diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2017-06-07 12:34:21 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-06-07 13:54:49 +0200 |
| commit | cd79610404ef65fc77cac3359cb9b9f4c1d87b39 (patch) | |
| tree | cf36bbddde7121bb2c93aaf2ff59e2a58a6de4ea /drivers | |
| parent | 83538c10291d0e93de954d2b18887981c72df620 (diff) | |
| download | barebox-cd79610404ef65fc77cac3359cb9b9f4c1d87b39.tar.gz barebox-cd79610404ef65fc77cac3359cb9b9f4c1d87b39.tar.xz | |
i.MX: fec: add post PHY reset delay DT property
Some PHY require to wait for a bit after the reset GPIO has been
toggled. This adds support for the DT property `phy-reset-post-delay`
which gives the delay in milliseconds to wait after reset.
If the DT property is not given, no delay is observed. Post reset
delay greater than 1000ms are invalid.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/fec_imx.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/net/fec_imx.c b/drivers/net/fec_imx.c index 8cf7c4fbda..d506fd64f1 100644 --- a/drivers/net/fec_imx.c +++ b/drivers/net/fec_imx.c @@ -743,7 +743,7 @@ static int fec_probe(struct device_d *dev) int ret; enum fec_type type; int phy_reset; - u32 msec = 1; + u32 msec = 1, phy_post_delay = 0; u64 start; ret = dev_get_drvdata(dev, (const void **)&type); @@ -781,6 +781,11 @@ static int fec_probe(struct device_d *dev) phy_reset = of_get_named_gpio(dev->device_node, "phy-reset-gpios", 0); if (gpio_is_valid(phy_reset)) { of_property_read_u32(dev->device_node, "phy-reset-duration", &msec); + of_property_read_u32(dev->device_node, "phy-reset-post-delay", + &phy_post_delay); + /* valid reset duration should be less than 1s */ + if (phy_post_delay > 1000) + goto release_res; ret = gpio_request(phy_reset, "phy-reset"); if (ret) @@ -792,6 +797,9 @@ static int fec_probe(struct device_d *dev) mdelay(msec); gpio_set_value(phy_reset, 1); + + if (phy_post_delay) + mdelay(phy_post_delay); } /* Reset chip. */ |