linux-kernel - RE: [PATCH v2 1/2] dt-bindings: mtd: spi-nor: Add reset-gpios property

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Message-ID: <BY5PR12MB4258128603AA297DD8FAB168DB7B9@BY5PR12MB4258.namprd12.prod.outlook.com>
Date:   Thu, 1 Sep 2022 10:18:21 +0000
From:   "Potthuri, Sai Krishna" <sai.krishna.potthuri@....com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <pratyush@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "saikrishna12468@...il.com" <saikrishna12468@...il.com>,
        "git (AMD-Xilinx)" <git@....com>
Subject: RE: [PATCH v2 1/2] dt-bindings: mtd: spi-nor: Add reset-gpios
 property

Hi Krzysztof,

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Sent: Thursday, September 1, 2022 1:26 PM
> To: Potthuri, Sai Krishna <sai.krishna.potthuri@....com>; Tudor Ambarus
> <tudor.ambarus@...rochip.com>; Pratyush Yadav <pratyush@...nel.org>;
> Michael Walle <michael@...le.cc>; Miquel Raynal
> <miquel.raynal@...tlin.com>; Richard Weinberger <richard@....at>;
> Vignesh Raghavendra <vigneshr@...com>; Rob Herring
> <robh+dt@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>
> Cc: devicetree@...r.kernel.org; linux-mtd@...ts.infradead.org; linux-
> kernel@...r.kernel.org; saikrishna12468@...il.com; git (AMD-Xilinx)
> <git@....com>
> Subject: Re: [PATCH v2 1/2] dt-bindings: mtd: spi-nor: Add reset-gpios
> property
> 
> On 01/09/2022 10:29, Sai Krishna Potthuri wrote:
> > SPI-NOR flashes have RESET pin which can be toggled using GPIO
> > controller, for those platforms reset-gpios property can be used to
> > reset the flash device.
> >
> > Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@....com>
> > ---
> 
> You still miss the user (DTS) of this change...
Do you mean to have this property in example DTS in this yaml?

> The JEDEC spec did not mention
> a reset pin. Can you provide the user?
Xilinx Octal SPI (cdns,qspi-nor.yaml) is using this reset pin to reset the
flash device on Versal platform.
Do you want me to update the example dts in cdns,qspi-nor.yaml file
to reflect this property in this patch?

Regards
Sai Krishna