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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-10-28 12:10:36 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2013-10-31 12:53:08 +0100 |
| commit | 2fa5f069585d6755ff27321345d8c0940a4b88e2 (patch) | |
| tree | 1f826b8a7613d0170043099955896cab21273f3e /drivers/spi | |
| parent | fb40dd5157f5045726c667a0216744189bea591c (diff) | |
| download | barebox-2fa5f069585d6755ff27321345d8c0940a4b88e2.tar.gz barebox-2fa5f069585d6755ff27321345d8c0940a4b88e2.tar.xz | |
spi: Get bus_num from devicetree
Get the bus_num from devicetree if a "spi" alias exists.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 64aa63e47a..ad65884fda 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -226,6 +226,9 @@ int spi_register_master(struct spi_master *master) if (master->num_chipselect == 0) return -EINVAL; + if ((master->bus_num < 0) && master->dev->device_node) + master->bus_num = of_alias_get_id(master->dev->device_node, "spi"); + /* convention: dynamically assigned bus IDs count down from the max */ if (master->bus_num < 0) master->bus_num = dyn_bus_id--; |