From 31d4045d4be8263828689c7eb6ff4e72071ad5ce Mon Sep 17 00:00:00 2001 From: Andrejs Cainikovs Date: Fri, 1 Mar 2019 13:27:59 +0000 Subject: net: dm: fec: Support phy-reset-post-delay property 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 Reviewed-by: Anatolij Gustschin Reviewed-by: Stefano Babic Acked-by: Joe Hershberger Acked-by: Lukasz Majewski --- drivers/net/fec_mxc.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/net/fec_mxc.c') diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index f991b40b38..84f010d805 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -1309,6 +1309,8 @@ 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 @@ -1468,6 +1470,15 @@ 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; -- cgit v1.2.3