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 <david@protonic.nl>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

diff --git a/drivers/mtd/devices/mchp48l640.c b/drivers/mtd/devices/mchp48l640.c
index 4cdd24aaed416fc7e40a8060b5c7eaf6684fc6d5..7584d0ba93969d79ba3d9c7a97bc63bd0e5ef327 100644 (file)
--- a/drivers/mtd/devices/mchp48l640.c
+++ b/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);