[PATCH 2/2] mtd: rawnand: brcmnand: support "no-wp" DT property

[Rafał Miłecki]

From: Rafał Miłecki <rafal at milecki.pl>

Some boards may use WP-capable controller but still have WP not
connected. This change fixes:
[    1.175550] bcm63138_nand ff801800.nand: timeout on status poll (expected c0000040 got c00000c0)
[    1.184524] bcm63138_nand ff801800.nand: nand #WP expected on
[    1.285547] bcm63138_nand ff801800.nand: timeout on status poll (expected c0000040 got c00000c0)
[    1.294516] bcm63138_nand ff801800.nand: nand #WP expected on
[    1.395548] bcm63138_nand ff801800.nand: timeout on status poll (expected c0000040 got c00000c0)
[    1.404517] bcm63138_nand ff801800.nand: nand #WP expected on

Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 drivers/mtd/nand/raw/brcmnand/brcmnand.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index f75929783b94..8b6167457f0c 100644
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -714,7 +714,8 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
 	if (ctrl->nand_version >= 0x0500)
 		ctrl->features |= BRCMNAND_HAS_1K_SECTORS;
 
-	if (ctrl->nand_version >= 0x0700)
+	if (ctrl->nand_version >= 0x0700 &&
+	    !of_property_read_bool(ctrl->dev->of_node, "no-wp"))
 		ctrl->features |= BRCMNAND_HAS_WP;
 	else if (of_property_read_bool(ctrl->dev->of_node, "brcm,nand-has-wp"))
 		ctrl->features |= BRCMNAND_HAS_WP;
-- 
2.31.1