As per Linux kernel DT binding doc: - phy-reset-post-delay : Post reset delay in milliseconds. If present then a delay of phy-reset-post-delay milliseconds will be observed after the phy-reset-gpios has been toggled. Can be omitted thus no delay is observed. Delay is in range of 1ms to 1000ms. Other delays are invalid.
Signed-off-by: Andrejs Cainikovs andrejs.cainikovs@netmodule.com --- drivers/net/fec_mxc.c | 11 +++++++++++ drivers/net/fec_mxc.h | 1 + 2 files changed, 12 insertions(+)
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index a14fe43a5b..7fc95fa767 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -1315,6 +1315,8 @@ static void fec_gpio_reset(struct fec_priv *priv) dm_gpio_set_value(&priv->phy_reset_gpio, 1); mdelay(priv->reset_delay); dm_gpio_set_value(&priv->phy_reset_gpio, 0); + if (priv->reset_post_delay) + mdelay(priv->reset_post_delay); } } #endif @@ -1474,6 +1476,15 @@ static int fecmxc_ofdata_to_platdata(struct udevice *dev) /* property value wrong, use default value */ priv->reset_delay = 1; } + + priv->reset_post_delay = dev_read_u32_default(dev, + "phy-reset-post-delay", + 0); + if (priv->reset_post_delay > 1000) { + printf("FEC MXC: phy reset post delay should be <= 1000ms\n"); + /* property value wrong, use default value */ + priv->reset_post_delay = 0; + } #endif
return 0; diff --git a/drivers/net/fec_mxc.h b/drivers/net/fec_mxc.h index e9a661f0a1..e5f2dd75c5 100644 --- a/drivers/net/fec_mxc.h +++ b/drivers/net/fec_mxc.h @@ -258,6 +258,7 @@ struct fec_priv { #ifdef CONFIG_DM_GPIO struct gpio_desc phy_reset_gpio; uint32_t reset_delay; + uint32_t reset_post_delay; #endif #ifdef CONFIG_DM_ETH u32 interface;