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kernel: backport brcmnand support for "brcm,wp-not-connected"

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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>
This commit is contained in:
Rafał Miłecki 2024-03-28 08:41:51 +01:00
parent 2feedab805
commit 6ddc9fc4b5
7 changed files with 114 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
target/linux/bcm47xx/patches-5.15/100-v5.18-mtd-rawnand-brcmnand-Assign-soc-as-early-as-possible.patch
View File

@ -22,7 +22,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
/* Enable the static key if the soc provides I/O operations indicating
* that a non-memory mapped IO access path must be used
@@ -3205,8 +3206,6 @@ int brcmnand_probe(struct platform_devic
@@ -3209,8 +3210,6 @@ int brcmnand_probe(struct platform_devic
* interesting ways
*/
if (soc) {

2
target/linux/bcm47xx/patches-5.15/103-v5.18-mtd-rawnand-brcmnand-Move-OF-operations-out-of-brcmnand_init_cs.patch
View File

@ -43,7 +43,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
nand_set_controller_data(chip, host);
mtd->name = devm_kasprintf(dev, GFP_KERNEL, "brcmnand.%d",
host->cs);
@@ -3236,7 +3229,16 @@ int brcmnand_probe(struct platform_devic
@@ -3240,7 +3233,16 @@ int brcmnand_probe(struct platform_devic
host->pdev = pdev;
host->ctrl = ctrl;

2
target/linux/bcm47xx/patches-5.15/104-v5.18-mtd-rawnand-brcmnand-Allow-working-without-interrupts.patch
View File

@ -32,7 +32,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
/* switch to interrupt polling and PIO mode */
disable_ctrl_irqs(ctrl);
sts = bcmnand_ctrl_poll_status(ctrl, NAND_CTRL_RDY,
@@ -3187,33 +3187,29 @@ int brcmnand_probe(struct platform_devic
@@ -3191,33 +3191,29 @@ int brcmnand_probe(struct platform_devic
}
/* IRQ */

6
target/linux/bcm47xx/patches-5.15/106-v5.18-mtd-rawnand-brcmnand-Allow-platform-data-instantation.patch
View File

@ -72,7 +72,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
return PTR_ERR(ctrl->nand_base);
/* Enable clock before using NAND registers */
@@ -3214,7 +3214,6 @@ int brcmnand_probe(struct platform_devic
@@ -3218,7 +3218,6 @@ int brcmnand_probe(struct platform_devic
for_each_available_child_of_node(dn, child) {
if (of_device_is_compatible(child, "brcm,nandcs")) {
@ -80,7 +80,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
if (!host) {
@@ -3234,7 +3233,7 @@ int brcmnand_probe(struct platform_devic
@@ -3238,7 +3237,7 @@ int brcmnand_probe(struct platform_devic
nand_set_flash_node(&host->chip, child);
@ -89,7 +89,7 @@ Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
if (ret) {
devm_kfree(dev, host);
continue; /* Try all chip-selects */
@@ -3244,6 +3243,32 @@ int brcmnand_probe(struct platform_devic
@@ -3248,6 +3247,32 @@ int brcmnand_probe(struct platform_devic
}
}

36
target/linux/generic/backport-5.15/411-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch Normal file
View File

@ -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)

36
target/linux/generic/backport-6.1/400-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch Normal file
View File

@ -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
@@ -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)

36
target/linux/generic/backport-6.6/400-v6.9-mtd-rawnand-brcmnand-Support-write-protection-settin.patch Normal file
View File

@ -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
@@ -3189,6 +3189,10 @@ 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)