linux-kernel - Re: [PATCH 1/1] mtd: spi-nor: winbond: Add support for w25q01jv-iq

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Date:   Wed, 29 Dec 2021 14:01:03 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <p.yadav@...com>, <potin.lai@...ntatw.com>
CC:     <michael@...le.cc>, <miquel.raynal@...tlin.com>, <richard@....at>,
        <vigneshr@...com>, <patrick@...cx.xyz>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] mtd: spi-nor: winbond: Add support for w25q01jv-iq

On 12/27/21 11:01 AM, Pratyush Yadav wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On 24/12/21 06:45PM, Potin Lai wrote:
>> Add support for winbond w25q01jv-iq chip
>>
>> Signed-off-by: Potin Lai <potin.lai@...ntatw.com>
>> ---
>>  drivers/mtd/spi-nor/winbond.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
>> index c783ab4ba1e4..a2a72d05fc28 100644
>> --- a/drivers/mtd/spi-nor/winbond.c
>> +++ b/drivers/mtd/spi-nor/winbond.c
>> @@ -104,6 +104,8 @@ static const struct flash_info winbond_parts[] = {
>>                           SECT_4K | SPI_NOR_QUAD_READ | SPI_NOR_DUAL_READ) },
>>       { "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024,
>>                            SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
>> +     { "w25q01jv-iq", INFO(0xef4021, 0, 64 * 1024, 2048,
>> +                             SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
> 
> We recently reworked how flags are set. Please use the new flags
> variants. See [0] If the flash supports SFDP then we prefer you only set
> the PARSE_SFDP flag. See [1].
> 
> You also need to show the dumps of the SFDP and other flash parameters.
> See [2].
> 
> [0] https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git/commit/?h=spi-nor/next&id=ec1c0e996035c8f93eca7bb64ccf0411b57fddea
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git/commit/?h=spi-nor/next&id=1c513c986b0a4c7151cb4571e568136f16c9dc58
> [2] https://patchwork.ozlabs.org/project/linux-mtd/patch/20211209190436.401946-2-tudor.ambarus@microchip.com/

Thanks for the guidance, Pratyush, your hints are correct.
I'm in the process of updating the documentation where I'm adding some
guidelines on how to submit a new flash proposal or how to update an
existing flash_info entry. We'll be able to guide contributors to the SPI NOR
documentation soon.

Cheers,
ta