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authorBo Shen <voice.shen@atmel.com>2012-08-19 20:32:22 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-09-01 17:06:14 +0200
commit65c575506d60a70385e9751072a6bc2c5694ec38 (patch)
treed26540700b2d40e15f706d4e9b9775c9866ac4d7 /drivers/spi/atmel_spi.c
parent9bfc236872a626b250332be47f456b9b5822e0de (diff)
spi: atmel: add WDRBT bit to avoid receive overrun
The atmel at91sam9x5 series spi has feature to avoid receive overren Using the patch to enable it Signed-off-by: Bo Shen <voice.shen@atmel.com> Acked-by: Andreas Bießmann <andreas.devel@googlemail.com> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'drivers/spi/atmel_spi.c')
-rw-r--r--drivers/spi/atmel_spi.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 83ef8e8b19..c7a51f7f39 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -92,6 +92,9 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
as->slave.cs = cs;
as->regs = regs;
as->mr = ATMEL_SPI_MR_MSTR | ATMEL_SPI_MR_MODFDIS
+#if defined(CONFIG_AT91SAM9X5)
+ | ATMEL_SPI_MR_WDRBT
+#endif
| ATMEL_SPI_MR_PCS(~(1 << cs) & 0xf);
spi_writel(as, CSR(cs), csrx);