diff options
| author | Oleksij Rempel <o.rempel@pengutronix.de> | 2022-08-26 12:56:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-08-31 09:41:17 +0100 |
| commit | d7539fc2b41a126d596d1e5777e0697a4acc692c (patch) | |
| tree | 56cc349c43d1a392830c4fd6671c04b0ca1d990d | |
| parent | 505bf3205aaa3d736aa432ff62bd532882cec32e (diff) | |
net: dsa: microchip: don't announce extended register support on non Gbit chips
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>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/dsa/microchip/ksz9477.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 0f7f44358d7b..2b3bf1d3950c 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -264,6 +264,16 @@ 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 +318,7 @@ 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; |