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net: fec: enable regulator for fec phy

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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
View file

@ -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: