On Tue, 16 Oct 2018 09:51:47 +0000
Yogesh Narayan Gaur <yogeshnarayan.gaur@xxxxxxx> wrote:
> Hi Tudor,
>
> This patch is breaking the 1-4-4 Read protocol for the spansion flash "s25fl512s".
>
> Without this patch read request command for Quad mode, 4-byte enable, is coming as 0xEC i.e. SPINOR_OP_READ_1_4_4_4B.
> But after applying this patch, read request command for Quad mode is coming as 0x6C i.e. SPINOR_OP_READ_1_1_4_4B.
>
> This flash also supports non-uniform erase.
> Can you please check and provide some suggestion?
Are you sure the regression comes from this patch? I suspect your bug
comes from 41fe242979e4 ("mtd: spi-nor: fsl-quadspi: fix read error for
flash size larger than 16MB").
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Re: [PATCH v3 1/2] mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories
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- Subject: Re: [PATCH v3 1/2] mtd: spi-nor: add support to non-uniform SFDP SPI NOR flash memories
- From: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>
- Date: Tue, 16 Oct 2018 14:04:11 +0200
- Cc: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>, "richard@xxxxxx" <richard@xxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "nicolas.ferre@xxxxxxxxxxxxx" <nicolas.ferre@xxxxxxxxxxxxx>, "marek.vasut@xxxxxxxxx" <marek.vasut@xxxxxxxxx>, "cyrille.pitchen@xxxxxxxxxxxxx" <cyrille.pitchen@xxxxxxxxxxxxx>, "linux-mtd@xxxxxxxxxxxxxxxxxxx" <linux-mtd@xxxxxxxxxxxxxxxxxxx>, "Cristian.Birsan@xxxxxxxxxxxxx" <Cristian.Birsan@xxxxxxxxxxxxx>, "computersforpeace@xxxxxxxxx" <computersforpeace@xxxxxxxxx>, "dwmw2@xxxxxxxxxxxxx" <dwmw2@xxxxxxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>
- In-reply-to: <VI1PR04MB103888BC18F3C5AD0C02DEF699FE0@VI1PR04MB1038.eurprd04.prod.outlook.com>
- References: <20180911154007.17195-1-tudor.ambarus@microchip.com> <20180911154007.17195-2-tudor.ambarus@microchip.com> <VI1PR04MB103888BC18F3C5AD0C02DEF699FE0@VI1PR04MB1038.eurprd04.prod.outlook.com>
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