mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
28b3a5e6b5
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>
64 lines
1.8 KiB
Diff
64 lines
1.8 KiB
Diff
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,
|