mtd: mchp48l640: add support for Fujitsu MB85RS128TY FRAM

The Fujitsu FRAM chips use the same command set as Microchip EERAM.
The only differences are that the Fujitsu FRAM chips don't really have a
page size limit, nor do they automatically reset the WEL bit.

Signed-off-by: David Jander <[email protected]>
Reviewed-by: Heiko Schocher <[email protected]>
Signed-off-by: Jonas Rebmann <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>

Author: yope

drivers/mtd/devices/mchp48l640.c

@@ -303,6 +303,12 @@ static const struct mchp48_caps mchp48l640_caps = {
 	.auto_disable_wel = true,
 };
 
+static const struct mchp48_caps mb85rs128ty_caps = {
+	.size = SZ_16K,
+	.page_size = 256,
+	.auto_disable_wel = false,
+};
+
 static int mchp48l640_probe(struct spi_device *spi)
 {
 	struct mchp48l640_flash *flash;
@@ -361,6 +367,10 @@ static const struct of_device_id mchp48l640_of_table[] = {
 		.compatible = "microchip,48l640",
 		.data = &mchp48l640_caps,
 	},
+	{
+		.compatible = "fujitsu,mb85rs128ty",
+		.data = &mb85rs128ty_caps,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, mchp48l640_of_table);
@@ -370,6 +380,10 @@ static const struct spi_device_id mchp48l640_spi_ids[] = {
 		.name = "48l640",
 		.driver_data = (kernel_ulong_t)&mchp48l640_caps,
 	},
+	{
+		.name = "mb85rs128ty",
+		.driver_data = (kernel_ulong_t)&mb85rs128ty_caps,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(spi, mchp48l640_spi_ids);