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net: bcmgenet: Clear RGMII_LINK upon link down

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Clear the RGMII_LINK bit upon detecting link down to be consistent with
setting the bit upon link up. We also move the clearing of the
out-of-band disable to the runtime initialization rather than for each
link up/down transition.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20221118213754.1383364-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Florian Fainelli 2022-11-18 13:37:54 -08:00 • committed by Jakub Kicinski
parent 4e9a61394d
commit 696450c051
1 changed files with 14 additions and 5 deletions
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19
drivers/net/ethernet/broadcom/genet/bcmmii.c
View file

@ -72,7 +72,6 @@ static void bcmgenet_mac_config(struct net_device *dev)
* Receive clock is provided by the PHY.
*/
reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
reg &= ~OOB_DISABLE;
reg |= RGMII_LINK;
bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
@ -95,10 +94,18 @@ static void bcmgenet_mac_config(struct net_device *dev)
*/
void bcmgenet_mii_setup(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
struct phy_device *phydev = dev->phydev;
u32 reg;
if (phydev->link)
if (phydev->link) {
bcmgenet_mac_config(dev);
} else {
reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
reg &= ~RGMII_LINK;
bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
}
phy_print_status(phydev);
}
@ -266,18 +273,20 @@ int bcmgenet_mii_config(struct net_device *dev, bool init)
(priv->phy_interface != PHY_INTERFACE_MODE_MOCA);
/* This is an external PHY (xMII), so we need to enable the RGMII
* block for the interface to work
* block for the interface to work, unconditionally clear the
* Out-of-band disable since we do not need it.
*/
reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
reg &= ~OOB_DISABLE;
if (priv->ext_phy) {
reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
reg &= ~ID_MODE_DIS;
reg |= id_mode_dis;
if (GENET_IS_V1(priv) || GENET_IS_V2(priv) || GENET_IS_V3(priv))
reg |= RGMII_MODE_EN_V123;
else
reg |= RGMII_MODE_EN;
bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
}
bcmgenet_ext_writel(priv, reg, EXT_RGMII_OOB_CTRL);
if (init)
dev_info(kdev, "configuring instance for %s\n", phy_name);