This patch introduces ast2400/2500 phy-handle support with an embedded
MDIO controller. At the current moment it is not possible to set options
with this format on ast2400/2500:
mac {
phy-handle = <&phy>;
phy-mode = "rgmii";
mdio {
#address-cells = <1>;
#size-cells = <0>;
phy: ethernet-phy@0 {
compatible = "ethernet-phy-idxxxx.yyyy";
reg = <0>;
};
};
};
The patch fixes it and gets possible PHYs and register them with
of_mdiobus_register.
Changes from v3:
1. add dt-bindings description of MDIO node and phy-handle option
with example.
Changes from v2:
1. change manual phy interface type check on phy_interface_mode_is_rgmii
function.
2. add err_phy_connect label.
3. split ftgmac100_destroy_mdio into ftgmac100_phy_disconnect and
ftgmac100_destroy_mdio.
4. remove unneeded mdio_np checks.
Changes from v1:
1. split one patch into two.
Ivan Mikhaylov (3):
net: ftgmac100: move phy connect out from ftgmac100_setup_mdio
net: ftgmac100: add handling of mdio/phy nodes for ast2400/2500
dt-bindings: net: ftgmac100: describe phy-handle and MDIO
.../devicetree/bindings/net/ftgmac100.txt | 25 ++++
drivers/net/ethernet/faraday/ftgmac100.c | 122 ++++++++++--------
2 files changed, 96 insertions(+), 51 deletions(-)
--
2.21.1
Add the phy-handle and MDIO description and add the example with
PHY and MDIO nodes.
Signed-off-by: Ivan Mikhaylov <[email protected]>
---
.../devicetree/bindings/net/ftgmac100.txt | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/ftgmac100.txt b/Documentation/devicetree/bindings/net/ftgmac100.txt
index f878c1103463..accb1b1e07b3 100644
--- a/Documentation/devicetree/bindings/net/ftgmac100.txt
+++ b/Documentation/devicetree/bindings/net/ftgmac100.txt
@@ -15,6 +15,7 @@ Required properties:
- interrupts: Should contain ethernet controller interrupt
Optional properties:
+- phy-handle: See ethernet.txt file in the same directory.
- phy-mode: See ethernet.txt file in the same directory. If the property is
absent, "rgmii" is assumed. Supported values are "rgmii*" and "rmii" for
aspeed parts. Other (unknown) parts will accept any value.
@@ -32,6 +33,9 @@ Optional properties:
- "MACCLK": The MAC IP clock
- "RCLK": Clock gate for the RMII RCLK
+Optional subnodes:
+- mdio: See mdio.txt file in the same directory.
+
Example:
mac0: ethernet@1e660000 {
@@ -40,3 +44,24 @@ Example:
interrupts = <2>;
use-ncsi;
};
+
+Example with phy-handle:
+
+ mac1: ethernet@1e680000 {
+ compatible = "aspeed,ast2500-mac", "faraday,ftgmac100";
+ reg = <0x1e680000 0x180>;
+ interrupts = <2>;
+
+ phy-handle = <&phy>;
+ phy-mode = "rgmii";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ phy: ethernet-phy@1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+ };
+ };
--
2.21.1
Split MDIO registration and PHY connect into ftgmac100_setup_mdio and
ftgmac100_mii_probe.
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: Ivan Mikhaylov <[email protected]>
---
drivers/net/ethernet/faraday/ftgmac100.c | 104 ++++++++++++-----------
1 file changed, 54 insertions(+), 50 deletions(-)
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index 87236206366f..ffad79050713 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1044,10 +1044,39 @@ static void ftgmac100_adjust_link(struct net_device *netdev)
schedule_work(&priv->reset_task);
}
-static int ftgmac100_mii_probe(struct ftgmac100 *priv, phy_interface_t intf)
+static int ftgmac100_mii_probe(struct net_device *netdev)
{
- struct net_device *netdev = priv->netdev;
+ struct ftgmac100 *priv = netdev_priv(netdev);
+ struct platform_device *pdev = to_platform_device(priv->dev);
+ struct device_node *np = pdev->dev.of_node;
struct phy_device *phydev;
+ phy_interface_t phy_intf;
+ int err;
+
+ /* Default to RGMII. It's a gigabit part after all */
+ err = of_get_phy_mode(np, &phy_intf);
+ if (err)
+ phy_intf = PHY_INTERFACE_MODE_RGMII;
+
+ /* Aspeed only supports these. I don't know about other IP
+ * block vendors so I'm going to just let them through for
+ * now. Note that this is only a warning if for some obscure
+ * reason the DT really means to lie about it or it's a newer
+ * part we don't know about.
+ *
+ * On the Aspeed SoC there are additionally straps and SCU
+ * control bits that could tell us what the interface is
+ * (or allow us to configure it while the IP block is held
+ * in reset). For now I chose to keep this driver away from
+ * those SoC specific bits and assume the device-tree is
+ * right and the SCU has been configured properly by pinmux
+ * or the firmware.
+ */
+ if (priv->is_aspeed && !(phy_interface_mode_is_rgmii(phy_intf))) {
+ netdev_warn(netdev,
+ "Unsupported PHY mode %s !\n",
+ phy_modes(phy_intf));
+ }
phydev = phy_find_first(priv->mii_bus);
if (!phydev) {
@@ -1056,7 +1085,7 @@ static int ftgmac100_mii_probe(struct ftgmac100 *priv, phy_interface_t intf)
}
phydev = phy_connect(netdev, phydev_name(phydev),
- &ftgmac100_adjust_link, intf);
+ &ftgmac100_adjust_link, phy_intf);
if (IS_ERR(phydev)) {
netdev_err(netdev, "%s: Could not attach to PHY\n", netdev->name);
@@ -1601,7 +1630,6 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
struct platform_device *pdev = to_platform_device(priv->dev);
- phy_interface_t phy_intf = PHY_INTERFACE_MODE_RGMII;
struct device_node *np = pdev->dev.of_node;
int i, err = 0;
u32 reg;
@@ -1623,39 +1651,6 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
iowrite32(reg, priv->base + FTGMAC100_OFFSET_REVR);
}
- /* Get PHY mode from device-tree */
- if (np) {
- /* Default to RGMII. It's a gigabit part after all */
- err = of_get_phy_mode(np, &phy_intf);
- if (err)
- phy_intf = PHY_INTERFACE_MODE_RGMII;
-
- /* Aspeed only supports these. I don't know about other IP
- * block vendors so I'm going to just let them through for
- * now. Note that this is only a warning if for some obscure
- * reason the DT really means to lie about it or it's a newer
- * part we don't know about.
- *
- * On the Aspeed SoC there are additionally straps and SCU
- * control bits that could tell us what the interface is
- * (or allow us to configure it while the IP block is held
- * in reset). For now I chose to keep this driver away from
- * those SoC specific bits and assume the device-tree is
- * right and the SCU has been configured properly by pinmux
- * or the firmware.
- */
- if (priv->is_aspeed &&
- phy_intf != PHY_INTERFACE_MODE_RMII &&
- phy_intf != PHY_INTERFACE_MODE_RGMII &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_ID &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_RXID &&
- phy_intf != PHY_INTERFACE_MODE_RGMII_TXID) {
- netdev_warn(netdev,
- "Unsupported PHY mode %s !\n",
- phy_modes(phy_intf));
- }
- }
-
priv->mii_bus->name = "ftgmac100_mdio";
snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s-%d",
pdev->name, pdev->id);
@@ -1673,29 +1668,28 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
goto err_register_mdiobus;
}
- err = ftgmac100_mii_probe(priv, phy_intf);
- if (err) {
- dev_err(priv->dev, "MII Probe failed!\n");
- goto err_mii_probe;
- }
-
return 0;
-err_mii_probe:
- mdiobus_unregister(priv->mii_bus);
err_register_mdiobus:
mdiobus_free(priv->mii_bus);
return err;
}
+static void ftgmac100_phy_disconnect(struct net_device *netdev)
+{
+ if (!netdev->phydev)
+ return;
+
+ phy_disconnect(netdev->phydev);
+}
+
static void ftgmac100_destroy_mdio(struct net_device *netdev)
{
struct ftgmac100 *priv = netdev_priv(netdev);
- if (!netdev->phydev)
+ if (!priv->mii_bus)
return;
- phy_disconnect(netdev->phydev);
mdiobus_unregister(priv->mii_bus);
mdiobus_free(priv->mii_bus);
}
@@ -1825,14 +1819,14 @@ static int ftgmac100_probe(struct platform_device *pdev)
if (np && of_get_property(np, "use-ncsi", NULL)) {
if (!IS_ENABLED(CONFIG_NET_NCSI)) {
dev_err(&pdev->dev, "NCSI stack not enabled\n");
- goto err_ncsi_dev;
+ goto err_phy_connect;
}
dev_info(&pdev->dev, "Using NCSI interface\n");
priv->use_ncsi = true;
priv->ndev = ncsi_register_dev(netdev, ftgmac100_ncsi_handler);
if (!priv->ndev)
- goto err_ncsi_dev;
+ goto err_phy_connect;
} else if (np && of_get_property(np, "phy-handle", NULL)) {
struct phy_device *phy;
@@ -1860,12 +1854,19 @@ static int ftgmac100_probe(struct platform_device *pdev)
err = ftgmac100_setup_mdio(netdev);
if (err)
goto err_setup_mdio;
+
+ err = ftgmac100_mii_probe(netdev);
+ if (err) {
+ dev_err(priv->dev, "MII probe failed!\n");
+ goto err_ncsi_dev;
+ }
+
}
if (priv->is_aspeed) {
err = ftgmac100_setup_clk(priv);
if (err)
- goto err_ncsi_dev;
+ goto err_phy_connect;
}
/* Default ring sizes */
@@ -1901,6 +1902,8 @@ static int ftgmac100_probe(struct platform_device *pdev)
err_register_netdev:
clk_disable_unprepare(priv->rclk);
clk_disable_unprepare(priv->clk);
+err_phy_connect:
+ ftgmac100_phy_disconnect(netdev);
err_ncsi_dev:
ftgmac100_destroy_mdio(netdev);
err_setup_mdio:
@@ -1931,6 +1934,7 @@ static int ftgmac100_remove(struct platform_device *pdev)
*/
cancel_work_sync(&priv->reset_task);
+ ftgmac100_phy_disconnect(netdev);
ftgmac100_destroy_mdio(netdev);
iounmap(priv->base);
--
2.21.1
phy-handle can't be handled well for ast2400/2500 which has an embedded
MDIO controller. Add ftgmac100_mdio_setup for ast2400/2500 and initialize
PHYs from mdio child node with of_mdiobus_register.
Signed-off-by: Ivan Mikhaylov <[email protected]>
---
drivers/net/ethernet/faraday/ftgmac100.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index ffad79050713..62bafd4b22e1 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -1631,6 +1631,7 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
struct ftgmac100 *priv = netdev_priv(netdev);
struct platform_device *pdev = to_platform_device(priv->dev);
struct device_node *np = pdev->dev.of_node;
+ struct device_node *mdio_np;
int i, err = 0;
u32 reg;
@@ -1662,12 +1663,16 @@ static int ftgmac100_setup_mdio(struct net_device *netdev)
for (i = 0; i < PHY_MAX_ADDR; i++)
priv->mii_bus->irq[i] = PHY_POLL;
- err = mdiobus_register(priv->mii_bus);
+ mdio_np = of_get_child_by_name(np, "mdio");
+
+ err = of_mdiobus_register(priv->mii_bus, mdio_np);
if (err) {
dev_err(priv->dev, "Cannot register MDIO bus!\n");
goto err_register_mdiobus;
}
+ of_node_put(mdio_np);
+
return 0;
err_register_mdiobus:
@@ -1830,11 +1835,22 @@ static int ftgmac100_probe(struct platform_device *pdev)
} else if (np && of_get_property(np, "phy-handle", NULL)) {
struct phy_device *phy;
+ /* Support "mdio"/"phy" child nodes for ast2400/2500 with
+ * an embedded MDIO controller. Automatically scan the DTS for
+ * available PHYs and register them.
+ */
+ if (of_device_is_compatible(np, "aspeed,ast2400-mac") ||
+ of_device_is_compatible(np, "aspeed,ast2500-mac")) {
+ err = ftgmac100_setup_mdio(netdev);
+ if (err)
+ goto err_setup_mdio;
+ }
+
phy = of_phy_get_and_connect(priv->netdev, np,
&ftgmac100_adjust_link);
if (!phy) {
dev_err(&pdev->dev, "Failed to connect to phy\n");
- goto err_setup_mdio;
+ goto err_phy_connect;
}
/* Indicate that we support PAUSE frames (see comment in
--
2.21.1
On Fri, Oct 30, 2020 at 04:37:07PM +0300, Ivan Mikhaylov wrote:
> Add the phy-handle and MDIO description and add the example with
> PHY and MDIO nodes.
>
> Signed-off-by: Ivan Mikhaylov <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On Fri, Oct 30, 2020 at 04:37:06PM +0300, Ivan Mikhaylov wrote:
> phy-handle can't be handled well for ast2400/2500 which has an embedded
> MDIO controller. Add ftgmac100_mdio_setup for ast2400/2500 and initialize
> PHYs from mdio child node with of_mdiobus_register.
>
> Signed-off-by: Ivan Mikhaylov <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On Fri, 30 Oct 2020 16:37:04 +0300 Ivan Mikhaylov wrote:
> This patch introduces ast2400/2500 phy-handle support with an embedded
> MDIO controller. At the current moment it is not possible to set options
> with this format on ast2400/2500:
>
> mac {
> phy-handle = <&phy>;
> phy-mode = "rgmii";
>
> mdio {
> #address-cells = <1>;
> #size-cells = <0>;
>
> phy: ethernet-phy@0 {
> compatible = "ethernet-phy-idxxxx.yyyy";
> reg = <0>;
> };
> };
> };
>
> The patch fixes it and gets possible PHYs and register them with
> of_mdiobus_register.
Applied, thanks!