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 <[email protected]>

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

@@ -22,7 +22,7 @@ Signed-off-by: Florian Fainelli <[email protected]>
  
  	/* 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) {

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

@@ -43,7 +43,7 @@ Signed-off-by: Florian Fainelli <[email protected]>
  	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;
  

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

@@ -32,7 +32,7 @@ Signed-off-by: Florian Fainelli <[email protected]>
  		/* 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 */

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

@@ -72,7 +72,7 @@ Signed-off-by: Florian Fainelli <[email protected]>
  		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 <[email protected]>
  
  			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 <[email protected]>
  			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
  		}
  	}
  

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 <[email protected]>
+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 <[email protected]>
+Reviewed-by: Florian Fainelli <[email protected]>
+Reviewed-by: Kamal Dasu <[email protected]>
+Reviewed-by: David Regan <[email protected]>
+Signed-off-by: Miquel Raynal <[email protected]>
+Link: https://lore.kernel.org/linux-mtd/[email protected]
+---
+ 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)

target/linux/generic/backport-6.1/400-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 <[email protected]>
+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 <[email protected]>
+Reviewed-by: Florian Fainelli <[email protected]>
+Reviewed-by: Kamal Dasu <[email protected]>
+Reviewed-by: David Regan <[email protected]>
+Signed-off-by: Miquel Raynal <[email protected]>
+Link: https://lore.kernel.org/linux-mtd/[email protected]
+---
+ 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)

target/linux/generic/backport-6.6/400-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 <[email protected]>
+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 <[email protected]>
+Reviewed-by: Florian Fainelli <[email protected]>
+Reviewed-by: Kamal Dasu <[email protected]>
+Reviewed-by: David Regan <[email protected]>
+Signed-off-by: Miquel Raynal <[email protected]>
+Link: https://lore.kernel.org/linux-mtd/[email protected]
+---
+ 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)