From edecfa98f602a597666e3c5cab2677ada38d93c5 Mon Sep 17 00:00:00 2001 From: Helmut Grohne Date: Tue, 8 Sep 2020 10:01:38 +0200 Subject: net: dsa: microchip: look for phy-mode in port nodes Documentation/devicetree/bindings/net/dsa/dsa.txt says that the phy-mode property should be specified on port nodes. However, the microchip drivers read it from the switch node. Let the driver use the per-port property and fall back to the old location with a warning. Fix in-tree users. Signed-off-by: Helmut Grohne Link: https://lore.kernel.org/netdev/20200617082235.GA1523@laureti-dev/ Acked-by: Alexandre Belloni Signed-off-by: David S. Miller --- drivers/net/dsa/microchip/ksz8795.c | 18 +++++++++++++----- drivers/net/dsa/microchip/ksz9477.c | 29 +++++++++++++++++++---------- drivers/net/dsa/microchip/ksz_common.c | 13 ++++++++++++- drivers/net/dsa/microchip/ksz_common.h | 3 ++- 4 files changed, 46 insertions(+), 17 deletions(-) (limited to 'drivers/net/dsa/microchip') diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index 8f1d15ea15d9..f7d59d7b2cbe 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -932,11 +932,19 @@ static void ksz8795_port_setup(struct ksz_device *dev, int port, bool cpu_port) ksz_port_cfg(dev, port, P_PRIO_CTRL, PORT_802_1P_ENABLE, true); if (cpu_port) { + if (!p->interface && dev->compat_interface) { + dev_warn(dev->dev, + "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. " + "Please update your device tree.\n", + port); + p->interface = dev->compat_interface; + } + /* Configure MII interface for proper network communication. */ ksz_read8(dev, REG_PORT_5_CTRL_6, &data8); data8 &= ~PORT_INTERFACE_TYPE; data8 &= ~PORT_GMII_1GPS_MODE; - switch (dev->interface) { + switch (p->interface) { case PHY_INTERFACE_MODE_MII: p->phydev.speed = SPEED_100; break; @@ -952,11 +960,11 @@ static void ksz8795_port_setup(struct ksz_device *dev, int port, bool cpu_port) default: data8 &= ~PORT_RGMII_ID_IN_ENABLE; data8 &= ~PORT_RGMII_ID_OUT_ENABLE; - if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID || - dev->interface == PHY_INTERFACE_MODE_RGMII_RXID) + if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || + p->interface == PHY_INTERFACE_MODE_RGMII_RXID) data8 |= PORT_RGMII_ID_IN_ENABLE; - if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID || - dev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || + p->interface == PHY_INTERFACE_MODE_RGMII_TXID) data8 |= PORT_RGMII_ID_OUT_ENABLE; data8 |= PORT_GMII_1GPS_MODE; data8 |= PORT_INTERFACE_RGMII; diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 3cb22d149813..2f5506ac7d19 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1208,7 +1208,7 @@ static void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port) /* configure MAC to 1G & RGMII mode */ ksz_pread8(dev, port, REG_PORT_XMII_CTRL_1, &data8); - switch (dev->interface) { + switch (p->interface) { case PHY_INTERFACE_MODE_MII: ksz9477_set_xmii(dev, 0, &data8); ksz9477_set_gbit(dev, false, &data8); @@ -1229,11 +1229,11 @@ static void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port) ksz9477_set_gbit(dev, true, &data8); data8 &= ~PORT_RGMII_ID_IG_ENABLE; data8 &= ~PORT_RGMII_ID_EG_ENABLE; - if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID || - dev->interface == PHY_INTERFACE_MODE_RGMII_RXID) + if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || + p->interface == PHY_INTERFACE_MODE_RGMII_RXID) data8 |= PORT_RGMII_ID_IG_ENABLE; - if (dev->interface == PHY_INTERFACE_MODE_RGMII_ID || - dev->interface == PHY_INTERFACE_MODE_RGMII_TXID) + if (p->interface == PHY_INTERFACE_MODE_RGMII_ID || + p->interface == PHY_INTERFACE_MODE_RGMII_TXID) data8 |= PORT_RGMII_ID_EG_ENABLE; p->phydev.speed = SPEED_1000; break; @@ -1269,23 +1269,32 @@ static void ksz9477_config_cpu_port(struct dsa_switch *ds) dev->cpu_port = i; dev->host_mask = (1 << dev->cpu_port); dev->port_mask |= dev->host_mask; + p = &dev->ports[i]; /* Read from XMII register to determine host port * interface. If set specifically in device tree * note the difference to help debugging. */ interface = ksz9477_get_interface(dev, i); - if (!dev->interface) - dev->interface = interface; - if (interface && interface != dev->interface) + if (!p->interface) { + if (dev->compat_interface) { + dev_warn(dev->dev, + "Using legacy switch \"phy-mode\" property, because it is missing on port %d node. " + "Please update your device tree.\n", + i); + p->interface = dev->compat_interface; + } else { + p->interface = interface; + } + } + if (interface && interface != p->interface) dev_info(dev->dev, "use %s instead of %s\n", - phy_modes(dev->interface), + phy_modes(p->interface), phy_modes(interface)); /* enable cpu port */ ksz9477_port_setup(dev, i, true); - p = &dev->ports[dev->cpu_port]; p->vid_member = dev->port_mask; p->on = 1; } diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 8d53b12d40a8..8e755b50c9c1 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -388,6 +388,8 @@ int ksz_switch_register(struct ksz_device *dev, const struct ksz_dev_ops *ops) { phy_interface_t interface; + struct device_node *port; + unsigned int port_num; int ret; if (dev->pdata) @@ -421,10 +423,19 @@ int ksz_switch_register(struct ksz_device *dev, /* Host port interface will be self detected, or specifically set in * device tree. */ + for (port_num = 0; port_num < dev->port_cnt; ++port_num) + dev->ports[port_num].interface = PHY_INTERFACE_MODE_NA; if (dev->dev->of_node) { ret = of_get_phy_mode(dev->dev->of_node, &interface); if (ret == 0) - dev->interface = interface; + dev->compat_interface = interface; + for_each_available_child_of_node(dev->dev->of_node, port) { + if (of_property_read_u32(port, "reg", &port_num)) + continue; + if (port_num >= dev->port_cnt) + return -EINVAL; + of_get_phy_mode(port, &dev->ports[port_num].interface); + } dev->synclko_125 = of_property_read_bool(dev->dev->of_node, "microchip,synclko-125"); } diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index 206838160f49..cf866e48ff66 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -39,6 +39,7 @@ struct ksz_port { u32 freeze:1; /* MIB counter freeze is enabled */ struct ksz_port_mib mib; + phy_interface_t interface; }; struct ksz_device { @@ -72,7 +73,7 @@ struct ksz_device { int mib_cnt; int mib_port_cnt; int last_port; /* ports after that not used */ - phy_interface_t interface; + phy_interface_t compat_interface; u32 regs_size; bool phy_errata_9477; bool synclko_125; -- cgit v1.2.3-58-ga151 From fd944dc24336922656a48f4608bfb41abdcdc4aa Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Wed, 16 Sep 2020 12:08:39 +0200 Subject: net: dsa: microchip: ksz8795: really set the correct number of ports The KSZ9477 and KSZ8795 use the port_cnt field differently: For the KSZ9477, it includes the CPU port(s), while for the KSZ8795, it doesn't. It would be a good cleanup to make the handling of both drivers match, but as a first step, fix the recently broken assignment of num_ports in the KSZ8795 driver (which completely broke probing, as the CPU port index was always failing the num_ports check). Fixes: af199a1a9cb0 ("net: dsa: microchip: set the correct number of ports") Signed-off-by: Matthias Schiffer Reviewed-by: Codrin Ciubotariu Signed-off-by: David S. Miller --- drivers/net/dsa/microchip/ksz8795.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/dsa/microchip') diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index f7d59d7b2cbe..f5779e152377 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1260,7 +1260,7 @@ static int ksz8795_switch_init(struct ksz_device *dev) } /* set the real number of ports */ - dev->ds->num_ports = dev->port_cnt; + dev->ds->num_ports = dev->port_cnt + 1; return 0; } -- cgit v1.2.3-58-ga151