diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2020-07-08 11:37:25 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2021-06-07 12:48:20 +0100 |
| commit | 86e44bf1ee6220702dbcf306c2917aa8d24b9c8c (patch) | |
| tree | d986b3c1aa338efa21c1f3f9d088b4dd67a9d367 | |
| parent | 4fb00423b25af8326d04058ed648a3f6e42e84c5 (diff) | |
net: mvneta: program 1ms autonegotiation clock divisor
Program the 1ms autonegotiation clock divisor according to the clocking
rate of neta - without this, the 1ms clock ticks at about 660us on
Armada 38x configured for 250MHz. Bring this into correct specification.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
| -rw-r--r-- | drivers/net/ethernet/marvell/mvneta.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index b1ffa6f4f03b..b0d4b1405298 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -3967,7 +3967,7 @@ static void mvneta_mac_config(struct phylink_config *config, unsigned int mode, } else if (state->interface == PHY_INTERFACE_MODE_SGMII) { /* SGMII mode receives the state from the PHY */ new_ctrl2 |= MVNETA_GMAC2_INBAND_AN_ENABLE; - new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE; + new_clk = MVNETA_GMAC_1MS_CLOCK_ENABLE; new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN | MVNETA_GMAC_FORCE_LINK_PASS | MVNETA_GMAC_CONFIG_MII_SPEED | @@ -3979,7 +3979,7 @@ static void mvneta_mac_config(struct phylink_config *config, unsigned int mode, } else { /* 802.3z negotiation - only 1000base-X */ new_ctrl0 |= MVNETA_GMAC0_PORT_1000BASE_X; - new_clk |= MVNETA_GMAC_1MS_CLOCK_ENABLE; + new_clk = MVNETA_GMAC_1MS_CLOCK_ENABLE; new_an = (new_an & ~(MVNETA_GMAC_FORCE_LINK_DOWN | MVNETA_GMAC_FORCE_LINK_PASS | MVNETA_GMAC_CONFIG_MII_SPEED)) | @@ -3992,6 +3992,10 @@ static void mvneta_mac_config(struct phylink_config *config, unsigned int mode, new_an |= MVNETA_GMAC_AN_FLOW_CTRL_EN; } + /* Set the 1ms clock divisor */ + if (new_clk == MVNETA_GMAC_1MS_CLOCK_ENABLE) + new_clk |= clk_get_rate(pp->clk) / 1000; + /* Armada 370 documentation says we can only change the port mode * and in-band enable when the link is down, so force it down * while making these changes. We also do this for GMAC_CTRL2 */ |