[PATCH 6/6] mtd: spi-nor: micron-st: Add support for mt25qu01g

[Tudor Ambarus]

From: Fabio Estevam <festevam at denx.de>

Add support for the MT25QU01G 128MB Micron Serial NOR Flash Memory
model.

Datasheet:
https://www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/mt25q/die-rev-b/mt25q_qlkt_u_01g_bbb_0.pdf

Tested on a i.MX8MP based board:

 # dmesg | grep spi-nor
spi-nor spi0.0: mt25qu01g (131072 Kbytes)

 # cat /proc/mtd
dev:    size   erasesize  name
mtd0: 08000000 00001000 "30bb0000.spi"

~# cat /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/jedec_id
20bb21104400

~# cat /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/manufacturer
st

~# cat /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/partname
mt25qu01g

~# xxd -p  /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp
53464450060101ff00060110300000ff84000102800000ffffffffffffff
ffffffffffffffffffffffffffffffffffffe520fbffffffff3f29eb276b
273b27bbffffffffffff27bbffff29eb0c2010d80f520000244a99008b8e
03e1ac0127387a757a75fbbdd55c4a0f82ff81bd3d36ffffffffffffffff
ffffffffffffffffffe7ffff21dcffff

~# md5sum  /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp
9d28d1b11de8b15ba9152644219d9a78 /sys/devices/platform/soc at 0/30800000.bus/30bb0000.spi/spi_master/spi0/spi0.0/spi-nor/sfdp

Signed-off-by: Fabio Estevam <festevam at denx.de>
[ta: introduce die erase]
Signed-off-by: Tudor Ambarus <tudor.ambarus at linaro.org>
---
 drivers/mtd/spi-nor/micron-st.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
index 8706ef841375..6d8dd6bfbf69 100644
--- a/drivers/mtd/spi-nor/micron-st.c
+++ b/drivers/mtd/spi-nor/micron-st.c
@@ -203,10 +203,24 @@ static int st_nor_four_die_late_init(struct spi_nor *nor)
 	return 0;
 }
 
+static int st_nor_two_die_late_init(struct spi_nor *nor)
+{
+	struct spi_nor_flash_parameter *params = nor->params;
+
+	params->chip_erase_opcode = SPINOR_OP_MT_CHIP_ERASE;
+	params->n_dice = 2;
+
+	return 0;
+}
+
 static struct spi_nor_fixups n25q00_fixups = {
 	.late_init = st_nor_four_die_late_init,
 };
 
+static struct spi_nor_fixups mt25q01_fixups = {
+	.late_init = st_nor_two_die_late_init,
+};
+
 static struct spi_nor_fixups mt25q02_fixups = {
 	.late_init = st_nor_four_die_late_init,
 };
@@ -449,6 +463,11 @@ static const struct flash_info st_nor_parts[] = {
 			 SPI_NOR_BP3_SR_BIT6,
 		.no_sfdp_flags = SECT_4K | SPI_NOR_QUAD_READ,
 		.mfr_flags = USE_FSR,
+	}, {
+		.id = SNOR_ID(0x20, 0xbb, 0x21, 0x10, 0x44, 0x00),
+		.name = "mt25qu01g",
+		.mfr_flags = USE_FSR,
+		.fixups = &mt25q01_fixups,
 	}, {
 		.id = SNOR_ID(0x20, 0xbb, 0x21),
 		.name = "n25q00a",
-- 
2.34.1