It needs to be possible to define the partitions of an MTD device from an OF
devicetree. This patch adds a call to of_mtd_parse_partitions if:
i) there are no commandline partitions defined
ii) there are no partitions set up by platform_data
iii) and an of_node is present on the device
This permits the following devicetree structure:
flash0: m...@0 {
compatible = "st,m25p10";
reg = <0>;
spi-max-frequency = <100000000>;
#address-cells = <1>;
#size-cells = <1>;
partit...@0 {
label = "bootloader";
reg = <0x00000000 0x00018000>;
read-only;
}
partit...@18000 {
label = "data";
reg = <0x00018000 0x00008000>;
};
};
Signed-off-by: Jonas Bonn <[email protected]>
---
drivers/mtd/devices/m25p80.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 6f512b5..a349498 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -924,6 +924,10 @@ static int __devinit m25p_probe(struct spi_device *spi)
nr_parts = data->nr_parts;
}
+ if (nr_parts <= 0 && spi->dev.of_node) {
+ nr_parts = of_mtd_parse_partitions(&spi->dev,
spi->dev.of_node, &parts);
+ }
+
if (nr_parts > 0) {
for (i = 0; i < nr_parts; i++) {
DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
--
1.7.1
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