Messages in this thread Patch in this message | | | From | William Zhang <> | Subject | [PATCH v4 10/12] mtd: rawnand: brcmnand: Support write protection setting from dts | Date | Fri, 2 Feb 2024 16:28:31 -0800 |
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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>
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Changes in v4: - Use the new brcm,wp-not-connected property based on the dts binding change
Changes in v3: None Changes in v2: None
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index efeee9e80213..8c1489ff7bd6 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -3218,6 +3218,10 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) /* 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) -- 2.37.3
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