From: Tien Fong Chee tien.fong.chee@intel.com
Add a document to describe file system firmware loader binding information.
Signed-off-by: Tien Fong Chee tien.fong.chee@intel.com --- doc/device-tree-bindings/chosen.txt | 22 ++++++++++++ doc/device-tree-bindings/misc/fs_loader.txt | 52 +++++++++++++++++++++++++++++ 2 files changed, 74 insertions(+) create mode 100644 doc/device-tree-bindings/misc/fs_loader.txt
diff --git a/doc/device-tree-bindings/chosen.txt b/doc/device-tree-bindings/chosen.txt index c96b8f7..738673c 100644 --- a/doc/device-tree-bindings/chosen.txt +++ b/doc/device-tree-bindings/chosen.txt @@ -73,3 +73,25 @@ Example u-boot,spl-boot-order = "same-as-spl", &sdmmc, "/sdhci@fe330000"; }; }; + +firmware-loader property +------------------------ +Multiple file system firmware loader nodes could be defined in device trees for +multiple storage type and their default partition, then a property +"firmware-loader" can be used to pass default firmware loader +node(default storage type) to the firmware loader driver. + +Example +------- +/ { + chosen { + firmware-loader = &fs_loader0; + }; + + fs_loader0: fs_loader@0 { + u-boot,dm-pre-reloc; + compatible = "fs_loader"; + storage_device = "mmc"; + devpart = "0:1"; + }; +}; diff --git a/doc/device-tree-bindings/misc/fs_loader.txt b/doc/device-tree-bindings/misc/fs_loader.txt new file mode 100644 index 0000000..78bea66 --- /dev/null +++ b/doc/device-tree-bindings/misc/fs_loader.txt @@ -0,0 +1,52 @@ +* File system firmware loader + +Required properties: +-------------------- + +- compatible: should contain "fs_loader" +- storage_device: which storage device loading from, could be: + - mmc, usb, sata, and ubi. +- devpart: which storage device and partition the image loading from, + this property is required for mmc, usb and sata. +- mdtpart: which partition of ubi the image loading from, this property is + required for ubi. +- ubivol: which volume of ubi the image loading from, this proprety is required + for ubi. + +Example of storage device and partition search set for mmc, usb, sata and +ubi in device tree source as shown in below: + + Example of storage type and device partition search set for mmc, usb, + sata and ubi as shown in below: + Example for mmc: + fs_loader0: fs_loader@0 { + u-boot,dm-pre-reloc; + compatible = "fs_loader"; + storage_device = "mmc"; + devpart = "0:1"; + }; + + Example for usb: + fs_loader1: fs_loader@1 { + u-boot,dm-pre-reloc; + compatible = "fs_loader"; + storage_device = "usb"; + devpart = "0:1"; + }; + + Example for sata: + fs_loader2: fs_loader@2 { + u-boot,dm-pre-reloc; + compatible = "fs_loader"; + storage_device = "sata"; + devpart = "0:1"; + }; + + Example for ubi: + fs_loader3: fs_loader@3 { + u-boot,dm-pre-reloc; + compatible = "fs_loader"; + storage_device = "ubi"; + mtdpart = "UBI", + ubivol = "ubi0"; + };