~2018-11-14 9:03 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 [this message]
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
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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