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authorShawn Guo <shawn.guo@linaro.org>2012-06-27 03:45:24 +0000
committerDavid S. Miller <davem@davemloft.net>2012-06-27 21:22:06 -0700
commita3caad0a160c03b7238a2518fa89abda78adef1e (patch)
tree117a390c87e7a69cf1b469e4225c5c7414198cf6 /drivers
parentc9040af264de8a425b0efabfcc18a6ce47d0f21f (diff)
downloadop-kernel-dev-a3caad0a160c03b7238a2518fa89abda78adef1e.zip
op-kernel-dev-a3caad0a160c03b7238a2518fa89abda78adef1e.tar.gz
net: fec: add phy-reset-duration for device tree probe
Different boards may require different phy reset duration. Add property phy-reset-duration for device tree probe, so that the boards that need a longer reset duration can specify it in their device tree. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/freescale/fec.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index f174070..dafd797 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -1507,11 +1507,17 @@ 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 = devm_gpio_request_one(&pdev->dev, phy_reset,
GPIOF_OUT_INIT_LOW, "phy-reset");
@@ -1519,7 +1525,7 @@ static void __devinit fec_reset_phy(struct platform_device *pdev)
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 */
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