Enhance the driver to support partition subnodes inside the nand
device bindings to describe partitions on the nand device.
Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
---
.../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
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