openwrt/target/linux/gemini/patches-4.19/0009-mtd-partitions-Add-RedBoot-FIS-DT-bindings.patch

From 3dfe7ff875a64b83de21dad6365225f41f3cdb17 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Fri, 19 Oct 2018 08:22:18 +0200
Subject: [PATCH 09/18] mtd: partitions: Add RedBoot FIS DT bindings

This adds device tree bindings for the RedBoot FIS partition
format.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 .../bindings/mtd/partitions/redboot-fis.txt   | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt

--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt
@@ -0,0 +1,27 @@
+RedBoot FLASH Image System (FIS) Partitions
+===========================================
+
+The FLASH Image System (FIS) directory is a flash description
+format closely associated with the RedBoot boot loader.
+
+It uses one single flash eraseblock in the flash to store an index of
+all images in the flash.
+
+This block size will vary depending on flash but is typically
+32 KB in size.
+
+Required properties:
+- compatible : (required) must be "redboot-fis"
+- fis-index-block : (required) a index to the eraseblock containing
+  the FIS directory on this device. On a flash memory with 32KB
+  eraseblocks, 0 means the first eraseblock at 0x00000000, 1 means the
+  second eraseblock at 0x00008000 and so on.
+
+Example:
+
+flash@0 {
+	partitions {
+		compatible = "redboot-fis";
+		fis-index-block = <0>;
+	};
+};