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    Subject[PATCH] net: fec: Add "phy-reset-active-low" property to DT
    Date
    We need that for a custom hardware that needs the reverse reset
    sequence.

    Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
    ---
    Documentation/devicetree/bindings/net/fsl-fec.txt | 3 +++
    drivers/net/ethernet/freescale/fec_main.c | 8 ++++++--
    2 files changed, 9 insertions(+), 2 deletions(-)

    diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt
    index a9eb611..a4799ff 100644
    --- a/Documentation/devicetree/bindings/net/fsl-fec.txt
    +++ b/Documentation/devicetree/bindings/net/fsl-fec.txt
    @@ -12,6 +12,9 @@ Optional properties:
    only if property "phy-reset-gpios" is available. Missing the property
    will have the duration be 1 millisecond. Numbers greater than 1000 are
    invalid and 1 millisecond will be used instead.
    +- phy-reset-active-low : If present then the reset sequence using the GPIO
    + specified in the "phy-reset-gpios" property is reversed (H=reset state,
    + L=operation state).
    - phy-supply : regulator that powers the Ethernet PHY.
    - phy-handle : phandle to the PHY device connected to this device.
    - fixed-link : Assume a fixed link. See fixed-link.txt in the same directory.
    diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
    index 41c81f6..98caf87 100644
    --- a/drivers/net/ethernet/freescale/fec_main.c
    +++ b/drivers/net/ethernet/freescale/fec_main.c
    @@ -3229,6 +3229,7 @@ static int fec_enet_init(struct net_device *ndev)
    static void fec_reset_phy(struct platform_device *pdev)
    {
    int err, phy_reset;
    + bool active_low = false;
    int msec = 1;
    struct device_node *np = pdev->dev.of_node;

    @@ -3244,14 +3245,17 @@ static void fec_reset_phy(struct platform_device *pdev)
    if (!gpio_is_valid(phy_reset))
    return;

    + active_low = of_property_read_bool(np, "phy-reset-active-low");
    +
    err = devm_gpio_request_one(&pdev->dev, phy_reset,
    - GPIOF_OUT_INIT_LOW, "phy-reset");
    + active_low ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
    + "phy-reset");
    if (err) {
    dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err);
    return;
    }
    msleep(msec);
    - gpio_set_value_cansleep(phy_reset, 1);
    + gpio_set_value_cansleep(phy_reset, !active_low);
    }
    #else /* CONFIG_OF */
    static void fec_reset_phy(struct platform_device *pdev)
    --
    2.7.1
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