diff options
| author | Arınç ÜNAL <arinc.unal@arinc9.com> | 2024-04-22 10:15:22 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-04-24 11:57:03 +0100 |
| commit | bf1774491eea7f0c146eac5b64cc93b38f5c5335 (patch) | |
| tree | eb939b52e723ede4637fb3dee9acaf9681bbed59 /drivers/net | |
| parent | 9df9aec174f582c01f67ce1a9d2dc4f289e13b3f (diff) | |
net: dsa: mt7530: explain exposing MDIO bus of MT7531AE better
Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on MT7531AE.
Therefore, the GPIO 11-12 pins are set to function as MDC and MDIO to
expose the MDIO bus of the switch. Replace the comment with a better
explanation.
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/dsa/mt7530.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 1f6cd24de4b7..2b9f904a98f0 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2635,7 +2635,10 @@ mt7531_setup(struct dsa_switch *ds) if (!priv->p5_sgmii) { mt7531_pll_setup(priv); } else { - /* Let ds->user_mii_bus be able to access external phy. */ + /* Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on + * MT7531AE. Set the GPIO 11-12 pins to function as MDC and MDIO + * to expose the MDIO bus of the switch. + */ mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK, MT7531_EXT_P_MDC_11); mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK, |