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Diffstat (limited to 'Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ifc.yaml')
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diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ifc.yaml b/Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ifc.yaml new file mode 100644 index 000000000000..f7cf0f91c1c0 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/fsl/fsl,ifc.yaml @@ -0,0 +1,135 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/fsl/fsl,ifc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: FSL/NXP Integrated Flash Controller + +maintainers: + - Shawn Guo <shawnguo@kernel.org> + +description: | + NXP's integrated flash controller (IFC) is an advanced version of the + enhanced local bus controller which includes similar programming and signal + interfaces with an extended feature set. The IFC provides access to multiple + external memory types, such as NAND flash (SLC and MLC), NOR flash, EPROM, + SRAM and other memories where address and data are shared on a bus. + +properties: + $nodename: + pattern: "^memory-controller@[0-9a-f]+$" + + compatible: + const: fsl,ifc + + "#address-cells": + enum: [2, 3] + description: | + Should be either two or three. The first cell is the chipselect + number, and the remaining cells are the offset into the chipselect. + + "#size-cells": + enum: [1, 2] + description: | + Either one or two, depending on how large each chipselect can be. + + reg: + maxItems: 1 + + interrupts: + minItems: 1 + maxItems: 2 + description: | + IFC may have one or two interrupts. If two interrupt specifiers are + present, the first is the "common" interrupt (CM_EVTER_STAT), and the + second is the NAND interrupt (NAND_EVTER_STAT). If there is only one, + that interrupt reports both types of event. + + little-endian: + type: boolean + description: | + If this property is absent, the big-endian mode will be in use as default + for registers. + + ranges: + description: | + Each range corresponds to a single chipselect, and covers the entire + access window as configured. + +patternProperties: + "^nand@[a-f0-9]+(,[a-f0-9]+)+$": + type: object + properties: + compatible: + const: fsl,ifc-nand + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + patternProperties: + "^partition@[0-9a-f]+": + $ref: /schemas/mtd/partitions/partition.yaml# + deprecated: true + + required: + - compatible + - reg + + additionalProperties: false + + "(flash|fpga|board-control|cpld)@[a-f0-9]+(,[a-f0-9]+)+$": + type: object + oneOf: + - $ref: /schemas/board/fsl,fpga-qixis.yaml# + - $ref: /schemas/mtd/mtd-physmap.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + memory-controller@ffe1e000 { + compatible = "fsl,ifc"; + #address-cells = <2>; + #size-cells = <1>; + reg = <0x0 0xffe1e000 0 0x2000>; + interrupts = <16 2 19 2>; + little-endian; + + /* NOR, NAND Flashes and CPLD on board */ + ranges = <0x0 0x0 0x0 0xee000000 0x02000000>, + <0x1 0x0 0x0 0xffa00000 0x00010000>, + <0x3 0x0 0x0 0xffb00000 0x00020000>; + + flash@0,0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x0 0x0 0x2000000>; + bank-width = <2>; + device-width = <1>; + + partition@0 { + /* 32MB for user data */ + reg = <0x0 0x02000000>; + label = "NOR Data"; + }; + }; + }; + }; |
