Messages in this thread Patch in this message | | | From | Biao Huang <> | Subject | [PATCH] net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow | Date | Wed, 9 Oct 2019 16:56:49 +0800 |
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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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