With SPI flash moving to driver model, commit fbb0991 "dm: Convert
spi_flash_probe() and 'sf probe' to use driver model" ignored the
SST flash-specific write op (byte program & word program), which
actually broke the SST flash from wroking.
This commit makes SST flash work again under driver model, by adding
a new SST flash-specific driver to handle the different write op
from the standard one.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
drivers/mtd/spi/sf_probe.c | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index d19138d..47438d2 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -511,4 +511,35 @@ U_BOOT_DRIVER(spi_flash_std) = {
.ops = &spi_flash_std_ops,
};
+int spi_flash_sst_write(struct udevice *dev, u32 offset, size_t len,
+ const void *buf)
+{
+ struct spi_flash *flash = dev_get_uclass_priv(dev);
+
+ if (flash->spi->op_mode_tx & SPI_OPM_TX_BP)
+ return sst_write_bp(flash, offset, len, buf);
+ else
+ return sst_write_wp(flash, offset, len, buf);
+}
+
+static const struct dm_spi_flash_ops spi_flash_sst_ops = {
+ .read = spi_flash_std_read,
+ .write = spi_flash_sst_write,
+ .erase = spi_flash_std_erase,
+};
+
+static const struct udevice_id spi_flash_sst_ids[] = {
+ { .compatible = "spi-flash-sst" },
+ { }
+};
+
+U_BOOT_DRIVER(spi_flash_sst) = {
+ .name = "spi_flash_sst",
+ .id = UCLASS_SPI_FLASH,
+ .of_match = spi_flash_sst_ids,
+ .probe = spi_flash_std_probe,
+ .priv_auto_alloc_size = sizeof(struct spi_flash),
+ .ops = &spi_flash_sst_ops,
+};
+
#endif /* CONFIG_DM_SPI_FLASH */
--
1.8.2.1
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