From 3a0e9b49e7f167e1bec2257b44e4f0ca91497cc6 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Thu, 17 Dec 2015 00:52:49 +0000 Subject: environment: Support env from file in a file-system via device tree Current barebox,environment node only allows specifying a raw device or partition to load an environment from. Some boards, like OMAP and SoCFPGA, instead want to use a file located in a FAT filesystem. Extend the device tree bindings with a new property 'file-path' that will trigger this behavior. This allows any board using this driver to get the env from a file or from a raw device, instead of each machine type being either raw device only or file only. Signed-off-by: Trent Piepho Signed-off-by: Sascha Hauer --- .../devicetree/bindings/barebox/barebox,environment.rst | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/barebox/barebox,environment.rst b/Documentation/devicetree/bindings/barebox/barebox,environment.rst index d5e52ead04..12b103be10 100644 --- a/Documentation/devicetree/bindings/barebox/barebox,environment.rst +++ b/Documentation/devicetree/bindings/barebox/barebox,environment.rst @@ -6,7 +6,10 @@ This driver provides an environment for barebox from the devicetree. Required properties: * ``compatible``: should be ``barebox,environment`` -* ``device-path``: path to the environment +* ``device-path``: path to the device environment is on + +Optional properties: +* ``file-path``: path to a file in the device named by device-path The device-path is a multistring property. The first string should contain a nodepath to the node containing the physical device of the environment or @@ -19,9 +22,19 @@ the path to the environment. Supported values for : be the label for MTD partitions, the number for DOS partitions (beginning with 0) or the name for GPT partitions. +The file-path is the name of a file located in a FAT filesystem on the +device named in device-path. This filesystem will be mounted and the +environment loaded from the file's location in the directory tree. + Example:: environment@0 { compatible = "barebox,environment"; device-path = &flash, "partname:barebox-environment"; }; + + environment@1 { + compatible = "barebox,environment"; + device-path = &mmc, "partname:1"; + file-path = "barebox.env"; + }; -- cgit v1.2.3