diff options
| author |   Tristram Ha <tristram.ha@microchip.com> | 2025-07-24 17:17:52 -0700 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-07-25 17:01:56 -0700 |
| commit | 006983e59755ea774c52468e9c13d360794be81e (patch) | |
| tree | 65e3977c70c53730f33d128f69b7360e46bc5766 | |
| parent | net: dsa: microchip: Write switch MAC address differently for KSZ8463 (diff) | |
| download | wireguard-linux-006983e59755ea774c52468e9c13d360794be81e.tar.xz wireguard-linux-006983e59755ea774c52468e9c13d360794be81e.zip | |
net: dsa: microchip: Setup fiber ports for KSZ8463
The fiber ports in KSZ8463 cannot be detected internally, so it requires
specifying that condition in the device tree. Like the one used in
Micrel PHY the port link can only be read and there is no write to the
PHY. The driver programs registers to operate fiber ports correctly.
Signed-off-by: Tristram Ha <tristram.ha@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250725001753.6330-6-Tristram.Ha@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/dsa/microchip/ksz8.c | 16 | ||||
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_common.c | 3 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz8.c b/drivers/net/dsa/microchip/ksz8.c index 55c1460b8b2e..62224426a9bd 100644 --- a/drivers/net/dsa/microchip/ksz8.c +++ b/drivers/net/dsa/microchip/ksz8.c @@ -1714,6 +1714,7 @@ void ksz8_config_cpu_port(struct dsa_switch *ds) const u32 *masks; const u16 *regs; u8 remote; + u8 fiber_ports = 0; int i; masks = dev->info->masks; @@ -1744,6 +1745,21 @@ void ksz8_config_cpu_port(struct dsa_switch *ds) else ksz_port_cfg(dev, i, regs[P_STP_CTRL], PORT_FORCE_FLOW_CTRL, false); + if (p->fiber) + fiber_ports |= (1 << i); + } + if (ksz_is_ksz8463(dev)) { + /* Setup fiber ports. */ + if (fiber_ports) { + fiber_ports &= 3; + regmap_update_bits(ksz_regmap_16(dev), + KSZ8463_REG_CFG_CTRL, + fiber_ports << PORT_COPPER_MODE_S, + 0); + regmap_update_bits(ksz_regmap_16(dev), + KSZ8463_REG_DSP_CTRL_6, + COPPER_RECEIVE_ADJUSTMENT, 0); + } } } diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index e47c4a5aad6f..7292bfe2f7ca 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -5439,6 +5439,9 @@ int ksz_switch_register(struct ksz_device *dev) &dev->ports[port_num].interface); ksz_parse_rgmii_delay(dev, port_num, port); + dev->ports[port_num].fiber = + of_property_read_bool(port, + "micrel,fiber-mode"); } of_node_put(ports); } |