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37 lines
1.5 KiB
Diff
37 lines
1.5 KiB
Diff
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From 8e7daa85641c9559c113f6b217bdc923397de77c Mon Sep 17 00:00:00 2001
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From: William Zhang <william.zhang@broadcom.com>
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Date: Thu, 22 Feb 2024 19:47:58 -0800
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Subject: [PATCH] mtd: rawnand: brcmnand: Support write protection setting from
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dts
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The write protection feature is controlled by the module parameter wp_on
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with default set to enabled. But not all the board use this feature
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especially in BCMBCA broadband board. And module parameter is not
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sufficient as different board can have different option. Add a device
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tree property and allow this feature to be configured through the board
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dts on per board basis.
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Signed-off-by: William Zhang <william.zhang@broadcom.com>
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Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
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Reviewed-by: Kamal Dasu <kamal.dasu@broadcom.com>
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Reviewed-by: David Regan <dregan@broadcom.com>
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Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Link: https://lore.kernel.org/linux-mtd/20240223034758.13753-14-william.zhang@broadcom.com
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---
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drivers/mtd/nand/raw/brcmnand/brcmnand.c | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
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+++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
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@@ -3184,6 +3184,10 @@ int brcmnand_probe(struct platform_devic
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/* Disable XOR addressing */
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brcmnand_rmw_reg(ctrl, BRCMNAND_CS_XOR, 0xff, 0, 0);
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+ /* Check if the board connects the WP pin */
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+ if (of_property_read_bool(dn, "brcm,wp-not-connected"))
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+ wp_on = 0;
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+
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if (ctrl->features & BRCMNAND_HAS_WP) {
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/* Permanently disable write protection */
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if (wp_on == 2)
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