package/boot/uboot-mediatek/patches/101-18-net-mediatek-fix-direct-MDIO-clause-45-access-via-So.patch

   1 From c44f6ac1a31961b0d4faf982ee42167de5ac1672 Mon Sep 17 00:00:00 2001
   2 From: Weijie Gao <weijie.gao@mediatek.com>
   3 Date: Wed, 19 Jul 2023 17:17:03 +0800
   4 Subject: [PATCH 18/29] net: mediatek: fix direct MDIO clause 45 access via SoC
   5
   6 The original direct MDIO clause 45 access via SoC is missing the
   7 data output. This patch adds it back to ensure MDIO clause 45 can
   8 work properly for external PHYs.
   9
  10 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
  11 ---
  12  drivers/net/mtk_eth.c | 4 ++--
  13  1 file changed, 2 insertions(+), 2 deletions(-)
  14
  15 --- a/drivers/net/mtk_eth.c
  16 +++ b/drivers/net/mtk_eth.c
  17 @@ -198,7 +198,7 @@ static int mtk_mii_rw(struct mtk_eth_pri
  18               (((u32)phy << MDIO_PHY_ADDR_S) & MDIO_PHY_ADDR_M) |
  19               (((u32)reg << MDIO_REG_ADDR_S) & MDIO_REG_ADDR_M);
  20
  21 -       if (cmd == MDIO_CMD_WRITE)
  22 +       if (cmd == MDIO_CMD_WRITE || cmd == MDIO_CMD_ADDR)
  23                 val |= data & MDIO_RW_DATA_M;
  24
  25         mtk_gmac_write(priv, GMAC_PIAC_REG, val | PHY_ACS_ST);
  26 @@ -210,7 +210,7 @@ static int mtk_mii_rw(struct mtk_eth_pri
  27                 return ret;
  28         }
  29
  30 -       if (cmd == MDIO_CMD_READ) {
  31 +       if (cmd == MDIO_CMD_READ || cmd == MDIO_CMD_READ_C45) {
  32                 val = mtk_gmac_read(priv, GMAC_PIAC_REG);
  33                 return val & MDIO_RW_DATA_M;
  34         }