From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Andreas_Bie=DFmann?= Date: Tue, 21 Aug 2012 13:11:18 +0200 Subject: [U-Boot] [PATCH 2/4] spi: atmel: add WDRBT bit to avoid receive overrun In-Reply-To: <1345444344-31340-2-git-send-email-voice.shen@atmel.com> References: <1345444344-31340-1-git-send-email-voice.shen@atmel.com> <1345444344-31340-2-git-send-email-voice.shen@atmel.com> Message-ID: <50336CD6.8030703@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear Bo Shen, On 20.08.2012 08:32, Bo Shen wrote: > The atmel at91sam9x5 series spi has feature to avoid receive overren > > Using the patch to enable it > > Signed-off-by: Bo Shen Acked-by: Andreas Bie?mann Mike, will you take this patch? Best regards Andreas Bie?mann > --- > drivers/spi/atmel_spi.c | 3 +++ > drivers/spi/atmel_spi.h | 1 + > 2 files changed, 4 insertions(+) > > 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) >