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 <imp@bsdimp.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index 4615d79fc93f795c869687117744e01653219478..b922c8efcf4012376548c15e4a3af50562d47095 100644 (file)
--- 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);