[PATCH AUTOSEL for 4.15 037/102] mtd: nand: ifc: update bufnum mask for ver >= 2.0.0

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Jagdish Gediya <jagdish.gediya@xxxxxxx>

[ Upstream commit bccb06c353af3764ca86d9da47652458e6c2eb41 ]

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 <jagdish.gediya@xxxxxxx>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@xxxxxxx>
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/mtd/nand/fsl_ifc_nand.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 9e03bac7f34c..bbdd68a54d68 100644
--- 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;
 }
 
-- 
2.14.1




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]