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| author | Daniel Golle <daniel@makrotopia.org> | 2023-04-30 03:59:55 +0100 |
|---|---|---|
| committer | Daniel Golle <daniel@makrotopia.org> | 2023-04-30 17:27:00 +0100 |
| commit | 28b3a5e6b5b17520d62745cac5cfa07e4793fe5c (patch) | |
| tree | 66bf4dae2167c280c2b326ae409dd4c2122a068c /target | |
| parent | 45f5115253362c82296eb212742381e90199b3ef (diff) | |
| download | upstream-28b3a5e6b5b17520d62745cac5cfa07e4793fe5c.tar.gz upstream-28b3a5e6b5b17520d62745cac5cfa07e4793fe5c.tar.bz2 upstream-28b3a5e6b5b17520d62745cac5cfa07e4793fe5c.zip | |
generic: net: phy: realtek: detect early version of RTL8221B
Early versions (?) of the RTL8221B PHY cannot be identified in a regular
Clause-45 bus scan as the PHY doesn't report the implemented MMDs
correctly but returns 0 instead.
Implement custom identify function using the PKGID instead of iterating
over the implemented MMDs to work-around this problem.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/generic/pending-5.15/730-net-phy-realtek-detect-early-version-of-RTL8221B.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.15/730-net-phy-realtek-detect-early-version-of-RTL8221B.patch b/target/linux/generic/pending-5.15/730-net-phy-realtek-detect-early-version-of-RTL8221B.patch new file mode 100644 index 0000000000..6d414bfbad --- /dev/null +++ b/target/linux/generic/pending-5.15/730-net-phy-realtek-detect-early-version-of-RTL8221B.patch @@ -0,0 +1,63 @@ +From 0de82310d2b32e78ff79d42c08b1122a6ede3778 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Sun, 30 Apr 2023 00:15:41 +0100 +Subject: [PATCH] net: phy: realtek: detect early version of RTL8221B + +Early versions (?) of the RTL8221B PHY cannot be identified in a regular +Clause-45 bus scan as the PHY doesn't report the implemented MMDs +correctly but returns 0 instead. +Implement custom identify function using the PKGID instead of iterating +over the implemented MMDs. + +Signed-off-by: Daniel Golle <daniel@makrotopia.org> + +--- a/drivers/net/phy/realtek.c ++++ b/drivers/net/phy/realtek.c +@@ -744,6 +744,38 @@ static int rtl8226_match_phy_device(stru + rtlgen_supports_2_5gbps(phydev); + } + ++static int rtl8221b_vb_cg_match_phy_device(struct phy_device *phydev) ++{ ++ int val; ++ u32 id; ++ ++ if (phydev->mdio.bus->probe_capabilities >= MDIOBUS_C45) { ++ val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PKGID1); ++ if (val < 0) ++ return 0; ++ ++ id = val << 16; ++ val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PKGID2); ++ if (val < 0) ++ return 0; ++ ++ id |= val; ++ } else { ++ val = phy_read(phydev, MII_PHYSID1); ++ if (val < 0) ++ return 0; ++ ++ id = val << 16; ++ val = phy_read(phydev, MII_PHYSID2); ++ if (val < 0) ++ return 0; ++ ++ id |= val; ++ } ++ ++ return (id == 0x001cc849); ++} ++ + static int rtl822x_probe(struct phy_device *phydev) + { + struct device *dev = &phydev->mdio.dev; +@@ -1084,7 +1116,7 @@ static struct phy_driver realtek_drvs[] + .write_page = rtl821x_write_page, + .soft_reset = genphy_soft_reset, + }, { +- PHY_ID_MATCH_EXACT(0x001cc849), ++ .match_phy_device = rtl8221b_vb_cg_match_phy_device, + .name = "RTL8221B-VB-CG 2.5Gbps PHY", + .get_features = rtl822x_get_features, + .config_init = rtl8221b_config_init, |