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Message-ID: <c7c3c4cf5dd477953e366053859df08f@walle.cc> Date: Mon, 30 Jan 2023 10:29:44 +0100 From: Michael Walle <michael@...le.cc> To: Heyi Guo <guoheyi@...ux.alibaba.com> Cc: linux-kernel@...r.kernel.org, Tudor Ambarus <tudor.ambarus@...rochip.com>, Pratyush Yadav <pratyush@...nel.org>, Miquel Raynal <miquel.raynal@...tlin.com>, Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, linux-mtd@...ts.infradead.org Subject: Re: [PATCH] drivers/spi-nor: add support for Winbond w25q01jv Hi, > Winbond W25Q01JV is a 128MB SPI-NOR flash chip. > > Signed-off-by: Heyi Guo <guoheyi@...ux.alibaba.com> > > -- > Cc: Tudor Ambarus <tudor.ambarus@...rochip.com> > Cc: Pratyush Yadav <pratyush@...nel.org> > Cc: Michael Walle <michael@...le.cc> > Cc: Miquel Raynal <miquel.raynal@...tlin.com> > Cc: Richard Weinberger <richard@....at> > Cc: Vignesh Raghavendra <vigneshr@...com> > Cc: linux-mtd@...ts.infradead.org > --- > drivers/mtd/spi-nor/winbond.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/mtd/spi-nor/winbond.c > b/drivers/mtd/spi-nor/winbond.c > index ca39acf4112c8..0cd49f534bf8d 100644 > --- a/drivers/mtd/spi-nor/winbond.c > +++ b/drivers/mtd/spi-nor/winbond.c > @@ -142,6 +142,9 @@ static const struct flash_info winbond_nor_parts[] > = { > { "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024) > NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | > SPI_NOR_QUAD_READ) }, > + { "w25q01jv", INFO(0xef4021, 0, 64 * 1024, 2048) > + NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | > + SPI_NOR_QUAD_READ) }, I'd guess this flash has SFDP support, correct? In this case, could you please try the latest next (or -rc) kernel without this change? In the meantime we have a generic spi-nor driver [1] so you don't need a new entry in most cases. Apart from that, it would be nice if you could dump the SFDP tables, see [2]. -michael [1] https://elixir.bootlin.com/linux/v6.2-rc5/source/drivers/mtd/spi-nor/core.c#L1638 [2] https://lore.kernel.org/r/4304e19f3399a0a6e856119d01ccabe0@walle.cc/
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