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-rw-r--r--target/linux/ath79/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch2
-rw-r--r--target/linux/generic/backport-5.10/413-v6.0-mtd-next-mtd-core-introduce-of-support-for-dynamic-partitions.patch106
-rw-r--r--target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch2
-rw-r--r--target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch2
-rw-r--r--target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch2
-rw-r--r--target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch2
-rw-r--r--target/linux/pistachio/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch2
7 files changed, 112 insertions, 6 deletions
diff --git a/target/linux/ath79/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch b/target/linux/ath79/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
index 4677821b83..285b8126f6 100644
--- a/target/linux/ath79/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
+++ b/target/linux/ath79/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
@@ -34,7 +34,7 @@ Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -788,6 +788,17 @@ out_error:
+@@ -849,6 +849,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
diff --git a/target/linux/generic/backport-5.10/413-v6.0-mtd-next-mtd-core-introduce-of-support-for-dynamic-partitions.patch b/target/linux/generic/backport-5.10/413-v6.0-mtd-next-mtd-core-introduce-of-support-for-dynamic-partitions.patch
new file mode 100644
index 0000000000..801d9a13cb
--- /dev/null
+++ b/target/linux/generic/backport-5.10/413-v6.0-mtd-next-mtd-core-introduce-of-support-for-dynamic-partitions.patch
@@ -0,0 +1,106 @@
+From ad9b10d1eaada169bd764abcab58f08538877e26 Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Wed, 22 Jun 2022 03:06:28 +0200
+Subject: mtd: core: introduce of support for dynamic partitions
+
+We have many parser that register mtd partitions at runtime. One example
+is the cmdlinepart or the smem-part parser where the compatible is defined
+in the dts and the partitions gets detected and registered by the
+parser. This is problematic for the NVMEM subsystem that requires an OF
+node to detect NVMEM cells.
+
+To fix this problem, introduce an additional logic that will try to
+assign an OF node to the MTD if declared.
+
+On MTD addition, it will be checked if the MTD has an OF node and if
+not declared will check if a partition with the same label / node name is
+declared in DTS. If an exact match is found, the partition dynamically
+allocated by the parser will have a connected OF node.
+
+The NVMEM subsystem will detect the OF node and register any NVMEM cells
+declared statically in the DTS.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20220622010628.30414-4-ansuelsmth@gmail.com
+---
+ drivers/mtd/mtdcore.c | 61 +++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 61 insertions(+)
+
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -561,6 +561,66 @@ static int mtd_nvmem_add(struct mtd_info
+ return 0;
+ }
+
++static void mtd_check_of_node(struct mtd_info *mtd)
++{
++ struct device_node *partitions, *parent_dn, *mtd_dn = NULL;
++ const char *pname, *prefix = "partition-";
++ int plen, mtd_name_len, offset, prefix_len;
++ struct mtd_info *parent;
++ bool found = false;
++
++ /* Check if MTD already has a device node */
++ if (dev_of_node(&mtd->dev))
++ return;
++
++ /* Check if a partitions node exist */
++ parent = mtd->parent;
++ parent_dn = dev_of_node(&parent->dev);
++ if (!parent_dn)
++ return;
++
++ partitions = of_get_child_by_name(parent_dn, "partitions");
++ if (!partitions)
++ goto exit_parent;
++
++ prefix_len = strlen(prefix);
++ mtd_name_len = strlen(mtd->name);
++
++ /* Search if a partition is defined with the same name */
++ for_each_child_of_node(partitions, mtd_dn) {
++ offset = 0;
++
++ /* Skip partition with no/wrong prefix */
++ if (!of_node_name_prefix(mtd_dn, "partition-"))
++ continue;
++
++ /* Label have priority. Check that first */
++ if (of_property_read_string(mtd_dn, "label", &pname)) {
++ of_property_read_string(mtd_dn, "name", &pname);
++ offset = prefix_len;
++ }
++
++ plen = strlen(pname) - offset;
++ if (plen == mtd_name_len &&
++ !strncmp(mtd->name, pname + offset, plen)) {
++ found = true;
++ break;
++ }
++ }
++
++ if (!found)
++ goto exit_partitions;
++
++ /* Set of_node only for nvmem */
++ if (of_device_is_compatible(mtd_dn, "nvmem-cells"))
++ mtd_set_of_node(mtd, mtd_dn);
++
++exit_partitions:
++ of_node_put(partitions);
++exit_parent:
++ of_node_put(parent_dn);
++}
++
+ /**
+ * add_mtd_device - register an MTD device
+ * @mtd: pointer to new MTD device info structure
+@@ -666,6 +726,7 @@ int add_mtd_device(struct mtd_info *mtd)
+ mtd->dev.devt = MTD_DEVT(i);
+ dev_set_name(&mtd->dev, "mtd%d", i);
+ dev_set_drvdata(&mtd->dev, mtd);
++ mtd_check_of_node(mtd);
+ of_node_get(mtd_get_of_node(mtd));
+ error = device_register(&mtd->dev);
+ if (error)
diff --git a/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch b/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch
index adb8b2ddd8..0e8708e5bb 100644
--- a/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch
+++ b/target/linux/generic/backport-5.10/414-v6.1-mtd-allow-getting-MTD-device-associated-with-a-speci.patch
@@ -25,7 +25,7 @@ Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -1009,6 +1009,34 @@ int __get_mtd_device(struct mtd_info *mt
+@@ -1070,6 +1070,34 @@ int __get_mtd_device(struct mtd_info *mt
EXPORT_SYMBOL_GPL(__get_mtd_device);
/**
diff --git a/target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch b/target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch
index a5dc72f43b..7de27fddb1 100644
--- a/target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch
+++ b/target/linux/generic/hack-5.10/402-mtd-blktrans-call-add-disks-after-mtd-device.patch
@@ -77,7 +77,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
#include "mtdcore.h"
-@@ -861,6 +862,8 @@ int mtd_device_parse_register(struct mtd
+@@ -922,6 +923,8 @@ int mtd_device_parse_register(struct mtd
register_reboot_notifier(&mtd->reboot_notifier);
}
diff --git a/target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch b/target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch
index d34306b7fc..ad68d52c72 100644
--- a/target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch
+++ b/target/linux/generic/hack-5.10/420-mtd-set-rootfs-to-be-root-dev.patch
@@ -20,7 +20,7 @@ Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
-@@ -704,6 +705,19 @@ int add_mtd_device(struct mtd_info *mtd)
+@@ -765,6 +766,19 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
diff --git a/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch b/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch
index 367f2130c4..66017e1648 100644
--- a/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch
+++ b/target/linux/generic/pending-5.10/495-mtd-core-add-get_mtd_device_by_node.patch
@@ -17,7 +17,7 @@ Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -1084,6 +1084,44 @@ out_unlock:
+@@ -1145,6 +1145,44 @@ out_unlock:
}
EXPORT_SYMBOL_GPL(get_mtd_device_nm);
diff --git a/target/linux/pistachio/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch b/target/linux/pistachio/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
index 4677821b83..285b8126f6 100644
--- a/target/linux/pistachio/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
+++ b/target/linux/pistachio/patches-5.10/401-mtd-nor-support-mtd-name-from-device-tree.patch
@@ -34,7 +34,7 @@ Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -788,6 +788,17 @@ out_error:
+@@ -849,6 +849,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{