Signed-off-by: Rostislav Lisovy <[email protected]> diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c index 2f31352..9855e8c 100644 --- a/drivers/net/fec_imx.c +++ b/drivers/net/fec_imx.c @@ -27,6 +27,8 @@ #include <linux/clk.h> #include <linux/err.h> #include <of_net.h> +#include <of_gpio.h> +#include <gpio.h> #include <asm/mmu.h> @@ -643,6 +645,7 @@ static int fec_probe(struct device_d *dev) void *base; int ret; enum fec_type type; + int phy_reset; ret = dev_get_drvdata(dev, (unsigned long *)&type); if (ret) @@ -671,6 +674,36 @@ static int fec_probe(struct device_d *dev) fec->regs = dev_request_mem_region(dev, 0); + if (IS_ENABLED(CONFIG_OFDEVICE)) { + phy_reset = of_get_named_gpio(dev->device_node, "phy-reset-gpios", 0); + if (phy_reset < 0) { + pr_info("%s: 'phy-reset-gpios' not used. Skipping hardware PHY reset.\n", __func__); + } else { + if (!gpio_is_valid(phy_reset)) { + pr_err("%s: 'phy-reset' gpio is not valid:\n", + __func__); + goto err_free; + } + + ret = gpio_request(phy_reset, "phy-reset"); + if (ret) { + pr_err("%s: can not request gpio %d (phy-reset): %d\n", + __func__, phy_reset, ret); + goto err_free; + } + + ret = gpio_direction_output(phy_reset, 0); + if (ret) { + pr_err("%s: can not set gpio %d (phy-reset) direction: %d\n", + __func__, phy_reset, ret); + goto err_free; + } + + udelay(10); + gpio_set_value(phy_reset, 1); + } + } + /* Reset chip. */ writel(FEC_ECNTRL_RESET, fec->regs + FEC_ECNTRL); while(readl(fec->regs + FEC_ECNTRL) & 1) { -- 1.7.10.4
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