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mtd: davinci: add support for parition binding nodes 

Enhance the driver to support partition subnodes inside the nand
device bindings to describe partions on the nand device.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Murali Karicheri 2012-11-02 10:22:41 -04:00 committed by Artem Bityutskiy
parent 6f9f59ee2e
commit 192afdbfbc
2 changed files with 17 additions and 2 deletions
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8
Documentation/devicetree/bindings/arm/davinci/nand.txt
View File

@ -23,6 +23,9 @@ Recommended properties :
- ti,davinci-nand-buswidth: buswidth 8 or 16
- ti,davinci-nand-use-bbt: use flash based bad block table support.
nand device bindings may contain additional sub-nodes describing
partitions of the address space. See partition.txt for more detail.
Example (enbw_cmc board):
aemif@60000000 {
compatible = "ti,davinci-aemif";
@ -47,5 +50,10 @@ aemif@60000000 {
ti,davinci-ecc-mode = "hw";
ti,davinci-ecc-bits = <4>;
ti,davinci-nand-use-bbt;
partition@180000 {
label = "ubifs";
reg = <0x180000 0x7e80000>;
};
};
};

11
drivers/mtd/nand/davinci_nand.c
View File

@ -821,9 +821,16 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
if (ret < 0)
goto err_scan;
ret = mtd_device_parse_register(&info->mtd, NULL, NULL, pdata->parts,
pdata->nr_parts);
if (pdata->parts)
ret = mtd_device_parse_register(&info->mtd, NULL, NULL,
pdata->parts, pdata->nr_parts);
else {
struct mtd_part_parser_data ppdata;
ppdata.of_node = pdev->dev.of_node;
ret = mtd_device_parse_register(&info->mtd, NULL, &ppdata,
NULL, 0);
}
if (ret < 0)
goto err_scan;