From: Biao Huang <biao.huang@mediatek.com>
To: <davem@davemloft.net>, Jose Abreu <joabreu@synopsys.com>,
<andrew@lunn.ch>
Cc: <jakub.kicinski@netronome.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
<netdev@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>, <yt.shen@mediatek.com>,
<biao.huang@mediatek.com>, <jianguo.zhang@mediatek.com>,
<boon.leong.ong@intel.com>
Subject: [v2, PATCH] net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow
Date: Tue, 15 Oct 2019 11:24:44 +0800 [thread overview]
Message-ID: <20191015032444.15145-2-biao.huang@mediatek.com> (raw)
In-Reply-To: <20191015032444.15145-1-biao.huang@mediatek.com>
disable ptp_ref_clk in suspend flow, and enable it in resume flow.
Fixes: f573c0b9c4e0 ("stmmac: move stmmac_clk, pclk, clk_ptp_ref and stmmac_rst to platform structure")
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d3232738fb25..d7c12b86b94f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4737,8 +4737,10 @@ 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 */
- clk_disable(priv->plat->pclk);
- clk_disable(priv->plat->stmmac_clk);
+ if (priv->plat->clk_ptp_ref)
+ 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);
@@ -4801,8 +4803,10 @@ int stmmac_resume(struct device *dev)
} else {
pinctrl_pm_select_default_state(priv->device);
/* enable the clk previously disabled */
- clk_enable(priv->plat->stmmac_clk);
- clk_enable(priv->plat->pclk);
+ clk_prepare_enable(priv->plat->stmmac_clk);
+ 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 */
if (priv->mii)
stmmac_mdio_reset(priv->mii);
--
2.18.0
next prev parent reply other threads:[~2019-10-15 3:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-15 3:24 [v2, PATCH 0/1] net: stmmac: disable/enable ptp_ref_clk in suspend/resume flow Biao Huang
2019-10-15 3:24 ` Biao Huang [this message]
2019-10-16 20:27 ` [v2, PATCH] " David Miller
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