net: phy: restore mdio regs in the iproc mdio driver (6f08e98d) · Commits · 戴 / test

The mii management register in iproc mdio block does not have a retention register so it is lost on suspend. Save and restore value of register while resuming from suspend. Fixes: ("net: phy: Initialize mdio clock at probe function") Signed-off-by:

Arun Parameswaran <arun.parameswaran@broadcom.com> Signed-off-by:

Scott Branden <scott.branden@broadcom.com> Reviewed-by:

Andrew Lunn <andrew@lunn.ch> Reviewed-by:

Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-bcm-iproc.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -178,6 +178,23 @@ static int iproc_mdio_remove(struct platform_device *pdev)
		return 0;
		}

		#ifdef CONFIG_PM_SLEEP
		int iproc_mdio_resume(struct device *dev)
		{
		struct platform_device *pdev = to_platform_device(dev);
		struct iproc_mdio_priv *priv = platform_get_drvdata(pdev);

		/* restore the mii clock configuration */
		iproc_mdio_config_clk(priv->base);

		return 0;
		}

		static const struct dev_pm_ops iproc_mdio_pm_ops = {
		.resume = iproc_mdio_resume
		};
		#endif /* CONFIG_PM_SLEEP */

		static const struct of_device_id iproc_mdio_of_match[] = {
		{ .compatible = "brcm,iproc-mdio", },
		{ /* sentinel */ },
		@@ -188,6 +205,9 @@ static struct platform_driver iproc_mdio_driver = {
		.driver = {
		.name = "iproc-mdio",
		.of_match_table = iproc_mdio_of_match,
		#ifdef CONFIG_PM_SLEEP
		.pm = &iproc_mdio_pm_ops,
		#endif
		},
		.probe = iproc_mdio_probe,
		.remove = iproc_mdio_remove,

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