Messages in this thread | ![/](/images/icornerl.gif) | | Date | Fri, 05 Apr 2024 16:41:29 +0200 | From | "Michael Walle" <> | Subject | Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry |
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Hi Flavio,
On Fri Apr 5, 2024 at 12:01 PM CEST, Flavio Suligoi wrote: > Add the Everspin EM0004LXB 4Mb (512KB) Industrial STT-MRAM Persistent > Memory. > This device is JEDEC compatible (JESD251 and JESD251-1), but it is not > able to provide SFDP information.
Did you try the at25 driver if it will fit your usecase? Judging from your last response, it sounds like it will do.
> > Link: https://www.everspin.com/file/158244/download > > Signed-off-by: Flavio Suligoi <f.suligoi@asem.it> > --- > drivers/mtd/spi-nor/everspin.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/mtd/spi-nor/everspin.c b/drivers/mtd/spi-nor/everspin.c > index 5f321e24ae7d..4741930ce9a8 100644 > --- a/drivers/mtd/spi-nor/everspin.c > +++ b/drivers/mtd/spi-nor/everspin.c > @@ -31,6 +31,14 @@ static const struct flash_info everspin_nor_parts[] = { > .size = SZ_512K, > .sector_size = SZ_512K, > .flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR, > + }, { > + .id = SNOR_ID(0x6b, 0xbb, 0x13), > + .name = "em004lxb", > + .size = SZ_512K, > + .sector_size = SZ_512K, > + .flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR | SPI_NOR_HAS_LOCK |
Will it also work without SPI_NOR_NO_ERASE? Also, the flash supports fast read, so drop NO_FR. Also, please have a look at [1] for the testing requirements.
Thanks. -michael
> + SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6, > + .no_sfdp_flags = SPI_NOR_SKIP_SFDP, > } > }; >
[1] https://docs.kernel.org/driver-api/mtd/spi-nor.html [unhandled content-type:application/pgp-signature] | ![\](/images/icornerr.gif) |