diff options
| -rw-r--r-- | drivers/net/can/sja1000/sja1000_platform.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/net/can/sja1000/sja1000_platform.c b/drivers/net/can/sja1000/sja1000_platform.c index b7fbe4f5772..95a844a7ee7 100644 --- a/drivers/net/can/sja1000/sja1000_platform.c +++ b/drivers/net/can/sja1000/sja1000_platform.c @@ -101,8 +101,24 @@ static void sp_populate_of(struct sja1000_priv *priv, struct device_node *of) int err; u32 prop; - priv->read_reg = sp_read_reg8; - priv->write_reg = sp_write_reg8; + err = of_property_read_u32(of, "reg-io-width", &prop); + if (err) + prop = 1; /* 8 bit is default */ + + switch (prop) { + case 4: + priv->read_reg = sp_read_reg32; + priv->write_reg = sp_write_reg32; + break; + case 2: + priv->read_reg = sp_read_reg16; + priv->write_reg = sp_write_reg16; + break; + case 1: /* fallthrough */ + default: + priv->read_reg = sp_read_reg8; + priv->write_reg = sp_write_reg8; + } err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop); if (!err) |