ping 2015-07-20 13:56 GMT+02:00 Mirza Krak <[email protected]>:
> From: Mirza Krak <[email protected]> > > Respect the mode passed in claim_bus call. > > Signed-off-by: Mirza Krak <[email protected]> > --- > drivers/spi/tegra20_slink.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/spi/tegra20_slink.c b/drivers/spi/tegra20_slink.c > index f6fb89b393f0..271e2adbb2e1 100644 > --- a/drivers/spi/tegra20_slink.c > +++ b/drivers/spi/tegra20_slink.c > @@ -36,6 +36,11 @@ DECLARE_GLOBAL_DATA_PTR; > #define SLINK_CMD_ENB (1 << 31) > #define SLINK_CMD_GO (1 << 30) > #define SLINK_CMD_M_S (1 << 28) > +#define SLINK_CMD_IDLE_SCLK_DRIVE_LOW (0 << 24) > +#define SLINK_CMD_IDLE_SCLK_DRIVE_HIGH (1 << 24) > +#define SLINK_CMD_IDLE_SCLK_PULL_LOW (2 << 24) > +#define SLINK_CMD_IDLE_SCLK_PULL_HIGH (3 << 24) > +#define SLINK_CMD_IDLE_SCLK_MASK (3 << 24) > #define SLINK_CMD_CK_SDA (1 << 21) > #define SLINK_CMD_CS_POL (1 << 13) > #define SLINK_CMD_CS_VAL (1 << 12) > @@ -146,6 +151,7 @@ static int tegra30_spi_claim_bus(struct udevice *dev) > struct udevice *bus = dev->parent; > struct tegra30_spi_priv *priv = dev_get_priv(bus); > struct spi_regs *regs = priv->regs; > + unsigned int mode = priv->mode; > u32 reg; > > /* Change SPI clock to correct frequency, PLLP_OUT0 source */ > @@ -161,6 +167,17 @@ static int tegra30_spi_claim_bus(struct udevice *dev) > /* Set master mode and sw controlled CS */ > reg = readl(®s->command); > reg |= SLINK_CMD_M_S | SLINK_CMD_CS_SOFT; > + > + /* Set CPOL and CPHA */ > + reg &= ~SLINK_CMD_IDLE_SCLK_MASK & ~SLINK_CMD_CK_SDA; > + if (mode & SPI_CPHA) > + reg |= SLINK_CMD_CK_SDA; > + > + if (mode & SPI_CPOL) > + reg |= SLINK_CMD_IDLE_SCLK_DRIVE_HIGH; > + else > + reg |= SLINK_CMD_IDLE_SCLK_DRIVE_LOW; > + > writel(reg, ®s->command); > debug("%s: COMMAND = %08x\n", __func__, readl(®s->command)); > > -- > 2.1.0 > > -- Med Vänliga Hälsningar / Best Regards ******************************************************************* Mirza Krak Host Mobility AB [email protected] Anders Personsgatan 12, 416 64 Göteborg Sweden http://www.hostmobility.com Direct: +46 31 31 32 704 Phone: +46 31 31 32 700 Fax: +46 31 80 67 51 Mobile: +46 730 28 06 22 ******************************************************************* _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
