@@ -54,5 +54,9 @@ int ksz8_reset_switch(struct ksz_device *dev);
int ksz8_switch_init(struct ksz_device *dev);
void ksz8_switch_exit(struct ksz_device *dev);
int ksz8_change_mtu(struct ksz_device *dev, int port, int mtu);
+void ksz8_phylink_mac_link_up(struct ksz_device *dev, int port,
+ unsigned int mode, phy_interface_t interface,
+ struct phy_device *phydev, int speed, int duplex,
+ bool tx_pause, bool rx_pause);
#endif
@@ -1528,6 +1528,57 @@ void ksz8_config_cpu_port(struct dsa_switch *ds)
}
}
+/**
+ * ksz8_cpu_port_link_up - Configures the CPU port of the switch.
+ * @dev: The KSZ device instance.
+ * @speed: The desired link speed.
+ * @duplex: The desired duplex mode.
+ * @tx_pause: If true, enables transmit pause.
+ * @rx_pause: If true, enables receive pause.
+ *
+ * Description:
+ * The function configures flow control and speed settings for the CPU
+ * port of the switch based on the desired settings, current duplex mode, and
+ * speed.
+ */
+static void ksz8_cpu_port_link_up(struct ksz_device *dev, int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ const u16 *regs = dev->info->regs;
+ u8 ctrl = 0;
+
+ /* SW_FLOW_CTRL, SW_HALF_DUPLEX, and SW_10_MBIT bits are bootstrappable
+ * at least on KSZ8873. They can have different values depending on your
+ * board setup.
+ */
+ if (tx_pause || rx_pause)
+ ctrl |= SW_FLOW_CTRL;
+
+ if (duplex == DUPLEX_HALF)
+ ctrl |= SW_HALF_DUPLEX;
+
+ /* This hardware only supports SPEED_10 and SPEED_100. For SPEED_10
+ * we need to set the SW_10_MBIT bit. Otherwise, we can leave it 0.
+ */
+ if (speed == SPEED_10)
+ ctrl |= SW_10_MBIT;
+
+ ksz_rmw8(dev, regs[S_BROADCAST_CTRL], SW_HALF_DUPLEX | SW_FLOW_CTRL |
+ SW_10_MBIT, ctrl);
+}
+
+void ksz8_phylink_mac_link_up(struct ksz_device *dev, int port,
+ unsigned int mode, phy_interface_t interface,
+ struct phy_device *phydev, int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ /* If the port is the CPU port, apply special handling. Only the CPU
+ * port is configured via global registers.
+ */
+ if (dev->cpu_port == port)
+ ksz8_cpu_port_link_up(dev, speed, duplex, tx_pause, rx_pause);
+}
+
static int ksz8_handle_global_errata(struct dsa_switch *ds)
{
struct ksz_device *dev = ds->priv;
@@ -1576,8 +1627,6 @@ int ksz8_setup(struct dsa_switch *ds)
*/
ds->vlan_filtering_is_global = true;
- ksz_cfg(dev, S_REPLACE_VID_CTRL, SW_FLOW_CTRL, true);
-
/* Enable automatic fast aging when link changed detected. */
ksz_cfg(dev, S_LINK_AGING_CTRL, SW_LINK_AUTO_AGING, true);
@@ -277,6 +277,7 @@ static const struct ksz_dev_ops ksz8_dev_ops = {
.mirror_add = ksz8_port_mirror_add,
.mirror_del = ksz8_port_mirror_del,
.get_caps = ksz8_get_caps,
+ .phylink_mac_link_up = ksz8_phylink_mac_link_up,
.config_cpu_port = ksz8_config_cpu_port,
.enable_stp_addr = ksz8_enable_stp_addr,
.reset = ksz8_reset_switch,