--- /dev/null
+From 2d751203aacf86a1b301a188d8551c7da91043ab Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Tue, 2 Mar 2021 20:00:12 +0100
+Subject: [PATCH] mtd: parsers: ofpart: limit parsing of deprecated DT syntax
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+For backward compatibility ofpart still supports the old syntax like:
+spi-flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0x0>;
+
+ partition@0 {
+ label = "bootloader";
+ reg = <0x0 0x100000>;
+ };
+};
+(without "partitions" subnode).
+
+There is no reason however to support nested partitions without a clear
+"compatible" string like:
+partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "bootloader";
+ reg = <0x0 0x100000>;
+
+ partition@0 {
+ label = "config";
+ reg = <0x80000 0x80000>;
+ };
+ };
+};
+(we never officially supported or documented that).
+
+Make sure ofpart doesn't attempt to parse above.
+
+Cc: Ansuel Smith <ansuelsmth@gmail.com>
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20210302190012.1255-1-zajec5@gmail.com
+---
+ drivers/mtd/parsers/ofpart_core.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/mtd/parsers/ofpart_core.c
++++ b/drivers/mtd/parsers/ofpart_core.c
+@@ -53,7 +53,7 @@ static int parse_fixed_partitions(struct
+ return 0;
+
+ ofpart_node = of_get_child_by_name(mtd_node, "partitions");
+- if (!ofpart_node) {
++ if (!ofpart_node && !mtd_is_partition(master)) {
+ /*
+ * We might get here even when ofpart isn't used at all (e.g.,
+ * when using another parser), so don't be louder than
+@@ -64,6 +64,8 @@ static int parse_fixed_partitions(struct
+ ofpart_node = mtd_node;
+ dedicated = false;
+ }
++ if (!ofpart_node)
++ return 0;
+
+ of_id = of_match_node(parse_ofpart_match_table, ofpart_node);
+ if (dedicated && !of_id) {
--- /dev/null
+From a5d83d6e2bc747b13f347962d4b335d70b23559b Mon Sep 17 00:00:00 2001
+From: Ansuel Smith <ansuelsmth@gmail.com>
+Date: Fri, 12 Mar 2021 07:28:19 +0100
+Subject: [PATCH] mtd: core: add nvmem-cells compatible to parse mtd as nvmem
+ cells
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Partitions that contains the nvmem-cells compatible will register
+their direct subonodes as nvmem cells and the node will be treated as a
+nvmem provider.
+
+Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
+Tested-by: Rafał Miłecki <rafal@milecki.pl>
+---
+ drivers/mtd/mtdcore.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -559,6 +559,7 @@ static int mtd_nvmem_reg_read(void *priv
+
+ static int mtd_nvmem_add(struct mtd_info *mtd)
+ {
++ struct device_node *node = mtd_get_of_node(mtd);
+ struct nvmem_config config = {};
+
+ config.id = -1;
+@@ -571,7 +572,7 @@ static int mtd_nvmem_add(struct mtd_info
+ config.stride = 1;
+ config.read_only = true;
+ config.root_only = true;
+- config.no_of_node = true;
++ config.no_of_node = !of_device_is_compatible(node, "nvmem-cells");
+ config.priv = mtd;
+
+ mtd->nvmem = nvmem_register(&config);
--- /dev/null
+From 42645976c3289b03a12f1bd2bc131fd98fc27170 Mon Sep 17 00:00:00 2001
+From: Ansuel Smith <ansuelsmth@gmail.com>
+Date: Fri, 12 Mar 2021 07:28:20 +0100
+Subject: [PATCH] devicetree: nvmem: nvmem: drop $nodename restriction
+
+Drop $nodename restriction as now mtd partition can also be used as
+nvmem provider.
+
+Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
+---
+ Documentation/devicetree/bindings/nvmem/nvmem.yaml | 3 ---
+ 1 file changed, 3 deletions(-)
+
+--- a/Documentation/devicetree/bindings/nvmem/nvmem.yaml
++++ b/Documentation/devicetree/bindings/nvmem/nvmem.yaml
+@@ -20,9 +20,6 @@ description: |
+ storage device.
+
+ properties:
+- $nodename:
+- pattern: "^(eeprom|efuse|nvram)(@.*|-[0-9a-f])*$"
+-
+ "#address-cells":
+ const: 1
+
--- /dev/null
+From 377aa0135dc8489312edd3184d143ce3a89ff7ee Mon Sep 17 00:00:00 2001
+From: Ansuel Smith <ansuelsmth@gmail.com>
+Date: Fri, 12 Mar 2021 07:28:21 +0100
+Subject: [PATCH] dt-bindings: mtd: Document use of nvmem-cells compatible
+
+Document nvmem-cells compatible used to treat mtd partitions as a
+nvmem provider.
+
+Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
+Reviewed-by: Rob Herring <robh@kernel.org>
+---
+ .../bindings/mtd/partitions/nvmem-cells.yaml | 99 +++++++++++++++++++
+ 1 file changed, 99 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
+@@ -0,0 +1,99 @@
++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/mtd/partitions/nvmem-cells.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Nvmem cells
++
++description: |
++ Any partition containing the compatible "nvmem-cells" will register as a
++ nvmem provider.
++ Each direct subnodes represents a nvmem cell following the nvmem binding.
++ Nvmem binding to declare nvmem-cells can be found in:
++ Documentation/devicetree/bindings/nvmem/nvmem.yaml
++
++maintainers:
++ - Ansuel Smith <ansuelsmth@gmail.com>
++
++allOf:
++ - $ref: /schemas/nvmem/nvmem.yaml#
++
++properties:
++ compatible:
++ const: nvmem-cells
++
++required:
++ - compatible
++
++additionalProperties: true
++
++examples:
++ - |
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ /* ... */
++
++ };
++ art: art@1200000 {
++ compatible = "nvmem-cells";
++ reg = <0x1200000 0x0140000>;
++ label = "art";
++ read-only;
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ macaddr_gmac1: macaddr_gmac1@0 {
++ reg = <0x0 0x6>;
++ };
++
++ macaddr_gmac2: macaddr_gmac2@6 {
++ reg = <0x6 0x6>;
++ };
++
++ pre_cal_24g: pre_cal_24g@1000 {
++ reg = <0x1000 0x2f20>;
++ };
++
++ pre_cal_5g: pre_cal_5g@5000{
++ reg = <0x5000 0x2f20>;
++ };
++ };
++ - |
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ partition@0 {
++ label = "bootloader";
++ reg = <0x000000 0x100000>;
++ read-only;
++ };
++
++ firmware@100000 {
++ compatible = "brcm,trx";
++ label = "firmware";
++ reg = <0x100000 0xe00000>;
++ };
++
++ calibration@f00000 {
++ compatible = "nvmem-cells";
++ label = "calibration";
++ reg = <0xf00000 0x100000>;
++ ranges = <0 0xf00000 0x100000>;
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ wifi0@0 {
++ reg = <0x000000 0x080000>;
++ };
++
++ wifi1@80000 {
++ reg = <0x080000 0x080000>;
++ };
++ };
++ };
#include <linux/nvmem-provider.h>
#include <linux/mtd/mtd.h>
-@@ -698,6 +699,15 @@ int add_mtd_device(struct mtd_info *mtd)
+@@ -699,6 +700,15 @@ int add_mtd_device(struct mtd_info *mtd)
of this try_ nonsense, and no bitching about it
either. :) */
__module_get(THIS_MODULE);
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -1049,6 +1049,44 @@ out_unlock:
+@@ -1050,6 +1050,44 @@ out_unlock:
}
EXPORT_SYMBOL_GPL(get_mtd_device_nm);
const char *partname;
struct device_node *pp;
int nr_parts, i, ret = 0;
-@@ -124,9 +127,15 @@ static int parse_fixed_partitions(struct
+@@ -126,9 +129,15 @@ static int parse_fixed_partitions(struct
parts[i].size = of_read_number(reg + a_cells, s_cells);
parts[i].of_node = pp;
parts[i].name = partname;
if (of_get_property(pp, "read-only", &len))
-@@ -239,6 +248,18 @@ static int __init ofpart_parser_init(voi
+@@ -241,6 +250,18 @@ static int __init ofpart_parser_init(voi
return 0;
}
/* Pull of_node from the master device node */
mtd_node = mtd_get_of_node(master);
-@@ -86,7 +120,9 @@ static int parse_fixed_partitions(struct
+@@ -88,7 +122,9 @@ static int parse_fixed_partitions(struct
return 0;
parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL);
return -ENOMEM;
i = 0;
-@@ -135,6 +171,11 @@ static int parse_fixed_partitions(struct
+@@ -137,6 +173,11 @@ static int parse_fixed_partitions(struct
if (of_get_property(pp, "lock", &len))
parts[i].mask_flags |= MTD_POWERUP_LOCK;
i++;
}
-@@ -144,6 +185,11 @@ static int parse_fixed_partitions(struct
+@@ -146,6 +187,11 @@ static int parse_fixed_partitions(struct
if (quirks && quirks->post_parse)
quirks->post_parse(master, parts, nr_parts);
*pparts = parts;
return nr_parts;
-@@ -154,6 +200,7 @@ ofpart_fail:
+@@ -156,6 +202,7 @@ ofpart_fail:
ofpart_none:
of_node_put(pp);
kfree(parts);
struct device_node *pp;
int nr_parts, i, ret = 0;
bool dedicated = true;
-@@ -124,9 +127,13 @@ static int parse_fixed_partitions(struct
+@@ -126,9 +129,13 @@ static int parse_fixed_partitions(struct
parts[i].size = of_read_number(reg + a_cells, s_cells);
parts[i].of_node = pp;
parts[i].name = partname;
if (of_get_property(pp, "read-only", &len))
-@@ -239,6 +246,18 @@ static int __init ofpart_parser_init(voi
+@@ -241,6 +248,18 @@ static int __init ofpart_parser_init(voi
return 0;
}
mtd->type = MTD_NORFLASH;
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
-@@ -778,6 +778,17 @@ out_error:
+@@ -779,6 +779,17 @@ out_error:
*/
static void mtd_set_dev_defaults(struct mtd_info *mtd)
{
projects / openwrt / staging / hauke.git / commitdiff