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path: root/drivers/spi/spi.c
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Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r--drivers/spi/spi.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index b76a26c..7ddea9b 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -5,6 +5,7 @@
*/
#include <common.h>
+#include <fdtdec.h>
#include <malloc.h>
#include <spi.h>
@@ -37,3 +38,21 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
return ptr;
}
+
+#ifdef CONFIG_OF_SPI
+struct spi_slave *spi_base_setup_slave_fdt(const void *blob, int busnum,
+ int node)
+{
+ int cs, max_hz, mode = 0;
+
+ cs = fdtdec_get_int(blob, node, "reg", -1);
+ max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", 100000);
+ if (fdtdec_get_bool(blob, node, "spi-cpol"))
+ mode |= SPI_CPOL;
+ if (fdtdec_get_bool(blob, node, "spi-cpha"))
+ mode |= SPI_CPHA;
+ if (fdtdec_get_bool(blob, node, "spi-cs-high"))
+ mode |= SPI_CS_HIGH;
+ return spi_setup_slave(busnum, cs, max_hz, mode);
+}
+#endif