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Commit 192afdbf authored by Murali Karicheri's avatar Murali Karicheri Committed by Artem Bityutskiy
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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: default avatarMurali Karicheri <m-karicheri2@ti.com>
Reviewed-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
parent 6f9f59ee

Documentation/devicetree/bindings/arm/davinci/nand.txt

+8 −0
Original line number Diff line number Diff line
@@ -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>;

		};

	};

};

drivers/mtd/nand/davinci_nand.c

+10 −3
Original line number Diff line number Diff line
@@ -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;