From 64f10f6ebf5a6d3aef106af43cf697682d022f48 Mon Sep 17 00:00:00 2001 From: Bernhard Walle Date: Mon, 8 Feb 2016 21:21:13 +0100 Subject: [PATCH] net: fec: Add "phy-reset-active-low" property to DT We need that for a custom hardware that needs the reverse reset sequence. Signed-off-by: Bernhard Walle Signed-off-by: David S. Miller --- 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 ef18ca5..bad0ba2 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3191,6 +3191,7 @@ 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; @@ -3206,14 +3207,17 @@ 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) -- 2.7.4