From: Jason Wu jason.wu@petalogix.com
to make sure it is in the clear state.
Signed-off-by: Jason Wu huanyu@xilinx.com --- drivers/spi/xilinx_spi.c | 2 ++ drivers/spi/xilinx_spi.h | 3 +++ 2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c index 52a4134..db01cc2 100644 --- a/drivers/spi/xilinx_spi.c +++ b/drivers/spi/xilinx_spi.c @@ -99,6 +99,8 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, debug("%s: bus:%i cs:%i base:%p mode:%x max_hz:%d\n", __func__, bus, cs, xilspi->regs, xilspi->mode, xilspi->freq);
+ writel(SPISSR_RESET_VALUE, &xilspi->regs->srr); + return &xilspi->slave; }
diff --git a/drivers/spi/xilinx_spi.h b/drivers/spi/xilinx_spi.h index 32610d2..69d0b94 100644 --- a/drivers/spi/xilinx_spi.h +++ b/drivers/spi/xilinx_spi.h @@ -119,6 +119,9 @@ struct xilinx_spi_reg { #define SPIRFOR_OCYVAL_POS 0 #define SPIRFOR_OCYVAL_MASK (0xf << SPIRFOR_OCYVAL_POS)
+/* SPI Software Reset Register (ssr) */ +#define SPISSR_RESET_VALUE 0x0a + struct xilinx_spi_slave { struct spi_slave slave; struct xilinx_spi_reg *regs;