[PATCH 2/3] ARM: i.mx53: Parse Reset GPIO pin in FEC driver from Devicetree

[Rostislav Lisovy]

Signed-off-by: Rostislav Lisovy <lis...@gmail.com>

diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c
index 2f31352..31fb2aa 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 +674,22 @@ static int fec_probe(struct device_d *dev)
 
        fec->regs = dev_request_mem_region(dev, 0);
 
+       phy_reset = of_get_named_gpio(dev->device_node, "phy-reset-gpios", 0);
+       if (!gpio_is_valid(phy_reset)) {
+               dev_info(dev, "'phy-reset' gpio is not valid\n");
+       } else {
+               ret = gpio_request(phy_reset, "phy-reset");
+               if (ret)
+                       goto err_free;
+
+               ret = gpio_direction_output(phy_reset, 0);
+               if (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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