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Fri, 13 Feb 2026 06:42:48 -0800 (PST) From: Weimin Wu To: tudor.ambarus@linaro.org Cc: pratyush@kernel.org, mwalle@kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Weimin Wu Subject: [PATCH] mtd: spi-nor: gigadevice: add support for GD25LQ255E Date: Fri, 13 Feb 2026 22:41:33 +0800 Message-ID: <20260213144133.1778932-1-wuweimin@huaqin.corp-partner.google.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" gd25lq255e is similar with gd25lq256d, has 32MB of total capacity. It support Quad Page Program which mean programming the memory using four pins: IO0, IO1, IO2, and IO3. Signed-off-by: Weimin Wu --- / # cat /sys/bus/spi/devices/spi0.0/spi-nor/partname gd25lq256d / # cat /sys/bus/spi/devices/spi0.0/spi-nor/manufacturer gigadevice / # cat /sys/bus/spi/devices/spi0.0/spi-nor/jedec_id c86019 / # xxd -p /sys/bus/spi/devices/spi0.0/spi-nor/sfdp 53464450060102ff00060110300000ffc8000103900000ff84000102c000 00ffffffffffffffffffffffffffffffffffe520f3ffffffff0f44eb086b 083b42bbfeffffffffff00ffffff44eb0c200f5210d800ffd439a5fe82e4 1452ec6216337a757a7504bdd55c2906140008500001ffffffffffffffff ffffffffffffffffffffffffffffffffffffffffffffffff002050169df9 77648fdbffffffffffffffffffffffffffffffffffffffffffffffffffff ffffffffffffffffffffffffff0effff215cdcff / # sha256sum /sys/bus/spi/devices/spi0.0/spi-nor/sfdp 9f56d460181f7c0b6cc16a69554e3b587948b5f65323e976d0a4f1dbbcb93d94 /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-1S-1S (fast read) opcode 0x0c mode cycles 0 dummy cycles 8 1S-1S-2S opcode 0x3c mode cycles 0 dummy cycles 8 1S-2S-2S opcode 0xbc mode cycles 2 dummy cycles 2 1S-1S-4S opcode 0x6c mode cycles 0 dummy cycles 8 1S-4S-4S opcode 0xec mode cycles 2 dummy cycles 4 4S-4S-4S opcode 0xec mode cycles 2 dummy cycles 4 Supported page program modes by the flash 1S-1S-1S opcode 0x12 1S-1S-4S opcode 0x34 / # cat /sys/kernel/debug/spi-nor/spi0.0/params name gd25lq256d id c8 60 19 c8 60 19 size 32.0 MiB write size 1 page size 256 address nbytes 4 flags HAS_SR_TB | 4B_OPCODES | HAS_4BAIT | HAS_LOCK | HAS_16BIT_SR | NO_RE= AD_CR | SOFT_RESET opcodes read 0x0c dummy cycles 8 erase 0xdc program 0x12 8D extension none protocols read 1S-1S-1S write 1S-1S-1S register 1S-1S-1S erase commands 21 (4.00 KiB) [1] 5c (32.0 KiB) [2] dc (64.0 KiB) [3] c7 (32.0 MiB) sector map region (in hex) | erase mask | overlaid ------------------+------------+---------- 00000000-01ffffff | [ 3] | no --- drivers/mtd/spi-nor/gigadevice.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/mtd/spi-nor/gigadevice.c b/drivers/mtd/spi-nor/gigadev= ice.c index ef1edd0ad..356a3f196 100644 --- a/drivers/mtd/spi-nor/gigadevice.c +++ b/drivers/mtd/spi-nor/gigadevice.c @@ -82,6 +82,12 @@ static const struct flash_info gigadevice_nor_parts[] = =3D { .size =3D SZ_16M, .flags =3D SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB, .no_sfdp_flags =3D SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, + }, { + .id =3D SNOR_ID(0xc8, 0x60, 0x19), + .name =3D "gd25lq256d", + .size =3D SZ_32M, + .flags =3D SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_QUAD_PP, + .no_sfdp_flags =3D SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, }, }; =20 --=20 2.43.0