linux-kernel - Re: [PATCH] mtd: spi-nor: parse SFDP 4-byte Address Instruction Table

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Message-ID: <20181128085745.1ef607b3@bbrezillon>
Date:   Wed, 28 Nov 2018 08:57:45 +0100
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     <Tudor.Ambarus@...rochip.com>
Cc:     <marek.vasut@...il.com>, <dwmw2@...radead.org>,
        <computersforpeace@...il.com>, <richard@....at>,
        <Cyrille.Pitchen@...rochip.com>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: spi-nor: parse SFDP 4-byte Address Instruction
 Table

On Tue, 20 Nov 2018 11:55:21 +0000
<Tudor.Ambarus@...rochip.com> wrote:

> +
> +	/*
> +	 * We set nor->addr_width here to skip spi_nor_set_4byte_opcodes()
> +	 * later because this latest function implements a legacy quirk for
> +	 * the erase size of Spansion memory. However this quirk is no longer
> +	 * needed with new SFDP compliant memories.
> +	 */
> +	nor->addr_width = 4;
> +	nor->flags |= SPI_NOR_4B_OPCODES;

You mean SNOR_F_4B_OPCODES (the one introduced here [1]), because
SPI_NOR_4B_OPCODES should only be used for flash_info->flags and might
soon conflict with another SNOR_F_ flag?

[1]http://patchwork.ozlabs.org/patch/991476/