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realtek: dts: declare RTL8264 SerDes lane polarity on Hasivo S1100W-8XGT-SE

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The rtl826x PHY driver programs the system-side SerDes lane polarity of
the RTL8264 from the "rx-polarity"/"tx-polarity" devicetree properties,
defaulting to normal polarity when they are absent. The Hasivo
S1100W-8XGT-SE routes half of its high-speed lanes with inverted
polarity, which the vendor bootloader compensates for by setting
HSI_INV/HSO_INV (VEND1 0xC1 bits 6/7) per PHY. Without the properties
the driver clears those bits on every PHY (re-)initialization, which
kills the USXGMII link of every port: egress frames never reach the
wire while the port MAC MIB keeps counting them, and ingress dies with
it (issue #24359 for this board).

Declare the polarity for all eight PHYs, matching the values the
bootloader programs (read back on hardware in the U-Boot state:
alternating HSO_INV/HSI_INV per port pair). The already-supported
S1300WP declares these properties the same way.

Verified on hardware: on a pristine build both traffic directions are
dead; with only this devicetree change, ingress runs at full rate,
egress passes traffic, and the link now survives netifd restarts and
renegotiation. 10GBase-T ports also negotiate 10G instead of falling
back to 5G.

Assisted-by: Claude:claude-fable-5
Signed-off-by: Gennaro Cimmino <gcimmino@rayonra.net>
Link: https://github.com/openwrt/openwrt/pull/24393
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
This commit is contained in:
Gennaro Cimmino 2026-07-23 18:37:36 +02:00 committed by Markus Stockhausen
parent aac6df7bdc
commit 2c88e6eef3
1 changed files with 10 additions and 0 deletions
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10
target/linux/realtek/dts/rtl9303_hasivo_s1100w-8xgt-se.dts
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@ -6,6 +6,7 @@
#include <dt-bindings/input/input.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/phy/phy.h>
/ {
compatible = "hasivo,s1100w-8xgt-se", "realtek,rtl930x-soc";
@ -171,3 +172,12 @@
};
};
};
&phy0 { tx-polarity = <PHY_POL_INVERT>; };
&phy8 { rx-polarity = <PHY_POL_INVERT>; };
&phy16 { tx-polarity = <PHY_POL_INVERT>; };
&phy20 { rx-polarity = <PHY_POL_INVERT>; };
&phy24 { tx-polarity = <PHY_POL_INVERT>; };
&phy25 { rx-polarity = <PHY_POL_INVERT>; };
&phy26 { tx-polarity = <PHY_POL_INVERT>; };
&phy27 { rx-polarity = <PHY_POL_INVERT>; };