With the use of the qca8k dsa driver, some problem arised related to
port status detection. With a load on a specific port (for example a
simple speed test), the driver starts to behave in a strange way and
garbage data is produced. To address this, enlarge the sleep delay and
address a bug for the reg offset 31 that require additional delay for
this specific reg.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
((reg_offset << MII_REG_SHIFT) & MII_REG_MASK);
regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr);
- usleep_range(8, 10);
+ usleep_range(10, 13);
err = ipq8064_mdio_wait_busy(priv);
if (err)
((reg_offset << MII_REG_SHIFT) & MII_REG_MASK);
regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr);
- usleep_range(8, 10);
+
+ /* For the specific reg 31 extra time is needed or the next
+ * read will produce garbage data.
+ */
+ if (reg_offset == 31)
+ usleep_range(30, 43);
+ else
+ usleep_range(10, 13);
return ipq8064_mdio_wait_busy(priv);
}