Merge branch 'net-dsa-b53-configure-6318-and-63268-rgmii-ports'

Álvaro Fernández Rojas says:

====================
net: dsa: b53: configure 6318 and 63268 RGMII ports

BCM6318 and BCM63268 need special configuration for their RGMII ports, so we
need to be able to identify them as a special BCM63xx switch.
In the meantime, let's add some missing BCM63xx SoCs to B53 MMAP device table.

This should be applied after "net: dsa: b53: add support for BCM63xx RGMIIs":
https://patchwork.kernel.org/project/netdevbpf/patch/20230319220805.124024-1-noltari@gmail.com/

Álvaro Fernández Rojas (4):
  dt-bindings: net: dsa: b53: add more 63xx SoCs
  net: dsa: b53: mmap: add more 63xx SoCs
  net: dsa: b53: mmap: allow passing a chip ID
  net: dsa: b53: add BCM63268 RGMII configuration

 .../devicetree/bindings/net/dsa/brcm,b53.yaml |  3 ++
 drivers/net/dsa/b53/b53_common.c              | 19 +++++++++++-
 drivers/net/dsa/b53/b53_mmap.c                | 29 +++++++++++++++----
 drivers/net/dsa/b53/b53_priv.h                |  9 +++++-
 drivers/net/dsa/b53/b53_regs.h                |  1 +
 5 files changed, 53 insertions(+), 8 deletions(-)
====================

Link: https://lore.kernel.org/r/20230321173359.251778-1-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

5 files changed, 53 insertions, 8 deletions

diff --git a/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml b/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml
index 5bef4128d175..57e0ef93b134 100644
--- a/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/brcm,b53.yaml
@@ -57,8 +57,11 @@ properties:
       - items:
           - enum:
               - brcm,bcm3384-switch
+              - brcm,bcm6318-switch
               - brcm,bcm6328-switch
+              - brcm,bcm6362-switch
               - brcm,bcm6368-switch
+              - brcm,bcm63268-switch
           - const: brcm,bcm63xx-switch
 
 required:
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 6e212f6f1cb9..1f9b251a5452 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1240,8 +1240,12 @@ static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port,
 		break;
 	}
 
-	if (port != dev->imp_port)
+	if (port != dev->imp_port) {
+		if (is63268(dev))
+			rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE;
+
 		rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
+	}
 
 	b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
 
@@ -2466,6 +2470,19 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
 	},
 	{
+		.chip_id = BCM63268_DEVICE_ID,
+		.dev_name = "BCM63268",
+		.vlans = 4096,
+		.enabled_ports = 0, /* pdata must provide them */
+		.arl_bins = 4,
+		.arl_buckets = 1024,
+		.imp_port = 8,
+		.vta_regs = B53_VTA_REGS_63XX,
+		.duplex_reg = B53_DUPLEX_STAT_63XX,
+		.jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
+		.jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
+	},
+	{
 		.chip_id = BCM53010_DEVICE_ID,
 		.dev_name = "BCM53010",
 		.vlans = 4096,
diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c
index e968322dfbf0..a83a0c9d6939 100644
--- a/drivers/net/dsa/b53/b53_mmap.c
+++ b/drivers/net/dsa/b53/b53_mmap.c
@@ -248,7 +248,7 @@ static int b53_mmap_probe_of(struct platform_device *pdev,
 		return -ENOMEM;
 
 	pdata->regs = mem;
-	pdata->chip_id = BCM63XX_DEVICE_ID;
+	pdata->chip_id = (u32)(unsigned long)device_get_match_data(dev);
 	pdata->big_endian = of_property_read_bool(np, "big-endian");
 
 	of_ports = of_get_child_by_name(np, "ports");
@@ -330,11 +330,28 @@ static void b53_mmap_shutdown(struct platform_device *pdev)
 }
 
 static const struct of_device_id b53_mmap_of_table[] = {
-	{ .compatible = "brcm,bcm3384-switch" },
-	{ .compatible = "brcm,bcm6328-switch" },
-	{ .compatible = "brcm,bcm6368-switch" },
-	{ .compatible = "brcm,bcm63xx-switch" },
-	{ /* sentinel */ },
+	{
+		.compatible = "brcm,bcm3384-switch",
+		.data = (void *)BCM63XX_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm6318-switch",
+		.data = (void *)BCM63268_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm6328-switch",
+		.data = (void *)BCM63XX_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm6362-switch",
+		.data = (void *)BCM63XX_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm6368-switch",
+		.data = (void *)BCM63XX_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm63268-switch",
+		.data = (void *)BCM63268_DEVICE_ID,
+	}, {
+		.compatible = "brcm,bcm63xx-switch",
+		.data = (void *)BCM63XX_DEVICE_ID,
+	}, { /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, b53_mmap_of_table);
 
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 4cf9f540696e..a689a6950189 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -70,6 +70,7 @@ enum {
 	BCM53125_DEVICE_ID = 0x53125,
 	BCM53128_DEVICE_ID = 0x53128,
 	BCM63XX_DEVICE_ID = 0x6300,
+	BCM63268_DEVICE_ID = 0x63268,
 	BCM53010_DEVICE_ID = 0x53010,
 	BCM53011_DEVICE_ID = 0x53011,
 	BCM53012_DEVICE_ID = 0x53012,
@@ -191,7 +192,13 @@ static inline int is531x5(struct b53_device *dev)
 
 static inline int is63xx(struct b53_device *dev)
 {
-	return dev->chip_id == BCM63XX_DEVICE_ID;
+	return dev->chip_id == BCM63XX_DEVICE_ID ||
+		dev->chip_id == BCM63268_DEVICE_ID;
+}
+
+static inline int is63268(struct b53_device *dev)
+{
+	return dev->chip_id == BCM63268_DEVICE_ID;
 }
 
 static inline int is5301x(struct b53_device *dev)
diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index b2c539a42154..bfbcb66bef66 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -138,6 +138,7 @@
 
 #define B53_RGMII_CTRL_IMP		0x60
 #define   RGMII_CTRL_ENABLE_GMII	BIT(7)
+#define   RGMII_CTRL_MII_OVERRIDE	BIT(6)
 #define   RGMII_CTRL_TIMING_SEL		BIT(2)
 #define   RGMII_CTRL_DLL_RXC		BIT(1)
 #define   RGMII_CTRL_DLL_TXC		BIT(0)