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Subject[PATCH] net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow
Date
disable ptp_ref_clk in suspend flow, and enable it in resume flow.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c7c9e5f162e6..b592aeecc3dd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4469,6 +4469,8 @@ int stmmac_suspend(struct device *dev)
stmmac_mac_set(priv, priv->ioaddr, false);
pinctrl_pm_select_sleep_state(priv->device);
/* Disable clock in case of PWM is off */
+ if (priv->plat->clk_ptp_ref)
+ clk_disable_unprepare(priv->plat->clk_ptp_ref);
clk_disable(priv->plat->pclk);
clk_disable(priv->plat->stmmac_clk);
}
@@ -4535,6 +4537,8 @@ int stmmac_resume(struct device *dev)
/* enable the clk previously disabled */
clk_enable(priv->plat->stmmac_clk);
clk_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 */
if (priv->mii)
stmmac_mdio_reset(priv->mii);
--
2.18.0
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