[PATCH v4 2/3] net: dsa: mv88e6xxx: add support for MV88E6020 switch

[Lukasz Majewski]

From: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx>

A mv88e6250 family (i.e. LinkStreet) switch with 2 PHY and RMII ports
and no PTP support.

Signed-off-by: Matthias Schiffer <matthias.schiffer@xxxxxxxxxxxxxxx>
Signed-off-by: Lukasz Majewski <lukma@xxxxxxx>
---
Changes for v2:
- Add S-o-B
- Update commit message
- Add information about max packet size (2048 B)

Changes for v3:
- None

Changes for v4:
- Update the num_ports and num_internal_phys to be in sync with
  88e6020 documentation
---
 drivers/net/dsa/mv88e6xxx/chip.c | 21 +++++++++++++++++++++
 drivers/net/dsa/mv88e6xxx/chip.h |  1 +
 drivers/net/dsa/mv88e6xxx/port.h |  1 +
 3 files changed, 23 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index fc6d98c4a029..fb9b362c2a50 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -5533,6 +5533,27 @@ static const struct mv88e6xxx_ops mv88e6393x_ops = {
 };
 
 static const struct mv88e6xxx_info mv88e6xxx_table[] = {
+	[MV88E6020] = {
+		.prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6020,
+		.family = MV88E6XXX_FAMILY_6250,
+		.name = "Marvell 88E6020",
+		.num_databases = 64,
+		.num_ports = 4,
+		.num_internal_phys = 2,
+		.max_vid = 4095,
+		.max_frame_size = 2048,
+		.port_base_addr = 0x8,
+		.phy_base_addr = 0x0,
+		.global1_addr = 0xf,
+		.global2_addr = 0x7,
+		.age_time_coeff = 15000,
+		.g1_irqs = 9,
+		.g2_irqs = 5,
+		.atu_move_port_mask = 0xf,
+		.dual_chip = true,
+		.ops = &mv88e6250_ops,
+	},
+
 	[MV88E6085] = {
 		.prod_num = MV88E6XXX_PORT_SWITCH_ID_PROD_6085,
 		.family = MV88E6XXX_FAMILY_6097,
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 31c09b66fbff..dd3f777a7201 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -54,6 +54,7 @@ enum mv88e6xxx_frame_mode {
 
 /* List of supported models */
 enum mv88e6xxx_model {
+	MV88E6020,
 	MV88E6085,
 	MV88E6095,
 	MV88E6097,
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index aec9d4fd20e3..169ce5b6fa31 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -111,6 +111,7 @@
 /* Offset 0x03: Switch Identifier Register */
 #define MV88E6XXX_PORT_SWITCH_ID		0x03
 #define MV88E6XXX_PORT_SWITCH_ID_PROD_MASK	0xfff0
+#define MV88E6XXX_PORT_SWITCH_ID_PROD_6020	0x0200
 #define MV88E6XXX_PORT_SWITCH_ID_PROD_6085	0x04a0
 #define MV88E6XXX_PORT_SWITCH_ID_PROD_6095	0x0950
 #define MV88E6XXX_PORT_SWITCH_ID_PROD_6097	0x0990
-- 
2.20.1