Commit 9e6d3393 authored by Herve Codina's avatar Herve Codina Committed by David S. Miller
Browse files

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: default avatarHerve Codina <herve.codina@bootlin.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e5efa3ff

drivers/net/mdio/mdio-mscc-miim.c

+8 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/platform_device.h>

#include <linux/property.h>

#include <linux/regmap.h>

#include <linux/reset.h>



#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))