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    Subject[PATCH v4 3/6] net: stmmac: dwmac-rk: add pd_gmac support for rk3399
    Date
    From: David Wu <david.wu@rock-chips.com>

    Add the gmac power domain support for rk3399, in order to save more
    power consumption.

    Signed-off-by: David Wu <david.wu@rock-chips.com>
    Signed-off-by: Caesar Wang <wxt@rock-chips.com>
    ---

    Changes in v4: None
    Changes in v3: None
    Changes in v2:
    - fixes the build error on next kernel.

    drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
    index e2ba6c4..3740a44 100644
    --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
    +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
    @@ -30,6 +30,7 @@
    #include <linux/delay.h>
    #include <linux/mfd/syscon.h>
    #include <linux/regmap.h>
    +#include <linux/pm_runtime.h>

    #include "stmmac_platform.h"

    @@ -883,11 +884,19 @@ static int rk_gmac_powerup(struct rk_priv_data *bsp_priv)
    if (ret)
    return ret;

    + pm_runtime_enable(dev);
    + pm_runtime_get_sync(dev);
    +
    return 0;
    }

    static void rk_gmac_powerdown(struct rk_priv_data *gmac)
    {
    + struct device *dev = &gmac->pdev->dev;
    +
    + pm_runtime_put_sync(dev);
    + pm_runtime_disable(dev);
    +
    phy_power_on(gmac, false);
    gmac_clk_enable(gmac, false);
    }
    --
    1.9.1
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