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c16524e6a9
Add comments to NAND "gpios" property to make it clearer. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
Atmel NAND flash
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Required properties:
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- compatible : "atmel,at91rm9200-nand".
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- reg : should specify localbus address and size used for the chip,
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and if availlable the ECC.
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- atmel,nand-addr-offset : offset for the address latch.
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- atmel,nand-cmd-offset : offset for the command latch.
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- #address-cells, #size-cells : Must be present if the device has sub-nodes
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representing partitions.
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- gpios : specifies the gpio pins to control the NAND device. detect is an
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optional gpio and may be set to 0 if not present.
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Optional properties:
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- nand-ecc-mode : String, operation mode of the NAND ecc mode, soft by default.
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Supported values are: "none", "soft", "hw", "hw_syndrome", "hw_oob_first",
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"soft_bch".
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- nand-bus-width : 8 or 16 bus width if not present 8
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- nand-on-flash-bbt: boolean to enable on flash bbt option if not present false
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Examples:
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nand0: nand@40000000,0 {
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compatible = "atmel,at91rm9200-nand";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0x40000000 0x10000000
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0xffffe800 0x200
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>;
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atmel,nand-addr-offset = <21>; /* ale */
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atmel,nand-cmd-offset = <22>; /* cle */
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nand-on-flash-bbt;
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nand-ecc-mode = "soft";
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gpios = <&pioC 13 0 /* rdy */
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&pioC 14 0 /* nce */
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0 /* cd */
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>;
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partition@0 {
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...
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};
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};
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