mtd: davinci-nand: disable subpage write for keystone-nand

Sub page write doesn't work because of hw issue in controller found on Keystone SOCs. AEMIF controller is also used on DaVinci SOCs which don't seems to have any issue. So add "ti,keysone-nand" compatible to nand driver in order to set NAND_NO_SUBPAGE_WRITE option. Cc: Warner Losh <[email protected]> Signed-off-by: Murali Karicheri <[email protected]> Signed-off-by: Ivan Khoronzhuk <[email protected]> Acked-by: Santosh Shilimkar <[email protected]> Signed-off-by: Brian Norris <[email protected]>
0day-ci · Apr 30, 2014 · 28c015a · 28c015a
1 parent c9eaa44
commit 28c015a
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
@@ -523,6 +523,7 @@ static struct nand_ecclayout hwecc4_2048 = {
 #if defined(CONFIG_OF)
 static const struct of_device_id davinci_nand_of_match[] = {
 	{.compatible = "ti,davinci-nand", },
+	{.compatible = "ti,keystone-nand", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, davinci_nand_of_match);
@@ -581,6 +582,11 @@ static struct davinci_nand_pdata
 		    of_property_read_bool(pdev->dev.of_node,
 			"ti,davinci-nand-use-bbt"))
 			pdata->bbt_options = NAND_BBT_USE_FLASH;
+
+		if (of_device_is_compatible(pdev->dev.of_node,
+					    "ti,keystone-nand")) {
+			pdata->options |= NAND_NO_SUBPAGE_WRITE;
+		}
 	}
 
 	return dev_get_platdata(&pdev->dev);