diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mtd')
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/davinci-nand.txt | 94 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/gpmi-nand.txt | 8 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt | 6 |
3 files changed, 107 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/mtd/davinci-nand.txt b/Documentation/devicetree/bindings/mtd/davinci-nand.txt new file mode 100644 index 00000000000..cfb18abe600 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/davinci-nand.txt @@ -0,0 +1,94 @@ +Device tree bindings for Texas instruments Davinci/Keystone NAND controller + +This file provides information, what the device node for the davinci/keystone +NAND interface contains. + +Documentation: +Davinci DM646x - http://www.ti.com/lit/ug/sprueq7c/sprueq7c.pdf +Kestone - http://www.ti.com/lit/ug/sprugz3a/sprugz3a.pdf + +Required properties: + +- compatible: "ti,davinci-nand" + "ti,keystone-nand" + +- reg: Contains 2 offset/length values: + - offset and length for the access window. + - offset and length for accessing the AEMIF + control registers. + +- ti,davinci-chipselect: number of chipselect. Indicates on the + davinci_nand driver which chipselect is used + for accessing the nand. + Can be in the range [0-3]. + +Recommended properties : + +- ti,davinci-mask-ale: mask for ALE. Needed for executing address + phase. These offset will be added to the base + address for the chip select space the NAND Flash + device is connected to. + If not set equal to 0x08. + +- ti,davinci-mask-cle: mask for CLE. Needed for executing command + phase. These offset will be added to the base + address for the chip select space the NAND Flash + device is connected to. + If not set equal to 0x10. + +- ti,davinci-mask-chipsel: mask for chipselect address. Needed to mask + addresses for given chipselect. + +- nand-ecc-mode: operation mode of the NAND ecc mode. ECC mode + valid values for davinci driver: + - "none" + - "soft" + - "hw" + +- ti,davinci-ecc-bits: used ECC bits, currently supported 1 or 4. + +- nand-bus-width: buswidth 8 or 16. If not present 8. + +- nand-on-flash-bbt: use flash based bad block table support. OOB + identifier is saved in OOB area. If not present + false. + +Deprecated properties: + +- ti,davinci-ecc-mode: operation mode of the NAND ecc mode. ECC mode + valid values for davinci driver: + - "none" + - "soft" + - "hw" + +- ti,davinci-nand-buswidth: buswidth 8 or 16. If not present 8. + +- ti,davinci-nand-use-bbt: use flash based bad block table support. OOB + identifier is saved in OOB area. If not present + false. + +Nand device bindings may contain additional sub-nodes describing partitions of +the address space. See partition.txt for more detail. The NAND Flash timing +values must be programmed in the chip select’s node of AEMIF +memory-controller (see Documentation/devicetree/bindings/memory-controllers/ +davinci-aemif.txt). + +Example(da850 EVM ): + +nand_cs3@62000000 { + compatible = "ti,davinci-nand"; + reg = <0x62000000 0x807ff + 0x68000000 0x8000>; + ti,davinci-chipselect = <1>; + ti,davinci-mask-ale = <0>; + ti,davinci-mask-cle = <0>; + ti,davinci-mask-chipsel = <0>; + nand-ecc-mode = "hw"; + ti,davinci-ecc-bits = <4>; + nand-on-flash-bbt; + + partition@180000 { + label = "ubifs"; + reg = <0x180000 0x7e80000>; + }; +}; diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt index 551b2a179d0..458d5963468 100644 --- a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt +++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt @@ -17,6 +17,14 @@ Required properties: Optional properties: - nand-on-flash-bbt: boolean to enable on flash bbt option if not present false + - fsl,use-minimum-ecc: Protect this NAND flash with the minimum ECC + strength required. The required ECC strength is + automatically discoverable for some flash + (e.g., according to the ONFI standard). + However, note that if this strength is not + discoverable or this property is not enabled, + the software may chooses an implementation-defined + ECC scheme. The device tree may optionally contain sub-nodes describing partitions of the address space. See partition.txt for more detail. diff --git a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt index f1421e2bbab..86e0a5601ff 100644 --- a/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt +++ b/Documentation/devicetree/bindings/mtd/pxa3xx-nand.txt @@ -2,7 +2,9 @@ PXA3xx NAND DT bindings Required properties: - - compatible: Should be "marvell,pxa3xx-nand" + - compatible: Should be set to one of the following: + marvell,pxa3xx-nand + marvell,armada370-nand - reg: The register base for the controller - interrupts: The interrupt to map - #address-cells: Set to <1> if the node includes partitions @@ -13,6 +15,8 @@ Optional properties: - marvell,nand-keep-config: Set to keep the NAND controller config as set by the bootloader - num-cs: Number of chipselect lines to usw + - nand-on-flash-bbt: boolean to enable on flash bbt option if + not present false Example: |