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net: dwc_eth_qos: add support for phy-reset-gpios property

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This commit adds support for a property 'phy-reset-gpios' to reset PHY
chipset.

Signed-off-by: Heesub Shin <heesub@gmail.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Heesub Shin
2024-04-28 23:24:05 +09:00
committed by Patrice Chotard
parent 2ec88086c9
commit 0da5d2243e
1 changed files with 22 additions and 1 deletions
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23
drivers/net/dwc_eth_qos_stm32.c
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@@ -266,6 +266,12 @@ static int eqos_probe_resources_stm32(struct udevice *dev)
if (ret)
dev_warn(dev, "No phy clock provided %d\n", ret);
/* Get reset gpio pin (optional) */
ret = gpio_request_by_name(dev, "phy-reset-gpios", 0,
&eqos->phy_reset_gpio, GPIOD_IS_OUT);
if (ret)
pr_warn("No phy reset gpio provided: %d\n", ret);
dev_dbg(dev, "%s: OK\n", __func__);
return 0;
@@ -277,6 +283,21 @@ err_probe:
return ret;
}
static int eqos_start_resets_stm32(struct udevice *dev)
{
struct eqos_priv *eqos = dev_get_priv(dev);
debug("%s(dev=%p):\n", __func__, dev);
if (dm_gpio_is_valid(&eqos->phy_reset_gpio)) {
dm_gpio_set_value(&eqos->phy_reset_gpio, 1);
udelay(2);
dm_gpio_set_value(&eqos->phy_reset_gpio, 0);
}
return 0;
}
static int eqos_remove_resources_stm32(struct udevice *dev)
{
dev_dbg(dev, "%s:\n", __func__);
@@ -292,7 +313,7 @@ static struct eqos_ops eqos_stm32_ops = {
.eqos_probe_resources = eqos_probe_resources_stm32,
.eqos_remove_resources = eqos_remove_resources_stm32,
.eqos_stop_resets = eqos_null_ops,
.eqos_start_resets = eqos_null_ops,
.eqos_start_resets = eqos_start_resets_stm32,
.eqos_stop_clks = eqos_stop_clks_stm32,
.eqos_start_clks = eqos_start_clks_stm32,
.eqos_calibrate_pads = eqos_null_ops,