linux-kernel - Re: [PATCH v2 3/4] mtd: spi-nor: Favor the BFPT-parsed set_4byte_addr

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Message-ID: <20220401195519.chzdrnb6vdf6jlos@ti.com>
Date:   Sat, 2 Apr 2022 01:25:19 +0530
From:   Pratyush Yadav <p.yadav@...com>
To:     Tudor Ambarus <tudor.ambarus@...rochip.com>
CC:     <michael@...le.cc>, <miquel.raynal@...tlin.com>, <richard@....at>,
        <vigneshr@...com>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <nicolas.ferre@...rochip.com>
Subject: Re: [PATCH v2 3/4] mtd: spi-nor: Favor the BFPT-parsed
 set_4byte_addr_mode method

On 09/03/22 04:42PM, Tudor Ambarus wrote:
> JESD216 SFDP defines in the BFPT standard methods to enter and exit the
> 4-Byte Address Mode. The flash parameters and settings that are retrieved
> from SFDP have higher precedence than the static initialized ones, because
> they should be more accurate and less error prone than those initialized
> statically. Favor the BFPT-parsed set_4byte_addr_mode method and use the
> generic core methods where possible.
> This patch may introduce regressions in case BFPT contains wrong data. The
> fix is to introduce a post_bfpt() fixup hook and update the wrong BFPT
> data.
> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus@...rochip.com>

Reviewed-by: Pratyush Yadav <p.yadav@...com>

-- 
Regards,
Pratyush Yadav
Texas Instruments Inc.