@@ -4641,9 +4641,19 @@ static void mvpp2_gmac_config(struct mvpp2_port *port, unsigned int mode,
}
}
+/* Some fields of the auto-negotiation register require the port to be down when
+ * their value is updated.
+ */
+#define MVPP2_GMAC_AN_PORT_DOWN_MASK \
+ (MVPP2_GMAC_IN_BAND_AUTONEG | \
+ MVPP2_GMAC_IN_BAND_AUTONEG_BYPASS | \
+ MVPP2_GMAC_CONFIG_MII_SPEED | MVPP2_GMAC_CONFIG_GMII_SPEED | \
+ MVPP2_GMAC_AN_SPEED_EN | MVPP2_GMAC_CONFIG_FULL_DUPLEX | \
+ MVPP2_GMAC_AN_DUPLEX_EN)
+
if ((old_ctrl0 ^ ctrl0) & MVPP2_GMAC_PORT_TYPE_MASK ||
(old_ctrl2 ^ ctrl2) & MVPP2_GMAC_INBAND_AN_MASK ||
- (old_an ^ an) & MVPP2_GMAC_IN_BAND_AUTONEG) {
+ (old_an ^ an) & MVPP2_GMAC_AN_PORT_DOWN_MASK) {
/* Force link down */
old_an &= ~MVPP2_GMAC_FORCE_LINK_PASS;
old_an |= MVPP2_GMAC_FORCE_LINK_DOWN;
The GMAC configuration helper modifies values in the auto-negotiation register. Some of its values require the port to be forced down when modifying their values. This patches fixes the check made on the bit to be updated in this register, so that the port is forced down when needed. This fix cases where some of those parameters were updated, but not taken into account, such as when using RGMII interfaces. Fixes: d14e078f23cc ("net: marvell: mvpp2: only reprogram what is necessary on mac_config") Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)