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| author | Bo Shen <voice.shen@atmel.com> | 2012-08-19 20:32:22 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 17:06:14 +0200 |
| commit | 65c575506d60a70385e9751072a6bc2c5694ec38 (patch) | |
| tree | d26540700b2d40e15f706d4e9b9775c9866ac4d7 | |
| parent | 9bfc236872a626b250332be47f456b9b5822e0de (diff) | |
| download | u-boot-imx-65c575506d60a70385e9751072a6bc2c5694ec38.zip u-boot-imx-65c575506d60a70385e9751072a6bc2c5694ec38.tar.gz u-boot-imx-65c575506d60a70385e9751072a6bc2c5694ec38.tar.bz2 | |
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>
| -rw-r--r-- | drivers/spi/atmel_spi.c | 3 | ||||
| -rw-r--r-- | drivers/spi/atmel_spi.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c index 83ef8e8..c7a51f7 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); diff --git a/drivers/spi/atmel_spi.h b/drivers/spi/atmel_spi.h index 8b69a6d..057de9a 100644 --- a/drivers/spi/atmel_spi.h +++ b/drivers/spi/atmel_spi.h @@ -26,6 +26,7 @@ #define ATMEL_SPI_MR_PCSDEC (1 << 2) #define ATMEL_SPI_MR_FDIV (1 << 3) #define ATMEL_SPI_MR_MODFDIS (1 << 4) +#define ATMEL_SPI_MR_WDRBT (1 << 5) #define ATMEL_SPI_MR_LLB (1 << 7) #define ATMEL_SPI_MR_PCS(x) (((x) & 15) << 16) #define ATMEL_SPI_MR_DLYBCS(x) ((x) << 24) |