From 192afdbfbc5c3346e27b3c3e3be8337495b2a41b Mon Sep 17 00:00:00 2001 From: Murali Karicheri Date: Fri, 2 Nov 2012 10:22:41 -0400 Subject: [PATCH] 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 Reviewed-by: Grant Likely Signed-off-by: Artem Bityutskiy --- Documentation/devicetree/bindings/arm/davinci/nand.txt | 8 ++++++++ drivers/mtd/nand/davinci_nand.c | 13 ++++++++++--- 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/davinci/nand.txt b/Documentation/devicetree/bindings/arm/davinci/nand.txt index e37241f..4746452 100644 --- a/Documentation/devicetree/bindings/arm/davinci/nand.txt +++ b/Documentation/devicetree/bindings/arm/davinci/nand.txt @@ -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>; + }; }; }; diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c index 945047a..3502606 100644 --- a/drivers/mtd/nand/davinci_nand.c +++ b/drivers/mtd/nand/davinci_nand.c @@ -821,9 +821,16 @@ syndrome_done: 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; -- 2.7.4