* [PATCH 0/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-02-01 13:17 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 13:17 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
Link: https://www.everspin.com/file/158244/download
I currently use this MRAM on one of our i.MX8MP boards.
Flavio Suligoi (1):
mtd: spi-nor: everspin: add em004lxb entry
drivers/mtd/spi-nor/everspin.c | 8 ++++++++
1 file changed, 8 insertions(+)
--
2.34.1
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 0/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-02-01 13:17 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 13:17 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
Link: https://www.everspin.com/file/158244/download
I currently use this MRAM on one of our i.MX8MP boards.
Flavio Suligoi (1):
mtd: spi-nor: everspin: add em004lxb entry
drivers/mtd/spi-nor/everspin.c | 8 ++++++++
1 file changed, 8 insertions(+)
--
2.34.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-02-01 13:17 ` Flavio Suligoi
@ 2024-02-01 13:17 ` Flavio Suligoi
-1 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 13:17 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
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 |
+ SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6,
+ .no_sfdp_flags = SPI_NOR_SKIP_SFDP,
}
};
--
2.34.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-02-01 13:17 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 13:17 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
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 |
+ SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6,
+ .no_sfdp_flags = SPI_NOR_SKIP_SFDP,
}
};
--
2.34.1
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply related [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-02-01 13:17 ` Flavio Suligoi
@ 2024-02-01 13:47 ` Michael Walle
-1 siblings, 0 replies; 14+ messages in thread
From: Michael Walle @ 2024-02-01 13:47 UTC (permalink / raw)
To: Flavio Suligoi
Cc: Tudor Ambarus, Pratyush Yadav, Miquel Raynal, Richard Weinberger,
Vignesh Raghavendra, linux-mtd, linux-kernel
Hi,
> Add the Everspin EM0004LXB 4Mb (512KB) Industrial STT-MRAM Persistent
> Memory.
Out of curiosity, what is your use case here? Usually, I push back on
this small MRAM devices in SPI-NOR in favor of the at25 driver. But
this datasheet lists octal dtr with 200mhz, which seems a bit ridiculous
for 512kB. The at25 driver only supports single bit SPI of course.
I'm not sure in which mode you are using this device, though. The DS
shows a non-volatile configuration register (Table 10, offset 0) and
it's default value is single bit SPI.
> This device is JEDEC compatible (JESD251 and JESD251-1), but it is not
> able to provide SFDP information.
>
> Link: https://www.everspin.com/file/158244/download
No newline.
> 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",
No name. We prefer to only have the ID for parts which has JEDED IDs.
> + .size = SZ_512K,
> + .sector_size = SZ_512K,
This should probably be removed (and then default to the 64k erase
size).
> + .flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR | SPI_NOR_HAS_LOCK |
Don't use SPI_NOR_NO_ERASE for new devices. Eventually, I like to get
rid of
this flag. This device is emulating the erase instruction, so it should
work
without.
SPI_NOR_NO_FR is wrong here. The DS says it supports fast read.
Please also have a look at [1] for the required tests.
-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
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-02-01 13:47 ` Michael Walle
0 siblings, 0 replies; 14+ messages in thread
From: Michael Walle @ 2024-02-01 13:47 UTC (permalink / raw)
To: Flavio Suligoi
Cc: Tudor Ambarus, Pratyush Yadav, Miquel Raynal, Richard Weinberger,
Vignesh Raghavendra, linux-mtd, linux-kernel
Hi,
> Add the Everspin EM0004LXB 4Mb (512KB) Industrial STT-MRAM Persistent
> Memory.
Out of curiosity, what is your use case here? Usually, I push back on
this small MRAM devices in SPI-NOR in favor of the at25 driver. But
this datasheet lists octal dtr with 200mhz, which seems a bit ridiculous
for 512kB. The at25 driver only supports single bit SPI of course.
I'm not sure in which mode you are using this device, though. The DS
shows a non-volatile configuration register (Table 10, offset 0) and
it's default value is single bit SPI.
> This device is JEDEC compatible (JESD251 and JESD251-1), but it is not
> able to provide SFDP information.
>
> Link: https://www.everspin.com/file/158244/download
No newline.
> 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",
No name. We prefer to only have the ID for parts which has JEDED IDs.
> + .size = SZ_512K,
> + .sector_size = SZ_512K,
This should probably be removed (and then default to the 64k erase
size).
> + .flags = SPI_NOR_NO_ERASE | SPI_NOR_NO_FR | SPI_NOR_HAS_LOCK |
Don't use SPI_NOR_NO_ERASE for new devices. Eventually, I like to get
rid of
this flag. This device is emulating the erase instruction, so it should
work
without.
SPI_NOR_NO_FR is wrong here. The DS says it supports fast read.
Please also have a look at [1] for the required tests.
-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
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 14+ messages in thread
* RE: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-02-01 13:47 ` Michael Walle
@ 2024-02-01 14:07 ` Flavio Suligoi
-1 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 14:07 UTC (permalink / raw)
To: Michael Walle
Cc: Tudor Ambarus, Pratyush Yadav, Miquel Raynal, Richard Weinberger,
Vignesh Raghavendra, linux-mtd, linux-kernel
Hi Michael,
...
> Subject: Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
>
> Hi,
>
> > Add the Everspin EM0004LXB 4Mb (512KB) Industrial STT-MRAM Persistent
> > Memory.
>
> Out of curiosity, what is your use case here? Usually, I push back on this small
> MRAM devices in SPI-NOR in favor of the at25 driver. But this datasheet lists
> octal dtr with 200mhz, which seems a bit ridiculous for 512kB. The at25 driver
> only supports single bit SPI of course.
>
> I'm not sure in which mode you are using this device, though. The DS shows a
> non-volatile configuration register (Table 10, offset 0) and it's default value is
> single bit SPI.
...
We adopted the MRAM to save some important application data in case of
power loss (there are some super-capacitors to maintain the power for a few
seconds).
We use this MRAM in single SPI mode (MISO, MOSI, clock and CS).
About the SPI frequency, we use only 30MHz, because it is a hw limit of the
MX8MP CPU.
I used the SPI-NOR driver, instead of at25, because in everspin.c there are other
Everspin MRAMs devices (already used in other our boards).
Best regards,
Flavio
^ permalink raw reply [flat|nested] 14+ messages in thread
* RE: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-02-01 14:07 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-02-01 14:07 UTC (permalink / raw)
To: Michael Walle
Cc: Tudor Ambarus, Pratyush Yadav, Miquel Raynal, Richard Weinberger,
Vignesh Raghavendra, linux-mtd, linux-kernel
Hi Michael,
...
> Subject: Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
>
> Hi,
>
> > Add the Everspin EM0004LXB 4Mb (512KB) Industrial STT-MRAM Persistent
> > Memory.
>
> Out of curiosity, what is your use case here? Usually, I push back on this small
> MRAM devices in SPI-NOR in favor of the at25 driver. But this datasheet lists
> octal dtr with 200mhz, which seems a bit ridiculous for 512kB. The at25 driver
> only supports single bit SPI of course.
>
> I'm not sure in which mode you are using this device, though. The DS shows a
> non-volatile configuration register (Table 10, offset 0) and it's default value is
> single bit SPI.
...
We adopted the MRAM to save some important application data in case of
power loss (there are some super-capacitors to maintain the power for a few
seconds).
We use this MRAM in single SPI mode (MISO, MOSI, clock and CS).
About the SPI frequency, we use only 30MHz, because it is a hw limit of the
MX8MP CPU.
I used the SPI-NOR driver, instead of at25, because in everspin.c there are other
Everspin MRAMs devices (already used in other our boards).
Best regards,
Flavio
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-04-05 10:01 ` Flavio Suligoi
@ 2024-04-05 14:41 ` Michael Walle
-1 siblings, 0 replies; 14+ messages in thread
From: Michael Walle @ 2024-04-05 14:41 UTC (permalink / raw)
To: Flavio Suligoi, Tudor Ambarus, Pratyush Yadav, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1549 bytes --]
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
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^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-04-05 14:41 ` Michael Walle
0 siblings, 0 replies; 14+ messages in thread
From: Michael Walle @ 2024-04-05 14:41 UTC (permalink / raw)
To: Flavio Suligoi, Tudor Ambarus, Pratyush Yadav, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel
[-- Attachment #1.1: Type: text/plain, Size: 1549 bytes --]
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
[-- Attachment #1.2: signature.asc --]
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______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-04-05 10:01 ` Flavio Suligoi
@ 2024-04-05 13:03 ` Francesco Dolcini
-1 siblings, 0 replies; 14+ messages in thread
From: Francesco Dolcini @ 2024-04-05 13:03 UTC (permalink / raw)
To: Flavio Suligoi
Cc: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra, linux-mtd, linux-kernel
Hello Flavio, thanks for your patch.
On Fri, Apr 05, 2024 at 12:01:04PM +0200, 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.
>
> Link: https://www.everspin.com/file/158244/download
>
No empty lines in-between tags
> Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Francesco
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-04-05 13:03 ` Francesco Dolcini
0 siblings, 0 replies; 14+ messages in thread
From: Francesco Dolcini @ 2024-04-05 13:03 UTC (permalink / raw)
To: Flavio Suligoi
Cc: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra, linux-mtd, linux-kernel
Hello Flavio, thanks for your patch.
On Fri, Apr 05, 2024 at 12:01:04PM +0200, 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.
>
> Link: https://www.everspin.com/file/158244/download
>
No empty lines in-between tags
> Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Francesco
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
2024-04-05 10:01 [PATCH 0/1] " Flavio Suligoi
@ 2024-04-05 10:01 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-04-05 10:01 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
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 |
+ SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6,
+ .no_sfdp_flags = SPI_NOR_SKIP_SFDP,
}
};
--
2.34.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH 1/1] mtd: spi-nor: everspin: add em004lxb entry
@ 2024-04-05 10:01 ` Flavio Suligoi
0 siblings, 0 replies; 14+ messages in thread
From: Flavio Suligoi @ 2024-04-05 10:01 UTC (permalink / raw)
To: Tudor Ambarus, Pratyush Yadav, Michael Walle, Miquel Raynal,
Richard Weinberger, Vignesh Raghavendra
Cc: linux-mtd, linux-kernel, Flavio Suligoi
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.
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 |
+ SPI_NOR_HAS_TB | SPI_NOR_4BIT_BP | SPI_NOR_BP3_SR_BIT6,
+ .no_sfdp_flags = SPI_NOR_SKIP_SFDP,
}
};
--
2.34.1
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^ permalink raw reply related [flat|nested] 14+ messages in thread
end of thread, other threads:[~2024-04-05 14:41 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-02-01 13:17 [PATCH 0/1] mtd: spi-nor: everspin: add em004lxb entry Flavio Suligoi
2024-02-01 13:17 ` Flavio Suligoi
2024-02-01 13:17 ` [PATCH 1/1] " Flavio Suligoi
2024-02-01 13:17 ` Flavio Suligoi
2024-02-01 13:47 ` Michael Walle
2024-02-01 13:47 ` Michael Walle
2024-02-01 14:07 ` Flavio Suligoi
2024-02-01 14:07 ` Flavio Suligoi
2024-04-05 10:01 [PATCH 0/1] " Flavio Suligoi
2024-04-05 10:01 ` [PATCH 1/1] " Flavio Suligoi
2024-04-05 10:01 ` Flavio Suligoi
2024-04-05 13:03 ` Francesco Dolcini
2024-04-05 13:03 ` Francesco Dolcini
2024-04-05 14:41 ` Michael Walle
2024-04-05 14:41 ` Michael Walle
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