1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0445-dt-bindings-nvmem-Add-bindings-for-rmem-driver.patch b/target/linux/bcm27xx/patches-5.10/950-0445-dt-bindings-nvmem-Add-bindings-for-rmem-driver.patch
new file mode 100644
index 0000000000..6c3c3e31a9
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0445-dt-bindings-nvmem-Add-bindings-for-rmem-driver.patch
@@ -0,0 +1,75 @@
+From 15cfca011ac1e08e073628b36f40d64f03fcf2b2 Mon Sep 17 00:00:00 2001
+From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Date: Thu, 10 Dec 2020 19:22:45 +0100
+Subject: [PATCH] dt-bindings: nvmem: Add bindings for rmem driver
+
+Firmware/co-processors might use reserved memory areas in order to pass
+data stemming from an nvmem device otherwise non accessible to Linux.
+For example an EEPROM memory only physically accessible to firmware, or
+data only accessible early at boot time.
+
+Introduce the dt-bindings to nvmem's rmem.
+
+Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+
+---
+
+Changes since v1:
+ - Update schema to new driver design
+---
+ .../devicetree/bindings/nvmem/rmem.yaml       | 49 +++++++++++++++++++
+ 1 file changed, 49 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/nvmem/rmem.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/nvmem/rmem.yaml
+@@ -0,0 +1,49 @@
++# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/nvmem/rmem.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Reserved Memory Based nvmem Device
++
++maintainers:
++  - Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
++
++allOf:
++  - $ref: "nvmem.yaml#"
++
++properties:
++  compatible:
++    items:
++      - enum:
++        - raspberrypi,bootloader-config
++      - const: nvmem-rmem
++
++  no-map:
++    $ref: /schemas/types.yaml#/definitions/flag
++    description:
++      Avoid creating a virtual mapping of the region as part of the OS'
++      standard mapping of system memory.
++
++required:
++  - compatible
++  - no-map
++
++unevaluatedProperties: false
++
++examples:
++  - |
++        reserved-memory {
++                #address-cells = <1>;
++                #size-cells = <1>;
++
++                blconfig: nvram@10000000 {
++                        compatible = "raspberrypi,bootloader-config", "nvmem-rmem";
++                        #address-cells = <1>;
++                        #size-cells = <1>;
++                        reg = <0x10000000 0x1000>;
++                        no-map;
++                };
++        };
++
++...