[PATCH] mtd: spinand: Add support for GigaDevice GD5F1GQ4UC

Stefan Roese
2019-01-22T14:56:50Z

Add support for GigaDevice GD5F1GQ4UC SPI NAND chip.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Chuanhong Guo <gch981213@gmail.com>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
---
Frankly, I'm a bit unsure, if these new ooblayout_foo functions are
needed for this device. I was unable to find a datasheet for the
already supported devices (GD5F1G/2G/4GQ4xA), so I couldn't compare
the OOB area values here with the ones for my SPI NAND chip.

I'm also not 100% sure, if I should use NAND_ECCREQ(8, 2048) or
NAND_ECCREQ(8, 512) for this device.

So comments welcome.

Thanks,
Stefan

drivers/mtd/nand/spi/gigadevice.c | 39 +++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)

diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
index e4141c20947a..a9d256fa2577 100644
--- a/drivers/mtd/nand/spi/gigadevice.c
+++ b/drivers/mtd/nand/spi/gigadevice.c
@@ -57,6 +57,31 @@ static int gd5fxgq4xa_ooblayout_free(struct mtd_info *mtd, int section,
return 0;
}

+static int gd5f1gq4u_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *region)
+{
+ if (section)
+ return -ERANGE;
+
+ region->offset = 64;
+ region->length = 64;
+
+ return 0;
+}
+
+static int gd5f1gq4u_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *region)
+{
+ if (section)
+ return -ERANGE;
+
+ /* Reserve 2 bytes for the BBM. */
+ region->offset = 2;
+ region->length = 62;
+
+ return 0;
+}
+
static int gd5fxgq4xa_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
@@ -86,6 +111,11 @@ static const struct mtd_ooblayout_ops gd5fxgq4xa_ooblayout = {
.free = gd5fxgq4xa_ooblayout_free,
};

+static const struct mtd_ooblayout_ops gd5f1gq4u_ooblayout = {
+ .ecc = gd5f1gq4u_ooblayout_ecc,
+ .free = gd5f1gq4u_ooblayout_free,
+};
+
static const struct spinand_info gigadevice_spinand_table[] = {
SPINAND_INFO("GD5F1GQ4xA", 0xF1,
NAND_MEMORG(1, 2048, 64, 64, 1024, 1, 1, 1),
@@ -114,6 +144,15 @@ static const struct spinand_info gigadevice_spinand_table[] = {
0,
SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
gd5fxgq4xa_ecc_get_status)),
+ SPINAND_INFO("GD5F1GQ4UC", 0xd1,
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
+ NAND_ECCREQ(8, 2048),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ 0,
+ SPINAND_ECCINFO(&gd5f1gq4u_ooblayout,
+ gd5fxgq4xa_ecc_get_status)),
};

static int gigadevice_spinand_detect(struct spinand_device *spinand)
--
2.20.1