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Message-ID: <20250721202257.83936-1-marek.vasut+renesas@mailbox.org>
Date: Mon, 21 Jul 2025 22:22:26 +0200
From: Marek Vasut <marek.vasut+renesas@...lbox.org>
To: linux-mtd@...ts.infradead.org
Cc: Marek Vasut <marek.vasut+renesas@...lbox.org>,
Michael Walle <mwalle@...nel.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
Pratyush Yadav <pratyush@...nel.org>,
Richard Weinberger <richard@....at>,
Tudor Ambarus <tudor.ambarus@...aro.org>,
Vignesh Raghavendra <vigneshr@...com>,
linux-kernel@...r.kernel.org
Subject: [PATCH v2] mtd: spi-nor: winbond: Add support for W77Q51NW
Add IDs for Winbond W77Q51NW, 512M-bit Secure Serial Flash Memory
with Post-Quantum Cryptography, Dual/Quad SPI, QPI and DTR . The
flash part is similar to W25Q512NWM .
Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org>
---
Cc: Michael Walle <mwalle@...nel.org>
Cc: Miquel Raynal <miquel.raynal@...tlin.com>
Cc: Pratyush Yadav <pratyush@...nel.org>
Cc: Richard Weinberger <richard@....at>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>
Cc: Vignesh Raghavendra <vigneshr@...com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-mtd@...ts.infradead.org
---
V2: - Un-name the SPI NOR
- Include output of https://docs.kernel.org/driver-api/mtd/spi-nor.html#minimum-testing-requirements
---
This flash is populated on the Retronix R-Car V4H Sparrow Hawk EVTB1 board
and was tested at 40 MHz frequency using the renesas,r8a779g0-rpc-if SPI
controller.
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id
ef8a1a
$ cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer
winbond
$ xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp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$ sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
98f6f35460da6c6c617a6da2cbaf93cee5310a30d5d2f91af4613e04941fe863 /sys/bus/spi/devices/spi0.0/spi-nor/sfdp
$ cat /sys/kernel/debug/spi-nor/spi0.0/capabilities
Supported read modes by the flash
1S-1S-1S
opcode 0x13
mode cycles 0
dummy cycles 0
1S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 6
4S-4S-4S
opcode 0xec
mode cycles 2
dummy cycles 6
Supported page program modes by the flash
1S-1S-1S
opcode 0x12
1S-4S-4S
opcode 0x3e
$ cat /sys/kernel/debug/spi-nor/spi0.0/params
name (null)
id ef 8a 1a 00 00 00
size 64.0 MiB
write size 1
page size 256
address nbytes 4
flags 4B_OPCODES | HAS_4BAIT | HAS_16BIT_SR | SOFT_RESET
opcodes
read 0xec
dummy cycles 8
erase 0x21
program 0x3e
8D extension invert
protocols
read 1S-4S-4S
write 1S-4S-4S
register 1S-1S-1S
erase commands
21 (4.00 KiB) [1]
ff (32.0 KiB) [2]
dc (64.0 KiB) [3]
c7 (64.0 MiB)
sector map
region (in hex) | erase mask | overlaid
------------------+------------+----------
00000000-03ffffff | [ 1 ] | no
$ cat /proc/mtd
dev: size erasesize name
mtd0: 01000000 00001000 "boot"
mtd1: 02f80000 00001000 "user"
mtd2: 00040000 00001000 "env1"
mtd3: 00040000 00001000 "env2"
$ dd if=/dev/urandom of=./spi_test bs=1M count=2
2+0 records in
2+0 records out
2097152 bytes (2.1 MB, 2.0 MiB) copied, 0.0129542 s, 162 MB/s
$ mtd_debug erase /dev/mtd1 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
$ mtd_debug read /dev/mtd1 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
$ hexdump spi_read
0000000 ffff ffff ffff ffff ffff ffff ffff ffff
*
0200000
$ sha256sum spi_read
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
$ mtd_debug write /dev/mtd1 0 2097152 spi_test
Copied 2097152 bytes from spi_test to address 0x00000000 in flash
$ mtd_debug read /dev/mtd1 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
$ sha256sum spi*
6f59068c602a91d09e181a44109978239ca40dc539990cf695f5b65fa8cd03f6 spi_read
6f59068c602a91d09e181a44109978239ca40dc539990cf695f5b65fa8cd03f6 spi_test
$ mtd_debug erase /dev/mtd1 0 2097152
Erased 2097152 bytes from address 0x00000000 in flash
$ mtd_debug read /dev/mtd1 0 2097152 spi_read
Copied 2097152 bytes from address 0x00000000 in flash to spi_read
$ sha256sum spi*
4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_read
6f59068c602a91d09e181a44109978239ca40dc539990cf695f5b65fa8cd03f6 spi_test
$ mtd_debug info /dev/mtd1
mtd.type = MTD_NORFLASH
mtd.flags = MTD_CAP_NORFLASH
mtd.size = 49807360 (47M)
mtd.erasesize = 4096 (4K)
mtd.writesize = 1
mtd.oobsize = 0
regions = 0
---
drivers/mtd/spi-nor/winbond.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 63a93c9eb917..3881a1c8a4a2 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -343,6 +343,10 @@ static const struct flash_info winbond_nor_parts[] = {
.id = SNOR_ID(0xef, 0x80, 0x20),
.name = "w25q512nwm",
.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
+ }, {
+ /* W77Q51NW */
+ .id = SNOR_ID(0xef, 0x8a, 0x1a),
+ .otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
},
};
--
2.47.2
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