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Signed-off-by: Haibo Chen Reviewed-by: Tudor Ambarus --- drivers/mtd/spi-nor/micron-st.c | 70 ++++++++++++++++++++-----------------= ---- 1 file changed, 35 insertions(+), 35 deletions(-) diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-s= t.c index 187239ccd549510c6e9a6eacf4ae41158287e077..92eb14ca76c57f29ece1edb3fe6= 52c56d1c2888f 100644 --- a/drivers/mtd/spi-nor/micron-st.c +++ b/drivers/mtd/spi-nor/micron-st.c @@ -127,6 +127,38 @@ static int micron_st_nor_set_octal_dtr(struct spi_nor = *nor, bool enable) micron_st_nor_octal_dtr_dis(nor); } =20 +static int micron_st_nor_four_die_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params =3D nor->params; + + params->die_erase_opcode =3D SPINOR_OP_MT_DIE_ERASE; + params->n_dice =3D 4; + + /* + * Unfortunately the die erase opcode does not have a 4-byte opcode + * correspondent for these flashes. The SFDP 4BAIT table fails to + * consider the die erase too. We're forced to enter in the 4 byte + * address mode in order to benefit of the die erase. + */ + return spi_nor_set_4byte_addr_mode(nor, true); +} + +static int micron_st_nor_two_die_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params =3D nor->params; + + params->die_erase_opcode =3D SPINOR_OP_MT_DIE_ERASE; + params->n_dice =3D 2; + + /* + * Unfortunately the die erase opcode does not have a 4-byte opcode + * correspondent for these flashes. The SFDP 4BAIT table fails to + * consider the die erase too. We're forced to enter in the 4 byte + * address mode in order to benefit of the die erase. + */ + return spi_nor_set_4byte_addr_mode(nor, true); +} + static void mt35xu512aba_default_init(struct spi_nor *nor) { nor->params->set_octal_dtr =3D micron_st_nor_set_octal_dtr; @@ -193,48 +225,16 @@ static const struct spi_nor_fixups mt25qu512a_fixups = =3D { .post_bfpt =3D mt25qu512a_post_bfpt_fixup, }; =20 -static int st_nor_four_die_late_init(struct spi_nor *nor) -{ - struct spi_nor_flash_parameter *params =3D nor->params; - - params->die_erase_opcode =3D SPINOR_OP_MT_DIE_ERASE; - params->n_dice =3D 4; - - /* - * Unfortunately the die erase opcode does not have a 4-byte opcode - * correspondent for these flashes. The SFDP 4BAIT table fails to - * consider the die erase too. We're forced to enter in the 4 byte - * address mode in order to benefit of the die erase. - */ - return spi_nor_set_4byte_addr_mode(nor, true); -} - -static int st_nor_two_die_late_init(struct spi_nor *nor) -{ - struct spi_nor_flash_parameter *params =3D nor->params; - - params->die_erase_opcode =3D SPINOR_OP_MT_DIE_ERASE; - params->n_dice =3D 2; - - /* - * Unfortunately the die erase opcode does not have a 4-byte opcode - * correspondent for these flashes. The SFDP 4BAIT table fails to - * consider the die erase too. We're forced to enter in the 4 byte - * address mode in order to benefit of the die erase. - */ - return spi_nor_set_4byte_addr_mode(nor, true); -} - static const struct spi_nor_fixups n25q00_fixups =3D { - .late_init =3D st_nor_four_die_late_init, + .late_init =3D micron_st_nor_four_die_late_init, }; =20 static const struct spi_nor_fixups mt25q01_fixups =3D { - .late_init =3D st_nor_two_die_late_init, + .late_init =3D micron_st_nor_two_die_late_init, }; =20 static const struct spi_nor_fixups mt25q02_fixups =3D { - .late_init =3D st_nor_four_die_late_init, + .late_init =3D micron_st_nor_four_die_late_init, }; =20 static const struct flash_info st_nor_parts[] =3D { --=20 2.34.1 From nobody Sun Feb 8 07:45:14 2026 Received: from OSPPR02CU001.outbound.protection.outlook.com (mail-norwayeastazon11013022.outbound.protection.outlook.com [40.107.159.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A092D27F195 for ; 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Unfortunately the die erase opcode does not have a 4-byte opcode, here forced to enter in the 4 byte address mode in order to benefit of the die erase. Link: https://datasheet.octopart.com/MT35XU02GCBA1G12-0AAT-Micron-datasheet= -138896808.pdf Signed-off-by: Haibo Chen Reviewed-by: Tudor Ambarus >=20 --- drivers/mtd/spi-nor/micron-st.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-s= t.c index 92eb14ca76c57f29ece1edb3fe652c56d1c2888f..89cd146095584ddebdd258a186f= 6398b420e5800 100644 --- a/drivers/mtd/spi-nor/micron-st.c +++ b/drivers/mtd/spi-nor/micron-st.c @@ -159,6 +159,22 @@ static int micron_st_nor_two_die_late_init(struct spi_= nor *nor) return spi_nor_set_4byte_addr_mode(nor, true); } =20 +static int micron_st_nor_one_die_late_init(struct spi_nor *nor) +{ + struct spi_nor_flash_parameter *params =3D nor->params; + + params->die_erase_opcode =3D SPINOR_OP_MT_DIE_ERASE; + params->n_dice =3D 1; + + /* + * Unfortunately the die erase opcode does not have a 4-byte opcode + * correspondent for these flashes. The SFDP 4BAIT table fails to + * consider the die erase too. We're forced to enter in the 4 byte + * address mode in order to benefit of the die erase. + */ + return spi_nor_set_4byte_addr_mode(nor, true); +} + static void mt35xu512aba_default_init(struct spi_nor *nor) { nor->params->set_octal_dtr =3D micron_st_nor_set_octal_dtr; @@ -189,6 +205,7 @@ static int mt35xu512aba_post_sfdp_fixup(struct spi_nor = *nor) static const struct spi_nor_fixups mt35xu512aba_fixups =3D { .default_init =3D mt35xu512aba_default_init, .post_sfdp =3D mt35xu512aba_post_sfdp_fixup, + .late_init =3D micron_st_nor_one_die_late_init, }; =20 static const struct flash_info micron_nor_parts[] =3D { --=20 2.34.1 From nobody Sun Feb 8 07:45:14 2026 Received: from OSPPR02CU001.outbound.protection.outlook.com (mail-norwayeastazon11013022.outbound.protection.outlook.com [40.107.159.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 007D01CAA85 for ; Mon, 10 Nov 2025 04:02:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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SFDP contain the wrong size, so define the size dierctly in the flash info. And it also support 8D-8D-8D mode, but SFDP lack SNOR_F_IO_MODE_EN_VOLATILE, so add this fixup flags here. Link: https://datasheet.octopart.com/MT35XU02GCBA1G12-0AAT-Micron-datasheet= -138896808.pdf Signed-off-by: Haibo Chen --- 1) This mt35xu01gbba is populated on the imx95-19x19-evk board, was tested at 200MHz using nxp,imx95-fspi SPI controller. 2) root@imx95evk:~# cat /sys/bus/spi/devices/spi1.0/spi-nor/partname mt35xu01gbba root@imx95evk:~# cat /sys/bus/spi/devices/spi1.0/spi-nor/jedec_id 2c5b1b root@imx95evk:~# cat /sys/bus/spi/devices/spi1.0/spi-nor/manufacturer micron root@imx95evk:~# hexdump -Cv /sys/bus/spi/devices/spi1.0/spi-nor/sfdp 00000000 53 46 44 50 0a 01 03 ff 00 08 01 17 30 00 00 ff |SFDP.......= .0...| 00000010 84 00 01 02 90 00 00 ff 05 01 01 06 a0 00 00 ff |...........= .....| 00000020 0a 00 01 08 b0 00 00 ff ff ff ff ff ff ff ff ff |...........= .....| 00000030 e5 20 8a ff ff ff ff 3f 00 00 00 00 00 00 00 00 |. .....?...= .....| 00000040 ee ff ff ff ff ff 00 00 ff ff 00 00 0c 20 11 d8 |...........= .. ..| 00000050 0f 52 00 00 39 61 99 00 87 8e 03 d3 ac a1 27 3d |.R..9a.....= ...'=3D| 00000060 7a 75 7a 75 fb bd d5 5c 00 00 70 ff 81 50 f8 a1 |zuzu...\..p= ..P..| 00000070 2f cb 27 8b 00 00 04 01 00 06 01 00 ff ff ff 8e |/.'........= .....| 00000080 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff |...........= .....| 00000090 43 0e ff ff 21 dc 5c ff ff ff ff ff ff ff ff ff |C...!.\....= .....| 000000a0 00 0b 80 9e b1 81 b5 85 00 f0 ff 9f 00 0a 00 00 |...........= .....| 000000b0 00 0a 1a 88 10 00 00 00 ff ff ff ff ff ff ff ff |...........= .....| 000000c0 00 00 06 01 00 00 00 00 14 01 81 03 00 00 00 00 |...........= .....| 000000d0 root@imx95evk:~# sha256sum /sys/bus/spi/devices/spi1.0/spi-nor/sfdp 3848f0bd2436d7ca1373cee33f90e09d6479d0f4dc4bfd19f6a082d9e0039495 /sys/b= us/spi/devices/spi1.0/spi-nor/sfdp 3) root@imx95evk:~# cat /sys/kernel/debug/spi-nor/spi1.0/capabilities Supported read modes by the flash 1S-1S-1S opcode 0x13 mode cycles 0 dummy cycles 0 1S-1S-8S opcode 0x7c mode cycles 1 dummy cycles 7 1S-8S-8S opcode 0xcc mode cycles 1 dummy cycles 15 8D-8D-8D opcode 0xfd mode cycles 0 dummy cycles 20 Supported page program modes by the flash 1S-1S-1S opcode 0x12 8D-8D-8D opcode 0x12 root@imx95evk:~# cat /sys/kernel/debug/spi-nor/spi1.0/params name mt35xu01gbba id 2c 5b 1b 10 41 00 size 128 MiB write size 1 page size 256 address nbytes 4 flags 4B_OPCODES | HAS_4BAIT | HAS_LOCK | IO_MODE_EN_VOLATILE = | SOFT_RESET opcodes read 0xfd dummy cycles 20 erase 0xdc program 0x12 8D extension repeat protocols read 8D-8D-8D write 8D-8D-8D register 8D-8D-8D erase commands 21 (4.00 KiB) [1] 5c (32.0 KiB) [2] dc (128 KiB) [3] c4 (128 MiB) sector map region (in hex) | erase mask | overlaid ------------------+------------+---------- 00000000-07ffffff | [ 3] | no 4) root@imx95evk:~# dd if=3D/dev/urandom of=3D./spi_test bs=3D1M count=3D2 2+0 records in 2+0 records out 2097152 bytes (2.1 MB, 2.0 MiB) copied, 0.0207974 s, 101 MB/s root@imx95evk:~# mtd_debug erase /dev/mtd0 0 2097152 Erased 2097152 bytes from address 0x00000000 in flash root@imx95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read Copied 2097152 bytes from address 0x00000000 in flash to spi_read root@imx95evk:~# hexdump spi_read 0000000 ffff ffff ffff ffff ffff ffff ffff ffff * 0200000 root@imx95evk:~# sha256sum spi_read 4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_re= ad root@imx95evk:~# mtd_debug write /dev/mtd0 0 2097152 spi_test Copied 2097152 bytes from spi_test to address 0x00000000 in flash root@imx95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read Copied 2097152 bytes from address 0x00000000 in flash to spi_read root@imx95evk:~# sha256sum spi* 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205 spi_re= ad 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205 spi_te= st root@imx95evk:~# mtd_debug erase /dev/mtd0 0 2097152 Erased 2097152 bytes from address 0x00000000 in flash root@imx95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read Copied 2097152 bytes from address 0x00000000 in flash to spi_read root@imx95evk:~# sha256sum spi* 4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5 spi_re= ad 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205 spi_te= st root@imx95evk:~# mtd_debug info /dev/mtd0 mtd.type =3D MTD_NORFLASH mtd.flags =3D MTD_CAP_NORFLASH mtd.size =3D 134217728 (128M) mtd.erasesize =3D 131072 (128K) mtd.writesize =3D 1 mtd.oobsize =3D 0 regions =3D 0 root@imx95evk:~# flash_erase /dev/mtd0 0 0 Erasing 131072 Kibyte @ 0 -- 100 % complete root@imx95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read Copied 2097152 bytes from address 0x00000000 in flash to spi_read root@imx95evk:~# hexdump spi_read 0000000 ffff ffff ffff ffff ffff ffff ffff ffff * 0200000 --- drivers/mtd/spi-nor/micron-st.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-s= t.c index 89cd146095584ddebdd258a186f6398b420e5800..f724313f4dd3720908968c670e8= d3d58f41c099c 100644 --- a/drivers/mtd/spi-nor/micron-st.c +++ b/drivers/mtd/spi-nor/micron-st.c @@ -208,6 +208,12 @@ static const struct spi_nor_fixups mt35xu512aba_fixups= =3D { .late_init =3D micron_st_nor_one_die_late_init, }; =20 +static const struct spi_nor_fixups mt35xu01gbba_fixups =3D { + .default_init =3D mt35xu512aba_default_init, + .post_sfdp =3D mt35xu512aba_post_sfdp_fixup, + .late_init =3D micron_st_nor_two_die_late_init, +}; + static const struct flash_info micron_nor_parts[] =3D { { .id =3D SNOR_ID(0x2c, 0x5b, 0x1a), @@ -219,6 +225,16 @@ static const struct flash_info micron_nor_parts[] =3D { .mfr_flags =3D USE_FSR, .fixup_flags =3D SPI_NOR_4B_OPCODES | SPI_NOR_IO_MODE_EN_VOLATILE, .fixups =3D &mt35xu512aba_fixups, + }, { + .id =3D SNOR_ID(0x2c, 0x5b, 0x1b), + .name =3D "mt35xu01gbba", + .sector_size =3D SZ_128K, + .size =3D SZ_128M, + .no_sfdp_flags =3D SECT_4K | SPI_NOR_OCTAL_READ | + SPI_NOR_OCTAL_DTR_READ | SPI_NOR_OCTAL_DTR_PP, + .mfr_flags =3D USE_FSR, + .fixup_flags =3D 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VI0PR04MB10949 mt35xu02gcba is similar with mt35xu01gbba and mt35xu512aba, but with four dies inside. And it also support 8D-8D-8D mode, but SFDP lack SNOR_F_IO_MODE_EN_VOLATILE, so add this fixup flags here. Link: https://datasheet.octopart.com/MT35XU02GCBA1G12-0AAT-Micron-datasheet= -138896808.pdf Signed-off-by: Haibo Chen --- drivers/mtd/spi-nor/micron-st.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-s= t.c index f724313f4dd3720908968c670e8d3d58f41c099c..b36174436b7aa0f7768dbe48e4a= d4927c08a3d6d 100644 --- a/drivers/mtd/spi-nor/micron-st.c +++ b/drivers/mtd/spi-nor/micron-st.c @@ -214,6 +214,12 @@ static const struct spi_nor_fixups mt35xu01gbba_fixups= =3D { .late_init =3D micron_st_nor_two_die_late_init, }; =20 +static const struct spi_nor_fixups mt35xu02gcba_fixups =3D { + .default_init =3D mt35xu512aba_default_init, + .post_sfdp =3D mt35xu512aba_post_sfdp_fixup, + .late_init =3D micron_st_nor_four_die_late_init, +}; + static const struct flash_info micron_nor_parts[] =3D { { .id =3D SNOR_ID(0x2c, 0x5b, 0x1a), @@ -237,12 +243,13 @@ static const struct flash_info micron_nor_parts[] =3D= { .fixups =3D &mt35xu01gbba_fixups, }, { .id =3D SNOR_ID(0x2c, 0x5b, 0x1c), - .name =3D "mt35xu02g", + .name =3D "mt35xu02gcba", .sector_size =3D SZ_128K, .size =3D SZ_256M, .no_sfdp_flags =3D SECT_4K | SPI_NOR_OCTAL_READ, .mfr_flags =3D USE_FSR, - .fixup_flags =3D SPI_NOR_4B_OPCODES, + .fixup_flags =3D SPI_NOR_4B_OPCODES | SPI_NOR_IO_MODE_EN_VOLATILE, + .fixups =3D &mt35xu02gcba_fixups, }, }; =20 --=20 2.34.1