From: Christophe Roullier christophe.roullier@st.com
Add management of property "reset-gpios" in the node identified by "phy-handle" to configure any GPIO used to reset the PHY.
Signed-off-by: Christophe Roullier christophe.roullier@st.com Reviewed-by: Patrice CHOTARD patrice.chotard@st.com Reviewed-by: Patrick DELAUNAY patrick.delaunay@st.com Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
drivers/net/dwc_eth_qos.c | 53 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+)
diff --git a/drivers/net/dwc_eth_qos.c b/drivers/net/dwc_eth_qos.c index 0564bebf76..4796659216 100644 --- a/drivers/net/dwc_eth_qos.c +++ b/drivers/net/dwc_eth_qos.c @@ -694,6 +694,29 @@ static int eqos_start_resets_tegra186(struct udevice *dev)
static int eqos_start_resets_stm32(struct udevice *dev) { + struct eqos_priv *eqos = dev_get_priv(dev); + int ret; + + debug("%s(dev=%p):\n", __func__, dev); + if (dm_gpio_is_valid(&eqos->phy_reset_gpio)) { + ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 1); + if (ret < 0) { + pr_err("dm_gpio_set_value(phy_reset, assert) failed: %d", + ret); + return ret; + } + + udelay(2); + + ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 0); + if (ret < 0) { + pr_err("dm_gpio_set_value(phy_reset, deassert) failed: %d", + ret); + return ret; + } + } + debug("%s: OK\n", __func__); + return 0; }
@@ -709,6 +732,18 @@ static int eqos_stop_resets_tegra186(struct udevice *dev)
static int eqos_stop_resets_stm32(struct udevice *dev) { + struct eqos_priv *eqos = dev_get_priv(dev); + int ret; + + if (dm_gpio_is_valid(&eqos->phy_reset_gpio)) { + ret = dm_gpio_set_value(&eqos->phy_reset_gpio, 1); + if (ret < 0) { + pr_err("dm_gpio_set_value(phy_reset, assert) failed: %d", + ret); + return ret; + } + } + return 0; }
@@ -1604,6 +1639,7 @@ static int eqos_probe_resources_stm32(struct udevice *dev) struct eqos_priv *eqos = dev_get_priv(dev); int ret; phy_interface_t interface; + struct ofnode_phandle_args phandle_args;
debug("%s(dev=%p):\n", __func__, dev);
@@ -1641,6 +1677,20 @@ static int eqos_probe_resources_stm32(struct udevice *dev) if (ret) pr_warn("No phy clock provided %d", ret);
+ ret = dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0, + &phandle_args); + if (!ret) { + /* search "reset-gpios" in phy node */ + ret = gpio_request_by_name_nodev(phandle_args.node, + "reset-gpios", 0, + &eqos->phy_reset_gpio, + GPIOD_IS_OUT | + GPIOD_IS_OUT_ACTIVE); + if (ret) + pr_warn("gpio_request_by_name(phy reset) not provided %d", + ret); + } + debug("%s: OK\n", __func__); return 0;
@@ -1704,6 +1754,9 @@ static int eqos_remove_resources_stm32(struct udevice *dev) if (clk_valid(&eqos->clk_ck)) clk_free(&eqos->clk_ck);
+ if (dm_gpio_is_valid(&eqos->phy_reset_gpio)) + dm_gpio_free(dev, &eqos->phy_reset_gpio); + debug("%s: OK\n", __func__); return 0; }