diff mbox series

[V6,1/2] net: stmmac: Power up SERDES after the PHY link

Message ID 20221201155844.43217-1-jonathanh@nvidia.com
State Accepted
Headers show
Series [V6,1/2] net: stmmac: Power up SERDES after the PHY link | expand

Commit Message

Jon Hunter Dec. 1, 2022, 3:58 p.m. UTC 
From: Revanth Kumar Uppala <ruppala@nvidia.com>

The Tegra MGBE ethernet controller requires that the SERDES link is
powered-up after the PHY link is up, otherwise the link fails to
become ready following a resume from suspend. Add a variable to indicate
that the SERDES link must be powered-up after the PHY link.

Signed-off-by: Revanth Kumar Uppala <ruppala@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
---
Changes since V5:
- None
Changes since V4:
- This patch was added in the 5th iteration of the series.

 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 7 +++++--
 include/linux/stmmac.h                            | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org Dec. 5, 2022, 9:50 a.m. UTC | #1 
Hello:

This series was applied to netdev/net-next.git (master)
by David S. Miller <davem@davemloft.net>:

On Thu, 1 Dec 2022 15:58:43 +0000 you wrote:
> From: Revanth Kumar Uppala <ruppala@nvidia.com>
> 
> The Tegra MGBE ethernet controller requires that the SERDES link is
> powered-up after the PHY link is up, otherwise the link fails to
> become ready following a resume from suspend. Add a variable to indicate
> that the SERDES link must be powered-up after the PHY link.
> 
> [...]

Here is the summary with links:
  - [V6,1/2] net: stmmac: Power up SERDES after the PHY link
    https://git.kernel.org/netdev/net-next/c/a46e90101242
  - [V6,2/2] net: stmmac: tegra: Add MGBE support
    https://git.kernel.org/netdev/net-next/c/d8ca113724e7

You are awesome, thank you!
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0a9d13d7976f..3affb7d3a005 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -988,6 +988,9 @@  static void stmmac_mac_link_up(struct phylink_config *config,
 	struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
 	u32 old_ctrl, ctrl;
 
+	if (priv->plat->serdes_up_after_phy_linkup && priv->plat->serdes_powerup)
+		priv->plat->serdes_powerup(priv->dev, priv->plat->bsp_priv);
+
 	old_ctrl = readl(priv->ioaddr + MAC_CTRL_REG);
 	ctrl = old_ctrl & ~priv->hw->link.speed_mask;
 
@@ -3801,7 +3804,7 @@  static int __stmmac_open(struct net_device *dev,
 
 	stmmac_reset_queues_param(priv);
 
-	if (priv->plat->serdes_powerup) {
+	if (!priv->plat->serdes_up_after_phy_linkup && priv->plat->serdes_powerup) {
 		ret = priv->plat->serdes_powerup(dev, priv->plat->bsp_priv);
 		if (ret < 0) {
 			netdev_err(priv->dev, "%s: Serdes powerup failed\n",
@@ -7510,7 +7513,7 @@  int stmmac_resume(struct device *dev)
 			stmmac_mdio_reset(priv->mii);
 	}
 
-	if (priv->plat->serdes_powerup) {
+	if (!priv->plat->serdes_up_after_phy_linkup && priv->plat->serdes_powerup) {
 		ret = priv->plat->serdes_powerup(ndev,
 						 priv->plat->bsp_priv);
 
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index fb2e88614f5d..83ca2e8eb6b5 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -271,5 +271,6 @@  struct plat_stmmacenet_data {
 	int msi_tx_base_vec;
 	bool use_phy_wol;
 	bool sph_disable;
+	bool serdes_up_after_phy_linkup;
 };
 #endif