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net: dm: fec: Support phy-reset-post-delay property

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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>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Andrejs Cainikovs 2019-03-01 13:27:59 +00:00 committed by Anatolij Gustschin
parent afbc31948a
commit 31d4045d4b
2 changed files with 12 additions and 0 deletions
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11
drivers/net/fec_mxc.c
View File

@ -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;

1
drivers/net/fec_mxc.h
View File

@ -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;