[openwrt/openwrt] realtek: 5.15: rtl93xx: support 2500baseT and 5000baseT on USXGMII links

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/4cbfbb2edaab71431bce6a228d16e9840b42ae2d

commit 4cbfbb2edaab71431bce6a228d16e9840b42ae2d
Author: Tobias Schramm <tobias at t-sys.eu>
AuthorDate: Sat Sep 23 13:46:40 2023 +0200

    realtek: 5.15: rtl93xx: support 2500baseT and 5000baseT on USXGMII links
    
    The USXGMII implementation of Realtek switches can not only support
    10GbE but also 2.5Gb and 5Gb on top of the usual data rates.
    Mark those as supported to allow them to be negotiated.
    
    This change has been tested on a ZyXEL XGS1250-12 with the following link
    partners:
     - NWA50AX Pro (2.5Gb)
     - RTL8152 USB NIC (2.5Gb)
     - AQC111 USB NIC (2.5Gb & 5Gb)
    
    Gbit and 10GbE has also been tested to still work fine with a variety of
    devices.
    
    Signed-off-by: Tobias Schramm <tobias at t-sys.eu>
    (cherry picked from commit cd56a682326f9de4d77ee3afb99d13d25c478c08)
---
 target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
index 0af98e4470..063ce9b8c5 100644
--- a/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
+++ b/target/linux/realtek/files-5.15/drivers/net/dsa/rtl83xx/dsa.c
@@ -429,8 +429,11 @@ static void rtl93xx_phylink_validate(struct dsa_switch *ds, int port,
 		phylink_set(mask, 10000baseCR_Full);
 	}
 
-	if (state->interface == PHY_INTERFACE_MODE_USXGMII)
+	if (state->interface == PHY_INTERFACE_MODE_USXGMII) {
+		phylink_set(mask, 2500baseT_Full);
+		phylink_set(mask, 5000baseT_Full);
 		phylink_set(mask, 10000baseT_Full);
+	}
 
 	phylink_set(mask, 10baseT_Half);
 	phylink_set(mask, 10baseT_Full);