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openwrt/target/linux/realtek/dts/rtl8380_netgear_gs310tp-v1.dts
Jonas Jelonek 43562f97e7
realtek: dts: add link index cell to pcs-handle phandles
A SerDes can host multiple PCS links: QSGMII binds four ports to one
SerDes, USXGMII variants up to eight. Today pcs-handle references the
SerDes as a whole, with no way to express which link inside the SerDes
a port wants. The driver gets away with this because it carries its own
port->link bookkeeping and the link slot is implicit in DSA's port
iteration order -- functional, but the wiring information lives nowhere
in DT.

The upcoming fwnode_pcs migration moves PCS lookup to the generic
fwnode provider API, which disambiguates multiple instances per fwnode
via phandle cells. To make that landable as small, code-only commits,
the DT needs to carry the link index ahead of time.

Bump #pcs-cells from 0 to 1 on every SerDes node in the four SoC DTSIs
and append the link cell to every pcs-handle reference across boards
and the SWITCH_PORT_* macros. Cell values match the existing wiring:
0 for single-link SerDes (10GBase-R, SGMII, fiber, single-link
USXGMII), 0..3 per SerDes for QSGMII and USXGMII-QX, 0..7 for the
RTL9311 octal USXGMII layout.

No code reads the new cell yet -- of_parse_phandle_with_args() in the
PCS driver already cooperates with cells = 0 or 1, and the DSA glue
uses of_parse_phandle() which ignores cells entirely. The change is
runtime-neutral on its own; it exists so the follow-up code patches
can be a few lines each instead of dragging a bridge counter into the
driver to invent slot numbers DT could have provided directly.

Link: https://github.com/openwrt/openwrt/pull/23539
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
2026-05-31 12:52:40 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
#include "rtl8380_netgear_gigabit.dtsi"
#include <dt-bindings/leds/common.h>
/ {
compatible = "netgear,gs310tp-v1", "realtek,rtl838x-soc";
model = "Netgear GS310TP v1";
aliases {
led-boot = &led_power_green;
led-failsafe = &led_power_amber;
led-running = &led_power_green;
led-upgrade = &led_power_amber;
};
leds {
compatible = "gpio-leds";
led_power_amber: led-0 {
color = <LED_COLOR_ID_AMBER>;
function = LED_FUNCTION_POWER;
gpios = <&gpio1 32 GPIO_ACTIVE_LOW>;
};
led_power_green: led-1 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_POWER;
gpios = <&gpio1 31 GPIO_ACTIVE_LOW>;
};
};
};
&gpio1 {
poe-enable {
gpio-hog;
gpios = <10 GPIO_ACTIVE_HIGH>;
output-high;
line-name = "poe-enable";
};
};
&firmware {
openwrt,ih-magic = <0x4e474335>;
};
&uart1 {
status = "okay";
};
&switch0 {
ethernet-ports {
/* TODO: fixed link SFP is not right */
port24: port@24 {
reg = <24>;
label = SWITCH_PORT_LABEL(9);
pcs-handle = <&serdes4 0>;
phy-mode = "1000base-x";
fixed-link {
speed = <1000>;
full-duplex;
};
};
port26: port@26 {
reg = <26>;
label = SWITCH_PORT_LABEL(10);
pcs-handle = <&serdes5 0>;
phy-mode = "1000base-x";
fixed-link {
speed = <1000>;
full-duplex;
};
};
};
};