diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/fec.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/fec.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index ff7f4c5115a1..fffd20528b5d 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -49,6 +49,7 @@ #include <linux/of_gpio.h> #include <linux/of_net.h> #include <linux/pinctrl/consumer.h> +#include <linux/regulator/consumer.h> #include <asm/cacheflush.h> @@ -1388,8 +1389,8 @@ fec_set_mac_address(struct net_device *ndev, void *p) } #ifdef CONFIG_NET_POLL_CONTROLLER -/* - * fec_poll_controller: FEC Poll controller function +/** + * fec_poll_controller - FEC Poll controller function * @dev: The FEC network adapter * * Polled functionality used by netconsole and others in non interrupt mode @@ -1506,18 +1507,25 @@ static int __devinit fec_get_phy_mode_dt(struct platform_device *pdev) static void __devinit fec_reset_phy(struct platform_device *pdev) { int err, phy_reset; + int msec = 1; struct device_node *np = pdev->dev.of_node; if (!np) return; + of_property_read_u32(np, "phy-reset-duration", &msec); + /* A sane reset duration should not be longer than 1s */ + if (msec > 1000) + msec = 1; + phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0); - err = gpio_request_one(phy_reset, GPIOF_OUT_INIT_LOW, "phy-reset"); + err = devm_gpio_request_one(&pdev->dev, phy_reset, + GPIOF_OUT_INIT_LOW, "phy-reset"); if (err) { pr_debug("FEC: failed to get gpio phy-reset: %d\n", err); return; } - msleep(1); + msleep(msec); gpio_set_value(phy_reset, 1); } #else /* CONFIG_OF */ @@ -1546,6 +1554,7 @@ fec_probe(struct platform_device *pdev) const struct of_device_id *of_id; static int dev_id; struct pinctrl *pinctrl; + struct regulator *reg_phy; of_id = of_match_device(fec_dt_ids, &pdev->dev); if (of_id) @@ -1593,8 +1602,6 @@ fec_probe(struct platform_device *pdev) fep->phy_interface = ret; } - fec_reset_phy(pdev); - for (i = 0; i < FEC_IRQ_NUM; i++) { irq = platform_get_irq(pdev, i); if (irq < 0) { @@ -1634,6 +1641,18 @@ fec_probe(struct platform_device *pdev) clk_prepare_enable(fep->clk_ahb); clk_prepare_enable(fep->clk_ipg); + reg_phy = devm_regulator_get(&pdev->dev, "phy"); + if (!IS_ERR(reg_phy)) { + ret = regulator_enable(reg_phy); + if (ret) { + dev_err(&pdev->dev, + "Failed to enable phy regulator: %d\n", ret); + goto failed_regulator; + } + } + + fec_reset_phy(pdev); + ret = fec_enet_init(ndev); if (ret) goto failed_init; @@ -1655,6 +1674,7 @@ failed_register: fec_enet_mii_remove(fep); failed_mii_init: failed_init: +failed_regulator: clk_disable_unprepare(fep->clk_ahb); clk_disable_unprepare(fep->clk_ipg); failed_pin: |