From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Woojung Huh <woojung.huh@microchip.com>,
UNGLinuxDriver@microchip.com, Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
Vivien Didelot <vivien.didelot@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: Michael Grzeschik <m.grzeschik@pengutronix.de>,
Oleksij Rempel <o.rempel@pengutronix.de>,
kernel@pengutronix.de, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
Russell King <linux@armlinux.org.uk>
Subject: [PATCH net-next v3 2/9] net: dsa: microchip: ksz8795: add phylink support
Date: Wed, 26 May 2021 06:30:30 +0200 [thread overview]
Message-ID: <20210526043037.9830-3-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20210526043037.9830-1-o.rempel@pengutronix.de>
From: Michael Grzeschik <m.grzeschik@pengutronix.de>
This patch adds the phylink support to the ksz8795 driver to provide
configuration exceptions on quirky KSZ8863 and KSZ8873 ports.
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/dsa/microchip/ksz8795.c | 59 +++++++++++++++++++++++++++++
1 file changed, 59 insertions(+)
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index ba065003623f..cf81ae87544d 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -18,6 +18,7 @@
#include <linux/micrel_phy.h>
#include <net/dsa.h>
#include <net/switchdev.h>
+#include <linux/phylink.h>
#include "ksz_common.h"
#include "ksz8795_reg.h"
@@ -1420,11 +1421,69 @@ static int ksz8_setup(struct dsa_switch *ds)
return 0;
}
+static void ksz8_validate(struct dsa_switch *ds, int port,
+ unsigned long *supported,
+ struct phylink_link_state *state)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+ struct ksz_device *dev = ds->priv;
+
+ if (port == dev->cpu_port) {
+ if (state->interface != PHY_INTERFACE_MODE_RMII &&
+ state->interface != PHY_INTERFACE_MODE_MII &&
+ state->interface != PHY_INTERFACE_MODE_NA)
+ goto unsupported;
+ } else if (port > dev->port_cnt) {
+ bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ dev_err(ds->dev, "Unsupported port: %i\n", port);
+ return;
+ } else {
+ if (state->interface != PHY_INTERFACE_MODE_INTERNAL &&
+ state->interface != PHY_INTERFACE_MODE_NA)
+ goto unsupported;
+ }
+
+ /* Allow all the expected bits */
+ phylink_set_port_modes(mask);
+ phylink_set(mask, Autoneg);
+
+ /* Silicon Errata Sheet (DS80000830A):
+ * "Port 1 does not respond to received flow control PAUSE frames"
+ * So, disable Pause support on "Port 1" (port == 0) for all ksz88x3
+ * switches.
+ */
+ if (!ksz_is_ksz88x3(dev) || port)
+ phylink_set(mask, Pause);
+
+ /* Asym pause is not supported on KSZ8863 and KSZ8873 */
+ if (!ksz_is_ksz88x3(dev))
+ phylink_set(mask, Asym_Pause);
+
+ /* 10M and 100M are only supported */
+ phylink_set(mask, 10baseT_Half);
+ phylink_set(mask, 10baseT_Full);
+ phylink_set(mask, 100baseT_Half);
+ phylink_set(mask, 100baseT_Full);
+
+ bitmap_and(supported, supported, mask,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_and(state->advertising, state->advertising, mask,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+
+ return;
+
+unsupported:
+ bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ dev_err(ds->dev, "Unsupported interface: %s, port: %d\n",
+ phy_modes(state->interface), port);
+}
+
static const struct dsa_switch_ops ksz8_switch_ops = {
.get_tag_protocol = ksz8_get_tag_protocol,
.setup = ksz8_setup,
.phy_read = ksz_phy_read16,
.phy_write = ksz_phy_write16,
+ .phylink_validate = ksz8_validate,
.phylink_mac_link_down = ksz_mac_link_down,
.port_enable = ksz_enable_port,
.get_strings = ksz8_get_strings,
--
2.29.2
next prev parent reply other threads:[~2021-05-26 4:31 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-26 4:30 [PATCH net-next v3 0/9] provide cable test support for the ksz886x switch Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 1/9] net: phy: micrel: move phy reg offsets to common header Oleksij Rempel
2021-05-26 22:01 ` Vladimir Oltean
2021-05-27 15:16 ` Andrew Lunn
2021-05-26 4:30 ` Oleksij Rempel [this message]
2021-05-26 22:13 ` [PATCH net-next v3 2/9] net: dsa: microchip: ksz8795: add phylink support Vladimir Oltean
2021-06-10 10:20 ` Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 3/9] net: phy: micrel: use consistent indention after define Oleksij Rempel
2021-05-26 22:24 ` Vladimir Oltean
2021-06-10 10:30 ` Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 4/9] net: phy: micrel: apply resume errata workaround for ksz8873 and ksz8863 Oleksij Rempel
2021-05-26 22:43 ` Vladimir Oltean
2021-06-10 11:49 ` Oleksij Rempel
2021-06-10 13:04 ` Vladimir Oltean
2021-06-10 13:25 ` Oleksij Rempel
2021-06-10 18:18 ` Vladimir Oltean
2021-05-26 4:30 ` [PATCH net-next v3 5/9] net: phy/dsa micrel/ksz886x add MDI-X support Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 6/9] net: phy: micrel: ksz8081 " Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 7/9] net: dsa: microchip: ksz8795: add LINK_MD register support Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 8/9] net: dsa: dsa_slave_phy_connect(): extend phy's flags with port specific phy flags Oleksij Rempel
2021-05-26 15:08 ` Russell King (Oracle)
2021-06-10 10:04 ` Oleksij Rempel
2021-05-26 4:30 ` [PATCH net-next v3 9/9] net: phy: micrel: ksz886x/ksz8081: add cabletest support Oleksij Rempel
2021-05-26 19:32 ` Jakub Kicinski
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