--- /dev/null
+From a4f9dd55c5e1bb951db6f1dee20e62e0103f3438 Mon Sep 17 00:00:00 2001
+From: Chuanhong Guo <gch981213@gmail.com>
+Date: Sun, 20 Mar 2022 17:59:57 +0800
+Subject: [PATCH 1/5] mtd: spinand: gigadevice: fix Quad IO for GD5F1GQ5UExxG
+
+Read From Cache Quad IO (EBH) uses 2 dummy bytes on this chip according
+to page 23 of the datasheet[0].
+
+[0]: https://www.gigadevice.com/datasheet/gd5f1gq5xexxg/
+
+Fixes: 469b99248985 ("mtd: spinand: gigadevice: Support GD5F1GQ5UExxG")
+Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-2-gch981213@gmail.com
+---
+ drivers/mtd/nand/spi/gigadevice.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
+index 1dd1c5898093..da77ab20296e 100644
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -39,6 +39,14 @@ static SPINAND_OP_VARIANTS(read_cache_variants_f,
+ SPINAND_PAGE_READ_FROM_CACHE_OP_3A(true, 0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_OP_3A(false, 0, 0, NULL, 0));
+
++static SPINAND_OP_VARIANTS(read_cache_variants_1gq5,
++ SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
++
+ static SPINAND_OP_VARIANTS(write_cache_variants,
+ SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+ SPINAND_PROG_LOAD(true, 0, NULL, 0));
+@@ -339,7 +347,7 @@ static const struct spinand_info gigadevice_spinand_table[] = {
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x51),
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(4, 512),
+- SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+--
+2.35.1
+
--- /dev/null
+From 573eec222bc82fb5e724586267fbbb1aed9ffd03 Mon Sep 17 00:00:00 2001
+From: Chuanhong Guo <gch981213@gmail.com>
+Date: Sun, 20 Mar 2022 17:59:58 +0800
+Subject: [PATCH 2/5] mtd: spinand: gigadevice: add support for GD5FxGQ4xExxG
+
+Add support for:
+ GD5F1GQ4RExxG
+ GD5F2GQ4{U,R}ExxG
+
+These chips differ from GD5F1GQ4UExxG only in chip ID, voltage
+and capacity.
+
+Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-3-gch981213@gmail.com
+---
+ drivers/mtd/nand/spi/gigadevice.c | 30 ++++++++++++++++++++++++++++++
+ 1 file changed, 30 insertions(+)
+
+diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
+index da77ab20296e..85a61d3d8467 100644
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -333,6 +333,36 @@ static const struct spinand_info gigadevice_spinand_table[] = {
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
+ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F1GQ4RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xc1),
++ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GQ4UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xd2),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GQ4RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xc2),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
+ SPINAND_INFO("GD5F1GQ4UFxxG",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE, 0xb1, 0x48),
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+--
+2.35.1
+
--- /dev/null
+From 620a988813403318023296b61228ee8f3fcdb8e0 Mon Sep 17 00:00:00 2001
+From: Chuanhong Guo <gch981213@gmail.com>
+Date: Sun, 20 Mar 2022 17:59:59 +0800
+Subject: [PATCH 3/5] mtd: spinand: gigadevice: add support for GD5F1GQ5RExxG
+
+This chip is the 1.8v version of GD5F1GQ5UExxG.
+
+Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-4-gch981213@gmail.com
+---
+ drivers/mtd/nand/spi/gigadevice.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
+index 85a61d3d8467..d519bb85f0e7 100644
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -383,6 +383,16 @@ static const struct spinand_info gigadevice_spinand_table[] = {
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
+ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F1GQ5RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x41),
++ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
++ NAND_ECCREQ(4, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq5xexxg_ecc_get_status)),
+ };
+
+ static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = {
+--
+2.35.1
+
--- /dev/null
+From 194ec04b3a9e7fa97d1fbef296410631bc3cf1c8 Mon Sep 17 00:00:00 2001
+From: Chuanhong Guo <gch981213@gmail.com>
+Date: Sun, 20 Mar 2022 18:00:00 +0800
+Subject: [PATCH 4/5] mtd: spinand: gigadevice: add support for GD5F{2,
+ 4}GQ5xExxG
+
+Add support for:
+ GD5F2GQ5{U,R}ExxG
+ GD5F4GQ6{U,R}ExxG
+
+These chips uses 4 dummy bytes for quad io and 2 dummy bytes for dual io.
+Besides that and memory layout, they are identical to their 1G variant.
+
+Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-5-gch981213@gmail.com
+---
+ drivers/mtd/nand/spi/gigadevice.c | 48 +++++++++++++++++++++++++++++++
+ 1 file changed, 48 insertions(+)
+
+diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
+index d519bb85f0e7..fcd1c4e474a2 100644
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -47,6 +47,14 @@ static SPINAND_OP_VARIANTS(read_cache_variants_1gq5,
+ SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
+
++static SPINAND_OP_VARIANTS(read_cache_variants_2gq5,
++ SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 4, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 2, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
++ SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
++
+ static SPINAND_OP_VARIANTS(write_cache_variants,
+ SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+ SPINAND_PROG_LOAD(true, 0, NULL, 0));
+@@ -393,6 +401,46 @@ static const struct spinand_info gigadevice_spinand_table[] = {
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
+ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GQ5UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x52),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(4, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_2gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GQ5RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x42),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(4, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_2gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F4GQ6UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x55),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 2, 1),
++ NAND_ECCREQ(4, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_2gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F4GQ6RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x45),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 2, 1),
++ NAND_ECCREQ(4, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_2gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq5xexxg_ecc_get_status)),
+ };
+
+ static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = {
+--
+2.35.1
+
--- /dev/null
+From 54647cd003c08b714474a5b599a147ec6a160486 Mon Sep 17 00:00:00 2001
+From: Chuanhong Guo <gch981213@gmail.com>
+Date: Sun, 20 Mar 2022 18:00:01 +0800
+Subject: [PATCH 5/5] mtd: spinand: gigadevice: add support for GD5FxGM7xExxG
+
+Add support for:
+ GD5F{1,2}GM7{U,R}ExxG
+ GD5F4GM8{U,R}ExxG
+
+These are new 27nm counterparts for the GD5FxGQ4 chips from GigaDevice
+with 8b/512b on-die ECC capability.
+These chips (and currently supported GD5FxGQ5 chips) have QIO DTR
+instruction for reading page cache. It isn't added in this patch because
+I don't have a DTR spi controller for testing.
+
+Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-6-gch981213@gmail.com
+---
+ drivers/mtd/nand/spi/gigadevice.c | 60 +++++++++++++++++++++++++++++++
+ 1 file changed, 60 insertions(+)
+
+diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
+index fcd1c4e474a2..6b043e24855f 100644
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -441,6 +441,66 @@ static const struct spinand_info gigadevice_spinand_table[] = {
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
+ gd5fxgq5xexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F1GM7UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x91),
++ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F1GM7RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x81),
++ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GM7UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F2GM7RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x82),
++ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F4GM8UExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x95),
++ NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
++ SPINAND_INFO("GD5F4GM8RExxG",
++ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x85),
++ NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 1, 1, 1),
++ NAND_ECCREQ(8, 512),
++ SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
++ &write_cache_variants,
++ &update_cache_variants),
++ SPINAND_HAS_QE_BIT,
++ SPINAND_ECCINFO(&gd5fxgqx_variant2_ooblayout,
++ gd5fxgq4uexxg_ecc_get_status)),
+ };
+
+ static const struct spinand_manufacturer_ops gigadevice_spinand_manuf_ops = {
+--
+2.35.1
+