From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Woojung Huh <woojung.huh@microchip.com>,
UNGLinuxDriver@microchip.com, Andrew Lunn <andrew@lunn.ch>,
Vivien Didelot <vivien.didelot@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Vladimir Oltean <olteanv@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, Arun.Ramadoss@microchip.com
Subject: [PATCH v1 14/26] net: dsa: microchip: KSZ88x3 fix loopback support
Date: Mon, 28 Nov 2022 13:00:22 +0100 [thread overview]
Message-ID: <20221128120034.4075562-15-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20221128120034.4075562-1-o.rempel@pengutronix.de>
With current code loopback is not working and selftest will always fail.
Fix register and bit offsets to make loopback on KSZ88x3 switches.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/dsa/microchip/ksz8795.c | 24 ++++++++++++++++++------
drivers/net/dsa/microchip/ksz8795_reg.h | 1 +
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
index 208cf4dde397..a6d5de41a754 100644
--- a/drivers/net/dsa/microchip/ksz8795.c
+++ b/drivers/net/dsa/microchip/ksz8795.c
@@ -625,8 +625,13 @@ int ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
if (ret)
return ret;
- if (restart & PORT_PHY_LOOPBACK)
- data |= BMCR_LOOPBACK;
+ if (ksz_is_ksz88x3(dev)) {
+ if (restart & KSZ8873_PORT_PHY_LOOPBACK)
+ data |= BMCR_LOOPBACK;
+ } else {
+ if (restart & PORT_PHY_LOOPBACK)
+ data |= BMCR_LOOPBACK;
+ }
if (ctrl & PORT_FORCE_100_MBIT)
data |= BMCR_SPEED100;
if (ksz_is_ksz88x3(dev)) {
@@ -849,10 +854,17 @@ int ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
data |= PORT_FORCE_MDIX;
else
data &= ~PORT_FORCE_MDIX;
- if (val & BMCR_LOOPBACK)
- data |= PORT_PHY_LOOPBACK;
- else
- data &= ~PORT_PHY_LOOPBACK;
+ if (ksz_is_ksz88x3(dev)) {
+ if (val & BMCR_LOOPBACK)
+ data |= KSZ8873_PORT_PHY_LOOPBACK;
+ else
+ data &= ~KSZ8873_PORT_PHY_LOOPBACK;
+ } else {
+ if (val & BMCR_LOOPBACK)
+ data |= PORT_PHY_LOOPBACK;
+ else
+ data &= ~PORT_PHY_LOOPBACK;
+ }
if (data != restart) {
ret = ksz_pwrite8(dev, p, regs[P_NEG_RESTART_CTRL],
diff --git a/drivers/net/dsa/microchip/ksz8795_reg.h b/drivers/net/dsa/microchip/ksz8795_reg.h
index 0bdceb534192..08204da7d621 100644
--- a/drivers/net/dsa/microchip/ksz8795_reg.h
+++ b/drivers/net/dsa/microchip/ksz8795_reg.h
@@ -262,6 +262,7 @@
#define PORT_AUTO_MDIX_DISABLE BIT(2)
#define PORT_FORCE_MDIX BIT(1)
#define PORT_MAC_LOOPBACK BIT(0)
+#define KSZ8873_PORT_PHY_LOOPBACK BIT(0)
#define REG_PORT_1_STATUS_2 0x1E
#define REG_PORT_2_STATUS_2 0x2E
--
2.30.2
next prev parent reply other threads:[~2022-11-28 12:03 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-28 12:00 [PATCH v1 00/26] net: dsa: microchip: stats64, fdb, error Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 01/26] net: dsa: microchip: add stats64 support for ksz8 series of switches Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 02/26] net: dsa: microchip: ksz8: ksz8_fdb_dump: fix port validation and VID information Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 03/26] net: dsa: microchip: ksz8: ksz8_fdb_dump: fix not complete fdb extraction Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 04/26] net: dsa: microchip: ksz8: ksz8_fdb_dump: fix time stamp extraction Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 05/26] net: dsa: microchip: ksz8: ksz8_fdb_dump: do not extract ghost entry from empty table Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 06/26] net: dsa: microchip: ksz8863_smi: fix bulk access Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 07/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): remove timestamp support Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 08/26] net: dsa: microchip: make ksz8_r_dyn_mac_table() static Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 09/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): remove fid support Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 10/26] net: dsa: microchip: ksz8: refactor ksz8_fdb_dump() Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 11/26] net: dsa: microchip: ksz8: ksz8_fdb_dump: dump static MAC table Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 12/26] net: dsa: microchip: ksz8: move static mac table operations to a separate functions Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 13/26] net: dsa: microchip: ksz8: add fdb_add/del support Oleksij Rempel
2022-11-28 12:00 ` Oleksij Rempel [this message]
2022-11-28 12:00 ` [PATCH v1 15/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): move main part of the code out of if statement Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 16/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): use ret instead of rc Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 17/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): ksz: do not return EAGAIN on timeout Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 18/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): return read/write error if we got any Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 19/26] net: dsa: microchip: ksz8_r_dyn_mac_table(): use entries variable to signal 0 entries Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 20/26] net: dsa: microchip: make ksz8_r_sta_mac_table() static Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 21/26] net: dsa: microchip: ksz8_r_sta_mac_table(): do not use error code for empty entries Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 22/26] net: dsa: microchip: ksz8_r_sta_mac_table(): make use of error values provided by read/write functions Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 23/26] net: dsa: microchip: make ksz8_w_sta_mac_table() static Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 24/26] net: dsa: microchip: ksz8_w_sta_mac_table(): make use of error values provided by read/write functions Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 25/26] net: dsa: microchip: remove ksz_port:on variable Oleksij Rempel
2022-11-28 12:00 ` [PATCH v1 26/26] net: dsa: microchip: ksz8: do not force flow control by default Oleksij Rempel
2022-11-28 12:10 ` [PATCH v1 00/26] net: dsa: microchip: stats64, fdb, error Oleksij Rempel
-- strict thread matches above, loose matches on Subject: below --
2022-11-28 11:59 Oleksij Rempel
2022-11-28 11:59 ` [PATCH v1 14/26] net: dsa: microchip: KSZ88x3 fix loopback support Oleksij Rempel
2022-11-29 6:42 ` Arun.Ramadoss
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