diff options
| -rw-r--r-- | drivers/spi/spi-sunxi.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/spi/spi-sunxi.c b/drivers/spi/spi-sunxi.c index 13725ee7a2d..a7333d8d9c0 100644 --- a/drivers/spi/spi-sunxi.c +++ b/drivers/spi/spi-sunxi.c @@ -135,7 +135,6 @@ struct sun4i_spi_variant { struct sun4i_spi_plat { struct sun4i_spi_variant *variant; u32 base; - u32 max_hz; }; struct sun4i_spi_priv { @@ -238,6 +237,13 @@ static void sun4i_spi_set_speed_mode(struct udevice *dev) u32 reg; /* + * The uclass should take care that this won't happen. But anyway, + * avoid a div-by-zero exception. + */ + if (!priv->freq) + return; + + /* * Setup clock divider. * * We have two choices there. Either we can use the clock @@ -401,11 +407,10 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen, static int sun4i_spi_set_speed(struct udevice *dev, uint speed) { - struct sun4i_spi_plat *plat = dev_get_plat(dev); struct sun4i_spi_priv *priv = dev_get_priv(dev); - if (speed > plat->max_hz) - speed = plat->max_hz; + if (speed > SUN4I_SPI_MAX_RATE) + speed = SUN4I_SPI_MAX_RATE; if (speed < SUN4I_SPI_MIN_RATE) speed = SUN4I_SPI_MIN_RATE; @@ -458,7 +463,6 @@ static int sun4i_spi_probe(struct udevice *bus) priv->variant = plat->variant; priv->base = plat->base; - priv->freq = plat->max_hz; return 0; } @@ -466,16 +470,9 @@ static int sun4i_spi_probe(struct udevice *bus) static int sun4i_spi_of_to_plat(struct udevice *bus) { struct sun4i_spi_plat *plat = dev_get_plat(bus); - int node = dev_of_offset(bus); plat->base = dev_read_addr(bus); plat->variant = (struct sun4i_spi_variant *)dev_get_driver_data(bus); - plat->max_hz = fdtdec_get_int(gd->fdt_blob, node, - "spi-max-frequency", - SUN4I_SPI_DEFAULT_RATE); - - if (plat->max_hz > SUN4I_SPI_MAX_RATE) - plat->max_hz = SUN4I_SPI_MAX_RATE; return 0; } |