mtd: nand: ifc: update bufnum mask for ver >= 2.0.0

Bufnum mask is used to calculate page position in the internal SRAM. As IFC version 2.0.0 has 16KB of internal SRAM as compared to older versions which had 8KB. Hence bufnum mask needs to be updated. Signed-off-by: Jagdish Gediya <[email protected]> Signed-off-by: Prabhakar Kushwaha <[email protected]> Signed-off-by: Boris Brezillon <[email protected]>
torvalds · Nov 30, 2017 · bccb06c · bccb06c
1 parent d822401
commit bccb06c
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -916,6 +916,13 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv)
 	if (ctrl->version >= FSL_IFC_VERSION_1_1_0)
 		fsl_ifc_sram_init(priv);
 
+	/*
+	 * As IFC version 2.0.0 has 16KB of internal SRAM as compared to older
+	 * versions which had 8KB. Hence bufnum mask needs to be updated.
+	 */
+	if (ctrl->version >= FSL_IFC_VERSION_2_0_0)
+		priv->bufnum_mask = (priv->bufnum_mask * 2) + 1;
+
 	return 0;
 }