[PATCH] net: phy: DP83822: enable rgmii mode if phy_interface_is_rgmii

[Tommaso Merciai]

RGMII mode can be enable from dp83822 straps, and also writing bit 9
of register 0x17 - RMII and Status Register (RCSR).
When phy_interface_is_rgmii this mode must be enabled

References:
 - https://www.ti.com/lit/gpn/dp83822i p66

Signed-off-by: Tommaso Merciai <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx>
Co-developed-by: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
Suggested-by: Alberto Bianchi <alberto.bianchi@xxxxxxxxxxxxxxxxxxxx>
Tested-by: Tommaso Merciai <tommaso.merciai@xxxxxxxxxxxxxxxxxxxx>
---
 drivers/net/phy/dp83822.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
index ce17b2af3218..66fa61fb86db 100644
--- a/drivers/net/phy/dp83822.c
+++ b/drivers/net/phy/dp83822.c
@@ -408,6 +408,10 @@ static int dp83822_config_init(struct phy_device *phydev)
 			if (err)
 				return err;
 		}
+
+		/* Enable RGMII Mode */
+		phy_set_bits_mmd(phydev, DP83822_DEVADDR,
+					MII_DP83822_RCSR, BIT(9));
 	}
 
 	if (dp83822->fx_enabled) {
-- 
2.25.1