From: Herve Codina Date: Thu, 20 Jun 2024 12:01:25 +0000 (+0200) Subject: net: mdio: mscc-miim: Handle the switch reset X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9e6d33937b42ca4867af3b341e5d09abca4a2746;p=linux.git net: mdio: mscc-miim: Handle the switch reset The mscc-miim device can be impacted by the switch reset, at least when this device is part of the LAN966x PCI device. Handle this newly added (optional) resets property. Signed-off-by: Herve Codina Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- diff --git a/drivers/net/mdio/mdio-mscc-miim.c b/drivers/net/mdio/mdio-mscc-miim.c index c29377c85307..62c47e0dd142 100644 --- a/drivers/net/mdio/mdio-mscc-miim.c +++ b/drivers/net/mdio/mdio-mscc-miim.c @@ -19,6 +19,7 @@ #include #include #include +#include #define MSCC_MIIM_REG_STATUS 0x0 #define MSCC_MIIM_STATUS_STAT_PENDING BIT(2) @@ -271,10 +272,17 @@ static int mscc_miim_probe(struct platform_device *pdev) struct device_node *np = pdev->dev.of_node; struct regmap *mii_regmap, *phy_regmap; struct device *dev = &pdev->dev; + struct reset_control *reset; struct mscc_miim_dev *miim; struct mii_bus *bus; int ret; + reset = devm_reset_control_get_optional_shared(dev, "switch"); + if (IS_ERR(reset)) + return dev_err_probe(dev, PTR_ERR(reset), "Failed to get reset\n"); + + reset_control_reset(reset); + mii_regmap = ocelot_regmap_from_resource(pdev, 0, &mscc_miim_regmap_config); if (IS_ERR(mii_regmap))