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68 lines
2.5 KiB
Diff
68 lines
2.5 KiB
Diff
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From a6ad589c1d118f9d5b1bc4c6888d42919f830340 Mon Sep 17 00:00:00 2001
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From: Heiner Kallweit <hkallweit1@gmail.com>
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Date: Mon, 7 Oct 2024 11:57:41 +0200
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Subject: [PATCH] net: phy: realtek: Fix MMD access on RTL8126A-integrated PHY
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All MMD reads return 0 for the RTL8126A-integrated PHY. Therefore phylib
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assumes it doesn't support EEE, what results in higher power consumption,
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and a significantly higher chip temperature in my case.
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To fix this split out the PHY driver for the RTL8126A-integrated PHY
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and set the read_mmd/write_mmd callbacks to read from vendor-specific
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registers.
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Fixes: 5befa3728b85 ("net: phy: realtek: add support for RTL8126A-integrated 5Gbps PHY")
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Cc: stable@vger.kernel.org
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Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/phy/realtek.c | 24 +++++++++++++++++++++++-
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1 file changed, 23 insertions(+), 1 deletion(-)
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--- a/drivers/net/phy/realtek.c
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+++ b/drivers/net/phy/realtek.c
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@@ -1081,6 +1081,16 @@ static int rtl8221b_vn_cg_c45_match_phy_
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return rtlgen_is_c45_match(phydev, RTL_8221B_VN_CG, true);
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}
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+static int rtl8251b_c22_match_phy_device(struct phy_device *phydev)
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+{
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+ return rtlgen_is_c45_match(phydev, RTL_8251B, false);
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+}
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+
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+static int rtl8251b_c45_match_phy_device(struct phy_device *phydev)
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+{
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+ return rtlgen_is_c45_match(phydev, RTL_8251B, true);
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+}
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+
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static int rtlgen_resume(struct phy_device *phydev)
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{
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int ret = genphy_resume(phydev);
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@@ -1418,7 +1428,7 @@ static struct phy_driver realtek_drvs[]
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.suspend = genphy_c45_pma_suspend,
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.resume = rtlgen_c45_resume,
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}, {
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- PHY_ID_MATCH_EXACT(0x001cc862),
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+ .match_phy_device = rtl8251b_c45_match_phy_device,
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.name = "RTL8251B 5Gbps PHY",
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.get_features = rtl822x_get_features,
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.config_aneg = rtl822x_config_aneg,
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@@ -1428,6 +1438,18 @@ static struct phy_driver realtek_drvs[]
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.read_page = rtl821x_read_page,
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.write_page = rtl821x_write_page,
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}, {
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+ .match_phy_device = rtl8251b_c22_match_phy_device,
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+ .name = "RTL8126A-internal 5Gbps PHY",
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+ .get_features = rtl822x_get_features,
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+ .config_aneg = rtl822x_config_aneg,
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+ .read_status = rtl822x_read_status,
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+ .suspend = genphy_suspend,
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+ .resume = rtlgen_resume,
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+ .read_page = rtl821x_read_page,
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+ .write_page = rtl821x_write_page,
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+ .read_mmd = rtl822x_read_mmd,
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+ .write_mmd = rtl822x_write_mmd,
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+ }, {
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PHY_ID_MATCH_EXACT(0x001ccad0),
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.name = "RTL8224 2.5Gbps PHY",
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.get_features = rtl822x_c45_get_features,
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