diff options
| author | minwuklee <mlee@nvidia.com> | 2010-12-06 13:55:52 +0900 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:43:21 -0800 |
| commit | 8e0da7339927e15e054f31f516c373895cd7a70f (patch) | |
| tree | 05b6450e65fa6fcb63e6c4f1dc7ad957329e6384 /drivers/spi | |
| parent | f13e5c1512fc6d7378cd9328a9ac58b6bd6c65b9 (diff) | |
[tegra:dma] set dma burst size for spi/slink
for spi/slink, depending on transfer size,
burst size can be set to 1, 4, or 8.
bug 747979
Original-Change-Id: Ieae0285d374e7d0eb6c2c2e633f8cafbb2b51b3a
Reviewed-on: http://git-master/r/12076
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
Rebase-Id: R366881cc8a4ba50cdd815b97f52b4e7d4dfb1ee6
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-tegra.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/spi/spi-tegra.c b/drivers/spi/spi-tegra.c index c568b184e103..619863e30abd 100644 --- a/drivers/spi/spi-tegra.c +++ b/drivers/spi/spi-tegra.c @@ -201,8 +201,10 @@ static void spi_tegra_go(struct spi_tegra_data *tspi) val &= ~SLINK_TX_TRIG_MASK & ~SLINK_RX_TRIG_MASK; if (tspi->rx_dma_req.size & 0xF) { val |= SLINK_TX_TRIG_1 | SLINK_RX_TRIG_1; - } else { + } else if ((tspi->rx_dma_req.size >> 4) & 0x1){ val |= SLINK_TX_TRIG_4 | SLINK_RX_TRIG_4; + } else { + val |= SLINK_TX_TRIG_8 | SLINK_RX_TRIG_8; } spi_tegra_writel(tspi, val, SLINK_DMA_CTL); } |