Commit 4f0278dac56a ("net: sun8i-emac: Lower MDIO frequency") leads to network failure on the OrangePi PC.
=> dhcp sun8i_emac_eth_start: Timeout
According to the commit message the change of the MDIO frequency is only required for external PHYs.
Fixes: 4f0278dac56a ("net: sun8i-emac: Lower MDIO frequency") Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- drivers/net/sun8i_emac.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index 5a1b38bf80..d7553fe163 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -211,7 +211,9 @@ static int sun8i_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) * The EMAC clock is either 200 or 300 MHz, so we need a divider * of 128 to get the MDIO frequency below the required 2.5 MHz. */ - mii_cmd |= MDIO_CMD_MII_CLK_CSR_DIV_128 << MDIO_CMD_MII_CLK_CSR_SHIFT; + if (!priv->use_internal_phy) + mii_cmd |= MDIO_CMD_MII_CLK_CSR_DIV_128 << + MDIO_CMD_MII_CLK_CSR_SHIFT;
mii_cmd |= MDIO_CMD_MII_BUSY;
@@ -242,7 +244,9 @@ static int sun8i_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, * The EMAC clock is either 200 or 300 MHz, so we need a divider * of 128 to get the MDIO frequency below the required 2.5 MHz. */ - mii_cmd |= MDIO_CMD_MII_CLK_CSR_DIV_128 << MDIO_CMD_MII_CLK_CSR_SHIFT; + if (!priv->use_internal_phy) + mii_cmd |= MDIO_CMD_MII_CLK_CSR_DIV_128 << + MDIO_CMD_MII_CLK_CSR_SHIFT;
mii_cmd |= MDIO_CMD_MII_WRITE; mii_cmd |= MDIO_CMD_MII_BUSY; -- 2.31.0