From: Mark Brown <broonie@kernel.org>
To: Ranjit Abhimanyu Waghmode <ranjit.waghmode@xilinx.com>
Cc: Michal Simek <michals@xilinx.com>,
Soren Brinkmann <sorenb@xilinx.com>,
"dwmw2@infradead.org" <dwmw2@infradead.org>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"zajec5@gmail.com" <zajec5@gmail.com>,
"marex@denx.de" <marex@denx.de>,
"shijie.huang@intel.com" <shijie.huang@intel.com>,
"juhosg@openwrt.org" <juhosg@openwrt.org>,
"ben@decadent.org.uk" <ben@decadent.org.uk>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Harini Katakam <harinik@xilinx.com>,
Punnaiah Choudary Kalluri <punnaia@xilinx.com>,
"ran27jit@gmail.com" <ran27jit@gmail.com>
Subject: Re: [RFC PATCH 0/2] spi: add dual parallel & stacked mode support in Zynq MPSoC GQSPI controller
Date: Thu, 16 Jul 2015 09:57:39 +0100 [thread overview]
Message-ID: <20150716085739.GT11162@sirena.org.uk> (raw)
In-Reply-To: <7CFCFE83B8145347A1D424EC939F1C3CA7E758@XAP-PVEXMBX01.xlnx.xilinx.com>
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On Thu, Jul 16, 2015 at 07:27:34AM +0000, Ranjit Abhimanyu Waghmode wrote:
> For an example take two flashes connected in stacked mode.
> For user it doesn't matter whether how many flashes are really connected.
> There will be situation like, single partition is spread across two flashes (partition staring at the end of one flash and continued to the second flash). But it has to be shown contiguous to user.
> In this scenario, I am not clear how MTD layer will handle the case.
> It would be great if you could just put some light on it.
That's something for the MTD layer or possibly even a layer above it to
worry about - this situation is the same as we have with disks where we
have md which combines other devices, if something similar is needed for
flash we should use a similar pattern.
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From: broonie@kernel.org (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 0/2] spi: add dual parallel & stacked mode support in Zynq MPSoC GQSPI controller
Date: Thu, 16 Jul 2015 09:57:39 +0100 [thread overview]
Message-ID: <20150716085739.GT11162@sirena.org.uk> (raw)
In-Reply-To: <7CFCFE83B8145347A1D424EC939F1C3CA7E758@XAP-PVEXMBX01.xlnx.xilinx.com>
On Thu, Jul 16, 2015 at 07:27:34AM +0000, Ranjit Abhimanyu Waghmode wrote:
> For an example take two flashes connected in stacked mode.
> For user it doesn't matter whether how many flashes are really connected.
> There will be situation like, single partition is spread across two flashes (partition staring at the end of one flash and continued to the second flash). But it has to be shown contiguous to user.
> In this scenario, I am not clear how MTD layer will handle the case.
> It would be great if you could just put some light on it.
That's something for the MTD layer or possibly even a layer above it to
worry about - this situation is the same as we have with disks where we
have md which combines other devices, if something similar is needed for
flash we should use a similar pattern.
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next prev parent reply other threads:[~2015-07-16 8:58 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 12:44 [RFC PATCH 0/2] spi: add dual parallel & stacked mode support in Zynq MPSoC GQSPI controller Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-09 12:44 ` [RFC PATCH 1/2] spi: zynqmp: gqspi: add support for dual parallel mode configuration Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-14 16:26 ` Mark Brown
2015-07-14 16:26 ` Mark Brown
2015-07-14 16:26 ` Mark Brown
2015-07-09 12:44 ` [RFC PATCH 2/2] spi: zynqmp: gqspi: add support for stacked " Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-09 12:44 ` Ranjit Waghmode
2015-07-14 16:28 ` Mark Brown
2015-07-14 16:28 ` Mark Brown
2015-07-14 16:28 ` Mark Brown
2015-07-10 8:28 ` [RFC PATCH 0/2] spi: add dual parallel & stacked mode support in Zynq MPSoC GQSPI controller Mike Looijmans
2015-07-10 8:28 ` Mike Looijmans
2015-07-13 14:59 ` Mark Brown
2015-07-13 14:59 ` Mark Brown
2015-07-13 14:59 ` Mark Brown
2015-07-13 10:04 ` Thomas.Betker
2015-07-13 10:04 ` Thomas.Betker
2015-07-13 10:04 ` Thomas.Betker at rohde-schwarz.com
2015-07-14 4:24 ` Harini Katakam
2015-07-14 4:24 ` Harini Katakam
2015-07-14 4:24 ` Harini Katakam
2015-07-14 16:40 ` Mark Brown
2015-07-14 16:40 ` Mark Brown
2015-07-14 16:40 ` Mark Brown
2015-07-15 14:12 ` Ranjit Abhimanyu Waghmode
2015-07-15 14:12 ` Ranjit Abhimanyu Waghmode
2015-07-15 14:12 ` Ranjit Abhimanyu Waghmode
2015-07-15 16:01 ` Mark Brown
2015-07-15 16:01 ` Mark Brown
2015-07-15 16:01 ` Mark Brown
2015-07-16 7:27 ` Ranjit Abhimanyu Waghmode
2015-07-16 7:27 ` Ranjit Abhimanyu Waghmode
2015-07-16 7:27 ` Ranjit Abhimanyu Waghmode
2015-07-16 8:57 ` Mark Brown [this message]
2015-07-16 8:57 ` Mark Brown
2015-07-17 12:03 ` Ranjit Abhimanyu Waghmode
2015-07-17 12:03 ` Ranjit Abhimanyu Waghmode
2015-07-17 12:03 ` Ranjit Abhimanyu Waghmode
2015-07-24 10:42 ` Ranjit Abhimanyu Waghmode
2015-07-24 10:42 ` Ranjit Abhimanyu Waghmode
2015-07-24 10:52 ` Mark Brown
2015-07-24 10:52 ` Mark Brown
2015-07-27 13:55 ` Ranjit Abhimanyu Waghmode
2015-07-27 13:55 ` Ranjit Abhimanyu Waghmode
2015-07-27 13:55 ` Ranjit Abhimanyu Waghmode
2015-07-27 14:23 ` Mark Brown
2015-07-27 14:23 ` Mark Brown
2015-07-27 14:23 ` Mark Brown
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