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net: fec: enable regulator for fec phy 

If bootloader or platform initialization code does not enable the
power supply to fec phy, we need to do it in fec driver before calling
fec_reset_phy to have the phy powered on.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shawn Guo 2012-06-27 03:45:21 +00:00 committed by David S. Miller
parent 2ca9b2aa0d
commit 5fa9c0fe3e
1 changed files with 13 additions and 0 deletions
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13
drivers/net/ethernet/freescale/fec.c
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@ -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>
@ -1546,6 +1547,7 @@ 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)
@ -1632,6 +1634,16 @@ 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);
@ -1655,6 +1667,7 @@ 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: