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Diffstat (limited to 'Documentation/devicetree/bindings/nvmem/nvmem.txt')
-rw-r--r-- | Documentation/devicetree/bindings/nvmem/nvmem.txt | 81 |
1 files changed, 1 insertions, 80 deletions
diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.txt b/Documentation/devicetree/bindings/nvmem/nvmem.txt index fd06c09b822b..46a7ef485e24 100644 --- a/Documentation/devicetree/bindings/nvmem/nvmem.txt +++ b/Documentation/devicetree/bindings/nvmem/nvmem.txt @@ -1,80 +1 @@ -= NVMEM(Non Volatile Memory) Data Device Tree Bindings = - -This binding is intended to represent the location of hardware -configuration data stored in NVMEMs like eeprom, efuses and so on. - -On a significant proportion of boards, the manufacturer has stored -some data on NVMEM, for the OS to be able to retrieve these information -and act upon it. Obviously, the OS has to know about where to retrieve -these data from, and where they are stored on the storage device. - -This document is here to document this. - -= Data providers = -Contains bindings specific to provider drivers and data cells as children -of this node. - -Optional properties: - read-only: Mark the provider as read only. - -= Data cells = -These are the child nodes of the provider which contain data cell -information like offset and size in nvmem provider. - -Required properties: -reg: specifies the offset in byte within the storage device. - -Optional properties: - -bits: Is pair of bit location and number of bits, which specifies offset - in bit and number of bits within the address range specified by reg property. - Offset takes values from 0-7. - -For example: - - /* Provider */ - qfprom: qfprom@700000 { - ... - - /* Data cells */ - tsens_calibration: calib@404 { - reg = <0x404 0x10>; - }; - - tsens_calibration_bckp: calib_bckp@504 { - reg = <0x504 0x11>; - bits = <6 128> - }; - - pvs_version: pvs-version@6 { - reg = <0x6 0x2> - bits = <7 2> - }; - - speed_bin: speed-bin@c{ - reg = <0xc 0x1>; - bits = <2 3>; - - }; - ... - }; - -= Data consumers = -Are device nodes which consume nvmem data cells/providers. - -Required-properties: -nvmem-cells: list of phandle to the nvmem data cells. -nvmem-cell-names: names for the each nvmem-cells specified. Required if - nvmem-cells is used. - -Optional-properties: -nvmem : list of phandles to nvmem providers. -nvmem-names: names for the each nvmem provider. required if nvmem is used. - -For example: - - tsens { - ... - nvmem-cells = <&tsens_calibration>; - nvmem-cell-names = "calibration"; - }; +This file has been moved to nvmem.yaml and nvmem-consumer.yaml. |