net: phy: mv88e6xxx: add support for mv88e6250

barebox port of the linux patch:

  commit 1f71836f5d96e4c87fad16db86d324bee47e1d30
  Author: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
  Date:   Tue Jun 4 07:34:32 2019 +0000

      net: dsa: mv88e6xxx: add support for mv88e6250

      This adds support for the Marvell 88E6250. I've checked that each
      member in the ops-structure makes sense, and basic switchdev
      functionality works fine.

      It uses the new dual_chip option, and since its port registers start
      at SMI address 0x08 or 0x18 (i.e., always sw_addr + 0x08), we need to
      introduce a new compatible string in order for the auto-identification
      in mv88e6xxx_detect() to work.

      The chip has four per port 16-bits statistics registers, two of which
      correspond to the existing "sw_in_filtered" and "sw_out_filtered" (but
      at offsets 0x13 and 0x10 rather than 0x12 and 0x13, because why should
      this be easy...). Wiring up those four statistics seems to require
      introducing a STATS_TYPE_PORT_6250 bit or similar, which seems a tad
      ugly, so for now this just allows access to the STATS_TYPE_BANK0 ones.

      The chip does have ptp support, and the existing
      mv88e6352_{gpio,avb,ptp}_ops at first glance seem like they would work
      out-of-the-box, but for simplicity (and lack of testing) I'm eliding
      this.

      Reviewed-by: Andrew Lunn <andrew@lunn.ch>
      Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
      Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Link: https://lore.barebox.org/20220321131632.1307943-2-str@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 28 insertions, 0 deletions

diff --git a/drivers/net/phy/mv88e6xxx/chip.c b/drivers/net/phy/mv88e6xxx/chip.c
index ae59d134e7..a7d707095b 100644
--- a/drivers/net/phy/mv88e6xxx/chip.c
+++ b/drivers/net/phy/mv88e6xxx/chip.c
@@ -36,6 +36,7 @@ enum mv88e6xxx_model {
 	MV88E6190X,
 	MV88E6191,
 	MV88E6240,
+	MV88E6250,
 	MV88E6290,
 	MV88E6320,
 	MV88E6321,
@@ -224,6 +225,18 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.port_link_state = mv88e6352_port_link_state,
 };
 
+static const struct mv88e6xxx_ops mv88e6250_ops = {
+	/* MV88E6XXX_FAMILY_6250 */
+	.get_eeprom = mv88e6xxx_g2_get_eeprom16,
+	.set_eeprom = mv88e6xxx_g2_set_eeprom16,
+	.phy_read = mv88e6xxx_g2_smi_phy_read,
+	.phy_write = mv88e6xxx_g2_smi_phy_write,
+	.port_set_link = mv88e6xxx_port_set_link,
+	.port_set_duplex = mv88e6xxx_port_set_duplex,
+	.port_set_rgmii_delay = mv88e6352_port_set_rgmii_delay,
+	.port_set_speed = mv88e6250_port_set_speed,
+};
+
 static const struct mv88e6xxx_ops mv88e6290_ops = {
 	/* MV88E6XXX_FAMILY_6390 */
 	.get_eeprom = mv88e6xxx_g2_get_eeprom8,
@@ -525,6 +538,17 @@ static const struct mv88e6xxx_info mv88e6xxx_table[] = {
 		.ops = &mv88e6240_ops,
 	},
 
+	[MV88E6250] = {
+		.prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6250,
+		.family = MV88E6XXX_FAMILY_6250,
+		.name = "Marvell 88E6250",
+		.num_ports = 7,
+		.port_base_addr = 0x08,
+		.global1_addr = 0xf,
+		.global2_addr = 0x7,
+		.ops = &mv88e6250_ops,
+	},
+
 	[MV88E6290] = {
 		.prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6290,
 		.family = MV88E6XXX_FAMILY_6390,
@@ -932,6 +956,10 @@ static const struct of_device_id mv88e6xxx_of_match[] = {
 		.data = &mv88e6xxx_table[MV88E6085],
 	},
 	{
+		.compatible = "marvell,mv88e6250",
+		.data = &mv88e6xxx_table[MV88E6250],
+	},
+	{
 		.compatible = "marvell,mv88e6190",
 		.data = &mv88e6xxx_table[MV88E6190],
 	},