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
Subject: [PATCH net-next v3 03/17] net: dsa: microchip: don't announce extended register support on non Gbit chips
Date: Tue, 23 Aug 2022 10:02:17 +0200 [thread overview]
Message-ID: <20220823080231.2466017-4-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20220823080231.2466017-1-o.rempel@pengutronix.de>
This issue was detected after adding support of regmap_ranges for KSZ8563R
chip. This chip is reporting extended registers support without having
actual extended registers. This made PHYlib request not existing
registers.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/dsa/microchip/ksz9477.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
index 0f7f44358d7b3..acd4be196b69c 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -264,6 +264,17 @@ void ksz9477_port_init_cnt(struct ksz_device *dev, int port)
mutex_unlock(&mib->cnt_mutex);
}
+
+static void ksz9477_r_phy_quirks(struct ksz_device *dev, u16 addr, u16 reg,
+ u16 *data)
+{
+ /* KSZ8563R do not have extended registers but BMSR_ESTATEN and
+ * BMSR_ERCAP bits are set.
+ */
+ if (dev->chip_id == KSZ8563_CHIP_ID && reg == MII_BMSR)
+ *data &= ~(BMSR_ESTATEN | BMSR_ERCAP);
+}
+
void ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
{
u16 val = 0xffff;
@@ -308,6 +319,7 @@ void ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
}
} else {
ksz_pread16(dev, addr, 0x100 + (reg << 1), &val);
+ ksz9477_r_phy_quirks(dev, addr, reg, &val);
}
*data = val;
--
2.30.2
next prev parent reply other threads:[~2022-08-23 8:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-23 8:02 [PATCH net-next v3 00/17] net: dsa: microchip: add error handling and register access validation Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 01/17] net: dsa: microchip: add separate struct ksz_chip_data for KSZ8563 chip Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 02/17] net: dsa: microchip: do per-port Gbit detection instead of per-chip Oleksij Rempel
2022-08-23 8:02 ` Oleksij Rempel [this message]
2022-08-23 8:02 ` [PATCH net-next v3 04/17] net: dsa: microchip: allow to pass return values for PHY read/write accesses Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 05/17] net: dsa: microchip: forward error value on all ksz_pread/ksz_pwrite functions Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 06/17] net: dsa: microchip: ksz9477: add error handling to ksz9477_r/w_phy Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 07/17] net: dsa: microchip: ksz8795: add error handling to ksz8_r/w_phy Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 08/17] net: dsa: microchip: KSZ9893: do not write to not supported Output Clock Control Register Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 09/17] net: dsa: microchip: add support for regmap_access_tables Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 10/17] net: dsa: microchip: add regmap_range for KSZ8563 chip Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 11/17] net: dsa: microchip: ksz9477: remove MII_CTRL1000 check from ksz9477_w_phy() Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 12/17] net: dsa: microchip: add regmap_range for KSZ9477 chip Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 13/17] net: dsa: microchip: ksz9477: use internal_phy instead of phy_port_cnt Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 14/17] net: dsa: microchip: remove unused port phy variable Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 15/17] net: dsa: microchip: ksz9477: remove unused "on" variable Oleksij Rempel
2022-08-25 20:54 ` Vladimir Oltean
2022-08-26 7:51 ` Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 16/17] net: dsa: microchip: remove unused sgmii variable Oleksij Rempel
2022-08-23 8:02 ` [PATCH net-next v3 17/17] net: dsa: microchip: remove IS_9893 flag Oleksij Rempel
2022-08-25 9:00 ` [PATCH net-next v3 00/17] net: dsa: microchip: add error handling and register access validation Paolo Abeni
2022-08-25 21:44 ` Vladimir Oltean
2022-08-25 22:57 ` Jakub Kicinski
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