Commit cd8c21ca authored by Biao Huang's avatar Biao Huang Committed by Greg Kroah-Hartman

net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow

[ Upstream commit e497c20e ]

disable ptp_ref_clk in suspend flow, and enable it in resume flow.

Fixes: f573c0b9 ("stmmac: move stmmac_clk, pclk, clk_ptp_ref and stmmac_rst to platform structure")
Signed-off-by: default avatarBiao Huang <biao.huang@mediatek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent da4f0aed
...@@ -4522,8 +4522,10 @@ int stmmac_suspend(struct device *dev) ...@@ -4522,8 +4522,10 @@ int stmmac_suspend(struct device *dev)
stmmac_mac_set(priv, priv->ioaddr, false); stmmac_mac_set(priv, priv->ioaddr, false);
pinctrl_pm_select_sleep_state(priv->device); pinctrl_pm_select_sleep_state(priv->device);
/* Disable clock in case of PWM is off */ /* Disable clock in case of PWM is off */
clk_disable(priv->plat->pclk); if (priv->plat->clk_ptp_ref)
clk_disable(priv->plat->stmmac_clk); clk_disable_unprepare(priv->plat->clk_ptp_ref);
clk_disable_unprepare(priv->plat->pclk);
clk_disable_unprepare(priv->plat->stmmac_clk);
} }
mutex_unlock(&priv->lock); mutex_unlock(&priv->lock);
...@@ -4588,8 +4590,10 @@ int stmmac_resume(struct device *dev) ...@@ -4588,8 +4590,10 @@ int stmmac_resume(struct device *dev)
} else { } else {
pinctrl_pm_select_default_state(priv->device); pinctrl_pm_select_default_state(priv->device);
/* enable the clk previously disabled */ /* enable the clk previously disabled */
clk_enable(priv->plat->stmmac_clk); clk_prepare_enable(priv->plat->stmmac_clk);
clk_enable(priv->plat->pclk); clk_prepare_enable(priv->plat->pclk);
if (priv->plat->clk_ptp_ref)
clk_prepare_enable(priv->plat->clk_ptp_ref);
/* reset the phy so that it's ready */ /* reset the phy so that it's ready */
if (priv->mii) if (priv->mii)
stmmac_mdio_reset(priv->mii); stmmac_mdio_reset(priv->mii);
......
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