* [PATCH] spi: spi-xilinx: Use DT information for bits_per_word value
@ 2013-02-11 14:55 Jens Renner (EFE)
0 siblings, 0 replies; only message in thread
From: Jens Renner (EFE) @ 2013-02-11 14:55 UTC (permalink / raw)
To: spi-devel-general; +Cc: linux-kernel
From: Jens Renner <renner@efe-gmbh.de>
This patch overrides the default value of bits_per_word with the actual value of "xlnx,num-transfer-bits" from the DTS file to allow for 16 and 32 bit word lengths.
Signed-off-by: Jens Renner <renner@efe-gmbh.de>
---
diff --git a/drivers/spi/spi-xilinx.c b/drivers/spi/spi-xilinx.c
index e1d7696..03abdfa 100644
--- a/drivers/spi/spi-xilinx.c
+++ b/drivers/spi/spi-xilinx.c
@@ -487,6 +487,12 @@ static int xilinx_spi_probe(struct platform_device *dev)
&len);
if (prop && len >= sizeof(*prop))
num_cs = __be32_to_cpup(prop);
+
+ /* override default number of bits per word */
+ prop = of_get_property(dev->dev.of_node,
+ "xlnx,num-transfer-bits", &len);
+ if (prop && len >= sizeof(*prop))
+ bits_per_word = __be32_to_cpup(prop);
}
#endif
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2013-02-11 14:55 [PATCH] spi: spi-xilinx: Use DT information for bits_per_word value Jens Renner (EFE)
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