diff options
| author | Rafał Miłecki <rafal@milecki.pl> | 2024-03-28 08:41:51 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2024-03-28 08:52:23 +0100 |
| commit | 6ddc9fc4b55345ad6cdfca7542a4987433e7f35d (patch) | |
| tree | f623a91e26b5e75626483209faae2e355c7d8758 /target/linux/generic/backport-5.15 | |
| parent | 2feedab8054766010c12d129ed5650bbd57ea2ee (diff) | |
kernel: backport brcmnand support for "brcm,wp-not-connected"
It's required to support NAND controllers with WP pin on boards that
don't have it connected to NAND chip.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Diffstat (limited to 'target/linux/generic/backport-5.15')
| -rw-r--r-- | target/linux/generic/backport-5.15/411-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/411-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch b/target/linux/generic/backport-5.15/411-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch new file mode 100644 index 0000000000..dce2c91fd3 --- /dev/null +++ b/target/linux/generic/backport-5.15/411-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch @@ -0,0 +1,36 @@ +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 +@@ -3184,6 +3184,10 @@ 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) |