[PATCH] mtd: davinci: add support for parition binding nodes
From: Murali Karicheri <hidden>
Date: 2012-11-02 14:21:01
Also in:
lkml
Subsystem:
memory technology devices (mtd), nand flash subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Enhance the driver to support partition subnodes inside the nand device bindings to describe partions on the nand device. Signed-off-by: Murali Karicheri <redacted> --- .../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 df1ab7d..321b053 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;
--
1.7.9.5