From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut To: Sourav Poddar Subject: Re: [PATCH 0/4] mtd: spi-nor: add a new framework for SPI NOR Date: Wed, 27 Nov 2013 11:06:09 +0100 References: <1385447575-23773-1-git-send-email-b32955@freescale.com> <201311271027.06982.marex@denx.de> <5295BFB3.5020109@ti.com> In-Reply-To: <5295BFB3.5020109@ti.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201311271106.09624.marex@denx.de> Cc: broonie@linaro.org, Huang Shijie , linux-mtd@lists.infradead.org, pekon@ti.com, computersforpeace@gmail.com, dwmw2@infradead.org, linux-arm-kernel@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Dear Sourav Poddar, > Dear Marek Vasut, Huang, > > On Wednesday 27 November 2013 02:57 PM, Marek Vasut wrote: > > Dear Huang Shijie, > > > >> 1.) Why add a new framework for SPI NOR? > >> > >> The SPI-NOR controller such as Freescale's Quadspi controller is > >> working in a different way from the SPI bus. It should knows the NOR > >> commands to find the right LUT sequence. Unfortunately, the current > >> code can not meet this requirement. > > > > Is there any kind of documentation for this controller available? I > > cannot quite understand how this controller works and why can it not be > > used with our current infrastructure. > > I do have a similar requirement where my controller need to be configured > from slave info. I have submiited a series in the mtd list adding that > portion > of handling such cases. Here, is the patch which specific to m25p80 part. > http://patchwork.ozlabs.org/patch/294285/ > > The whole series can be found here: > https://www.mail-archive.com/linux-omap@vger.kernel.org/msg98691.html Is this TI QSPI the same thing as the Altera QSPI controller please ? Otherwise, I seriously believe you and Huang should work on a common infrastructure. I would first like to understand how is the controller in DRA7xx different from regular SPI controller though. Is there any kind of documentation I could study please? Best regards, Marek Vasut From mboxrd@z Thu Jan 1 00:00:00 1970 From: marex@denx.de (Marek Vasut) Date: Wed, 27 Nov 2013 11:06:09 +0100 Subject: [PATCH 0/4] mtd: spi-nor: add a new framework for SPI NOR In-Reply-To: <5295BFB3.5020109@ti.com> References: <1385447575-23773-1-git-send-email-b32955@freescale.com> <201311271027.06982.marex@denx.de> <5295BFB3.5020109@ti.com> Message-ID: <201311271106.09624.marex@denx.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Dear Sourav Poddar, > Dear Marek Vasut, Huang, > > On Wednesday 27 November 2013 02:57 PM, Marek Vasut wrote: > > Dear Huang Shijie, > > > >> 1.) Why add a new framework for SPI NOR? > >> > >> The SPI-NOR controller such as Freescale's Quadspi controller is > >> working in a different way from the SPI bus. It should knows the NOR > >> commands to find the right LUT sequence. Unfortunately, the current > >> code can not meet this requirement. > > > > Is there any kind of documentation for this controller available? I > > cannot quite understand how this controller works and why can it not be > > used with our current infrastructure. > > I do have a similar requirement where my controller need to be configured > from slave info. I have submiited a series in the mtd list adding that > portion > of handling such cases. Here, is the patch which specific to m25p80 part. > http://patchwork.ozlabs.org/patch/294285/ > > The whole series can be found here: > https://www.mail-archive.com/linux-omap at vger.kernel.org/msg98691.html Is this TI QSPI the same thing as the Altera QSPI controller please ? Otherwise, I seriously believe you and Huang should work on a common infrastructure. I would first like to understand how is the controller in DRA7xx different from regular SPI controller though. Is there any kind of documentation I could study please? Best regards, Marek Vasut