drivers: nand: brcmnand: add an option to read the write-protect from device tree

The option write-protect may only change on the kernel command line,
we add a property in the device tree to be more flexible.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
index e333320..faa6da4 100644 (file)
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
@@ -2671,6 +2671,9 @@ int brcmnand_probe(struct udevice *dev, struct brcmnand_soc *soc)
        /* Disable XOR addressing */
        brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
 
+       /* Read the write-protect configuration in the device tree */
+       wp_on = dev_read_u32_default(dev, "write-protect", wp_on);
+
        if (ctrl->features & BRCMNAND_HAS_WP) {
                /* Permanently disable write protection */
                if (wp_on == 2)