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net: mediatek: fix direct MDIO clause 45 access via SoC

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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.

Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Weijie Gao
2023-07-19 17:17:03 +08:00
committed by Tom Rini
parent c41a058fb2
commit c94ad00917
1 changed files with 2 additions and 2 deletions
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4
drivers/net/mtk_eth.c
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@@ -198,7 +198,7 @@ static int mtk_mii_rw(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data,
(((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 @@ static int mtk_mii_rw(struct mtk_eth_priv *priv, u8 phy, u8 reg, u16 data,
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;
}