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From: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
To: f.fainelli@gmail.com, jonas.gorski@gmail.com, andrew@lunn.ch,
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Cc: =?utf-8?q?=C3=81lvaro_Fern=C3=A1ndez_Rojas?= <noltari@gmail.com>
Subject: [PATCH v2] net: dsa: b53: add support for BCM63xx RGMIIs
Date: Sun, 19 Mar 2023 23:08:05 +0100
Message-Id: <20230319220805.124024-1-noltari@gmail.com>
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BCM63xx RGMII ports require additional configuration in order to work.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
v2: add changes suggested by Andrew:
- Use a switch statement.
- Use dev_dbg() instead of dev_info().
drivers/net/dsa/b53/b53_common.c | 46 ++++++++++++++++++++++++++++++++
drivers/net/dsa/b53/b53_priv.h | 1 +
2 files changed, 47 insertions(+)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1209,6 +1209,46 @@ static void b53_force_port_config(struct
b53_write8(dev, B53_CTRL_PAGE, off, reg);
}
+static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port,
+ phy_interface_t interface)
+{
+ struct b53_device *dev = ds->priv;
+ u8 rgmii_ctrl = 0, off;
+
+ if (port == dev->imp_port)
+ off = B53_RGMII_CTRL_IMP;
+ else
+ off = B53_RGMII_CTRL_P(port);
+
+ b53_read8(dev, B53_CTRL_PAGE, off, &rgmii_ctrl);
+
+ switch (interface) {
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ rgmii_ctrl |= (RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ rgmii_ctrl &= ~(RGMII_CTRL_DLL_TXC);
+ rgmii_ctrl |= RGMII_CTRL_DLL_RXC;
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC);
+ rgmii_ctrl |= RGMII_CTRL_DLL_TXC;
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ default:
+ rgmii_ctrl &= ~(RGMII_CTRL_DLL_RXC | RGMII_CTRL_DLL_TXC);
+ break;
+ }
+
+ if (port != dev->imp_port)
+ rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
+
+ b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);
+
+ dev_dbg(ds->dev, "Configured port %d for %s\n", port,
+ phy_modes(interface));
+}
+
static void b53_adjust_link(struct dsa_switch *ds, int port,
struct phy_device *phydev)
{
@@ -1235,6 +1275,9 @@ static void b53_adjust_link(struct dsa_s
tx_pause, rx_pause);
b53_force_link(dev, port, phydev->link);
+ if (is63xx(dev) && port >= B53_63XX_RGMII0)
+ b53_adjust_63xx_rgmii(ds, port, phydev->interface);
+
if (is531x5(dev) && phy_interface_is_rgmii(phydev)) {
if (port == dev->imp_port)
off = B53_RGMII_CTRL_IMP;
@@ -1419,6 +1462,9 @@ void b53_phylink_mac_link_up(struct dsa_
{
struct b53_device *dev = ds->priv;
+ if (is63xx(dev) && port >= B53_63XX_RGMII0)
+ b53_adjust_63xx_rgmii(ds, port, interface);
+
if (mode == MLO_AN_PHY)
return;
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -206,6 +206,7 @@ static inline int is58xx(struct b53_devi
dev->chip_id == BCM7278_DEVICE_ID;
}
+#define B53_63XX_RGMII0 4
#define B53_CPU_PORT_25 5
#define B53_CPU_PORT 8
|
