linux-kernel - Re: [PATCH v3 1/1] mtd: spi-nor: winbond: Add support for w25q01jv-iq

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Date:   Tue, 22 Feb 2022 09:56:32 +0100
From:   Michael Walle <michael@...le.cc>
To:     Potin Lai <potin.lai@...ntatw.com>
Cc:     Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <p.yadav@...com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Patrick Williams <patrick@...cx.xyz>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/1] mtd: spi-nor: winbond: Add support for w25q01jv-iq

Am 2022-02-22 09:51, schrieb Potin Lai:
> Add support for winbond w25q01jv-iq chip
> 
> Signed-off-by: Potin Lai <potin.lai@...ntatw.com>
> 
> ---
> 
> v2: 
> https://lore.kernel.org/all/20220222064227.16724-1-potin.lai@quantatw.com/
> v1: 
> https://lore.kernel.org/all/20211224104522.24615-1-potin.lai@quantatw.com/
> 
> Changes v2 --> v3:
> - move spi-nor flash information to comment area
> root@...tchley:~# cat
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/jedec_id
> ef4021
> root@...tchley:~# cat
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/manufacturer
> winbond
> root@...tchley:~# cat
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/partname
> w25q01jv-iq
> root@...tchley:~# md5sum
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp
> a7b9dbf76e99a33db99e557b6676588a
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp
> root@...tchley:~# hexdump -C
> /sys/devices/platform/ahb/1e620000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp
> 00000000 53 46 44 50 06 01 01 ff 00 06 01 10 80 00 00 ff 
> |SFDP............|
> 00000010 84 00 01 02 d0 00 00 ff 03 00 01 02 f0 00 00 ff 
> |................|
> 00000020 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
> |................|
> *
> 00000080 e5 20 fb ff ff ff ff 3f 44 eb 08 6b 08 3b 42 bb |. 
> .....?D..k.;B.|
> 00000090 fe ff ff ff ff ff 00 00 ff ff 40 eb 0c 20 0f 52 |..........@.. 
> .R|
> 000000a0 10 d8 00 00 36 02 a6 00 82 ea 14 e2 e9 63 76 33 
> |....6........cv3|
> 000000b0 7a 75 7a 75 f7 a2 d5 5c 19 f7 4d ff e9 70 f9 a5 
> |zuzu...\..M..p..|
> 000000c0 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 
> |................|
> 000000d0 ff 0a f0 ff 21 ff dc ff |....!...|
> 000000d8
> 
> Changes v1 --> v2:
> - rework patch to work with new flags
> 
> ---
>  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 59d53b4c39c8..4c088250fe96 100644
> --- a/drivers/mtd/spi-nor/winbond.c
> +++ b/drivers/mtd/spi-nor/winbond.c
> @@ -131,6 +131,8 @@ static const struct flash_info winbond_parts[] = {
>  	{ "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024)
>  		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
>  			      SPI_NOR_QUAD_READ) },
> +	{ "w25q01jv-iq", INFO(0xef4021, 0, 64 * 1024, 2048)
> +		PARSE_SFDP },

You've seemed to miss my comment in v2 here. name should be w25q01jvq.

With that you can already add:
Reviewed-by: Michael Walle <michael@...le.cc>

-michael