bcm4908: add pending mtd patches for BCM4908 partitioning

BCM4908 can have multiple firmware partitions. MTD needs to detect which
one is currently used.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 89 insertions, 0 deletions

diff --git a/target/linux/bcm4908/patches-5.4/140-0002-dt-bindings-mtd-add-binding-from-BCM4908-partitions.patch b/target/linux/bcm4908/patches-5.4/140-0002-dt-bindings-mtd-add-binding-from-BCM4908-partitions.patch
new file mode 100644
index 0000000000..4967e6c1e3
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/140-0002-dt-bindings-mtd-add-binding-from-BCM4908-partitions.patch
@@ -0,0 +1,89 @@
+From 4f740351484e88bcea3776578288b6ec400829c8 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Fri, 15 Jan 2021 16:01:04 +0100
+Subject: [PATCH 2/3] dt-bindings: mtd: add binding from BCM4908 partitions
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+BCM4908 uses fixed partitions layout but function of some partitions may
+vary. Some devices use multiple firmware partitions and those should be
+marked to let system discover their purpose.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+ .../partitions/brcm,bcm4908-partitions.yaml   | 68 +++++++++++++++++++
+ 1 file changed, 68 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
+@@ -0,0 +1,68 @@
++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Broadcom BCM4908 partitioning
++
++description: |
++  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
++  for regular booting, the other is treated as fallback.
++
++  This binding allows defining all fixed partitions and marking those containing
++  firmware. System can use that information e.g. for booting or flashing
++  purposes.
++
++maintainers:
++  - Rafał Miłecki <rafal@milecki.pl>
++
++properties:
++  compatible:
++    const: brcm,bcm4908-partitions
++
++  "#address-cells": true
++
++  "#size-cells": true
++
++patternProperties:
++  "@[0-9a-f]+$":
++    allOf:
++      - $ref: "partition.yaml#"
++      - properties:
++          compatible:
++            const: brcm,bcm4908-firmware
++
++required:
++  - "#address-cells"
++  - "#size-cells"
++
++additionalProperties: false
++
++examples:
++  - |
++    partitions {
++        compatible = "brcm,bcm4908-partitions";
++        #address-cells = <1>;
++        #size-cells = <1>;
++
++        partition@0 {
++            label = "cferom";
++            reg = <0x0 0x100000>;
++        };
++
++        partition@100000 {
++            compatible = "brcm,bcm4908-firmware";
++            reg = <0x100000 0xf00000>;
++        };
++
++        partition@1000000 {
++            compatible = "brcm,bcm4908-firmware";
++            reg = <0x1000000 0xf00000>;
++        };
++
++        partition@1f00000 {
++            label = "calibration";
++            reg = <0x1f00000 0x100000>;
++        };
++    };