[PATCH v2] mtd: davinci-nand: disable subpage write for keystone-nand
From: Santosh Shilimkar <hidden>
Date: 2014-03-20 20:15:52
Also in:
linux-devicetree, lkml
On Thursday 20 March 2014 04:08 PM, Ivan Khoronzhuk wrote:
From: Murali Karicheri <redacted> 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: Brian Norris <computersforpeace@gmail.com> Cc: Warner Losh <redacted> Cc: Santosh Shilimkar <redacted> Signed-off-by: Murali Karicheri <redacted> Signed-off-by: Ivan Khoronzhuk <redacted> ---
Acked-by: Santosh Shilimkar <redacted>
quoted hunk ↗ jump to hunk
This patch is a result of discussion on patch v1: https://lkml.org/lkml/2014/3/20/461 drivers/mtd/nand/davinci_nand.c | 6 ++++++ 1 file changed, 6 insertions(+)diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 4615d79..b922c8e 100644 --- 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);