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Date:   Mon, 17 Feb 2020 18:09:08 +0800
From:   "Ramuthevar, Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
To:     Mark Brown <broonie@...nel.org>,
        Simon Goldschmidt <simon.k.r.goldschmidt@...il.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-spi@...r.kernel.org, Vignesh R <vigneshr@...com>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, dan.carpenter@...cle.com,
        cheol.yong.kim@...el.com, qi-ming.wu@...el.com
Subject: Re: [PATCH v9 0/2] spi: cadence-quadpsi: Add support for the Cadence
 QSPI controller

Hi Mark,

On 14/2/2020 8:11 PM, Mark Brown wrote:
> On Fri, Feb 14, 2020 at 01:02:22PM +0100, Simon Goldschmidt wrote:
>> On Fri, Feb 14, 2020 at 12:46 PM Ramuthevar,Vadivel MuruganX
>> <vadivel.muruganx.ramuthevar@...ux.intel.com> wrote:
>>> Add support for the Cadence QSPI controller. This controller is
>>> present in the Intel Lightning Mountain(LGM) SoCs, Altera and TI SoCs.
>>> This driver has been tested on the Intel LGM SoCs.
>> This is v9 and still, none of the altera maintainers are on CC?
>> How will it be ensured that this doesn't break altera if it is merged?
> Given that this is a new driver I'd be very surprised if it broke other
> users?  I can imagine it might not work for them and it would definitely
> be much better to get their review but it shouldn't be any worse than
> the current lack of support.
Thanks for the clarification, Please kindly see the below discussion b/w
Vignesh and Dinh in the earlier mail chain.

[Vignesh]  The legacy driver under drivers/mtd/spi-nor will be removed 
as we cannot
support both SPI NOR and SPI NAND with single driver if its under
spi-nor. New driver should be functionally equivalent to existing one.
So I suggest you test this driver on legcay SoCFPGA products.

[Dinh]   I don't have the original patch series, but will monitor going 
forward.
As long as the new driver does not break legacy SoCFPGA products that
use the cadence-quadspi driver then it should be ok.

Regards
vadivel

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