When mac link goes down we don't need to mainitain the clocks to operate
at higher frequencies, as an optimized solution to save power when
the link goes down we are trying to bring down the clocks to the
frequencies corresponding to the lowest speed possible.
Signed-off-by: Sagar Cheluvegowda <quic_scheluve@xxxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index ec7c61ee44d4..f0166f0bc25f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -996,6 +996,9 @@ static void stmmac_mac_link_down(struct phylink_config *config,
{
struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
+ if (priv->plat->fix_mac_speed)
+ priv->plat->fix_mac_speed(priv->plat->bsp_priv, SPEED_10, mode);
+
stmmac_mac_set(priv, priv->ioaddr, false);
priv->eee_active = false;
priv->tx_lpi_enabled = false;
@@ -1004,6 +1007,11 @@ static void stmmac_mac_link_down(struct phylink_config *config,
if (priv->dma_cap.fpesel)
stmmac_fpe_link_state_handle(priv, false);
+
+ stmmac_set_icc_bw(priv, SPEED_10);
+
+ if (priv->plat->fix_mac_speed)
+ priv->plat->fix_mac_speed(priv->plat->bsp_priv, SPEED_10, mode);
}
static void stmmac_mac_link_up(struct phylink_config *config,
--
2.34.1
