net: mediatek: fix direct MDIO clause 45 access via SoC
The original direct MDIO clause 45 access via SoC is missing the
data output. This patch adds it back to ensure MDIO clause 45 can
work properly for external PHYs.
diff --git a/drivers/net/mtk_eth.c b/drivers/net/mtk_eth.c
index cd72070..61a1c29 100644
--- a/drivers/net/mtk_eth.c
+++ b/drivers/net/mtk_eth.c
@@ -198,7 +198,7 @@
(((u32)phy << MDIO_PHY_ADDR_S) & MDIO_PHY_ADDR_M) |
(((u32)reg << MDIO_REG_ADDR_S) & MDIO_REG_ADDR_M);
- if (cmd == MDIO_CMD_WRITE)
+ if (cmd == MDIO_CMD_WRITE || cmd == MDIO_CMD_ADDR)
val |= data & MDIO_RW_DATA_M;
mtk_gmac_write(priv, GMAC_PIAC_REG, val | PHY_ACS_ST);
@@ -210,7 +210,7 @@
return ret;
}
- if (cmd == MDIO_CMD_READ) {
+ if (cmd == MDIO_CMD_READ || cmd == MDIO_CMD_READ_C45) {
val = mtk_gmac_read(priv, GMAC_PIAC_REG);
return val & MDIO_RW_DATA_M;
}