mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
37 lines
1.5 KiB
Diff
37 lines
1.5 KiB
Diff
|
From 8e7daa85641c9559c113f6b217bdc923397de77c Mon Sep 17 00:00:00 2001
|
||
|
|
From: William Zhang <william.zhang@broadcom.com>
|
||
|
|
Date: Thu, 22 Feb 2024 19:47:58 -0800
|
||
|
|
Subject: [PATCH] mtd: rawnand: brcmnand: Support write protection setting from
|
||
|
|
dts
|
||
|
|
|
||
|
|
The write protection feature is controlled by the module parameter wp_on
|
||
|
|
with default set to enabled. But not all the board use this feature
|
||
|
|
especially in BCMBCA broadband board. And module parameter is not
|
||
|
|
sufficient as different board can have different option. Add a device
|
||
|
|
tree property and allow this feature to be configured through the board
|
||
|
|
dts on per board basis.
|
||
|
|
|
||
|
|
Signed-off-by: William Zhang <william.zhang@broadcom.com>
|
||
|
|
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
|
||
|
|
Reviewed-by: Kamal Dasu <kamal.dasu@broadcom.com>
|
||
|
|
Reviewed-by: David Regan <dregan@broadcom.com>
|
||
|
|
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
|
||
|
|
Link: https://lore.kernel.org/linux-mtd/20240223034758.13753-14-william.zhang@broadcom.com
|
||
|
|
---
|
||
|
|
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 4 ++++
|
||
|
|
1 file changed, 4 insertions(+)
|
||
|
|
|
||
|
|
--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
|
||
|
|
+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
|
||
|
|
@@ -3188,6 +3188,10 @@ int brcmnand_probe(struct platform_devic
|
||
|
|
/* Disable XOR addressing */
|
||
|
|
brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
|
||
|
|
|
||
|
|
+ /* Check if the board connects the WP pin */
|
||
|
|
+ if (of_property_read_bool(dn, "brcm,wp-not-connected"))
|
||
|
|
+ wp_on = 0;
|
||
|
|
+
|
||
|
|
if (ctrl->features & BRCMNAND_HAS_WP) {
|
||
|
|
/* Permanently disable write protection */
|
||
|
|
if (wp_on == 2)
|