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openwrt/target/linux/realtek/dts/rtl8382_panasonic_m16eg-pn28160k.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 OR MIT
#include "rtl838x.dtsi"
#include "rtl83xx_panasonic_mxxeg-pn28xx0k.dtsi"
#include <dt-bindings/interrupt-controller/irq.h>
/ {
compatible = "panasonic,m16eg-pn28160k", "realtek,rtl8382-soc";
model = "Panasonic Switch-M16eG PN28160K";
aliases {
led-boot = &led_status_eco_green;
led-failsafe = &led_status_eco_amber;
led-running = &led_status_eco_green;
led-upgrade = &led_status_eco_green;
};
/*
* sfp0/1 are "combo" port with each TP port (23/24), and they are
* connected to the RTL8218FB. Currently, there is no support for
* the chip and only TP ports work by the RTL8218D support.
*/
sfp0: sfp-p23 {
compatible = "sff,sfp";
i2c-bus = <&i2c0>;
tx-fault-gpio = <&gpio1 0 GPIO_ACTIVE_HIGH>;
tx-disable-gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;
mod-def0-gpio = <&gpio1 2 GPIO_ACTIVE_LOW>;
los-gpio = <&gpio1 3 GPIO_ACTIVE_HIGH>;
};
sfp1: sfp-p24 {
compatible = "sff,sfp";
i2c-bus = <&i2c1>;
tx-fault-gpio = <&gpio1 4 GPIO_ACTIVE_HIGH>;
tx-disable-gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>;
mod-def0-gpio = <&gpio1 6 GPIO_ACTIVE_LOW>;
los-gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>;
};
};
&leds {
led_status_eco_amber: led-5 {
gpios = <&gpio2 1 GPIO_ACTIVE_LOW>;
color = <LED_COLOR_ID_AMBER>;
function = LED_FUNCTION_STATUS;
function-enumerator = <1>;
};
led_status_eco_green: led-6 {
gpios = <&gpio2 2 GPIO_ACTIVE_LOW>;
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_STATUS;
function-enumerator = <2>;
};
};
&i2c_gpio_0 {
scl-gpios = <&gpio0 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio0 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
};
&i2c_gpio_1 {
scl-gpios = <&gpio0 12 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio0 13 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
};
&gpio2 {
interrupt-controller;
#interrupt-cells = <2>;
interrupt-parent = <&gpio0>;
interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
/*
* GPIO12 (IO1_4): RTL8218FB
*
* This GPIO pin should be specified as "reset-gpio" in mdio node, but
* RTL8218FB phy won't be configured on RTL8218D support in the current
* phy driver. So, ethernet ports on the phy will be broken after hard-
* resetting.
* (RTL8218FB phy will be detected as RTL8218D by the phy driver)
* At the moment, configure this GPIO pin as gpio-hog to avoid breaking
* by resetting.
*/
ext_switch_reset {
gpio-hog;
gpios = <12 GPIO_ACTIVE_HIGH>;
output-high;
line-name = "ext-switch-reset";
};
};
&i2c_switch {
i2c0: i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
};
i2c1: i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
};
};
&mdio_bus0 {
PHY_C22(8, 8)
PHY_C22(9, 9)
PHY_C22(10, 10)
PHY_C22(11, 11)
PHY_C22(12, 12)
PHY_C22(13, 13)
PHY_C22(14, 14)
PHY_C22(15, 15)
/* RTL8218FB */
PHY_C22(16, 16)
PHY_C22(17, 17)
PHY_C22(18, 18)
PHY_C22(19, 19)
PHY_C22(20, 20)
PHY_C22(21, 21)
PHY_C22(22, 22)
PHY_C22(23, 23)
};
&switch0 {
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
SWITCH_PORT(8, 1, internal)
SWITCH_PORT(9, 2, internal)
SWITCH_PORT(10, 3, internal)
SWITCH_PORT(11, 4, internal)
SWITCH_PORT(12, 5, internal)
SWITCH_PORT(13, 6, internal)
SWITCH_PORT(14, 7, internal)
SWITCH_PORT(15, 8, internal)
SWITCH_PORT_SDS(16, 9, 2, 0, qsgmii)
SWITCH_PORT_SDS(17, 10, 2, 1, qsgmii)
SWITCH_PORT_SDS(18, 11, 2, 2, qsgmii)
SWITCH_PORT_SDS(19, 12, 2, 3, qsgmii)
SWITCH_PORT_SDS(20, 13, 3, 0, qsgmii)
SWITCH_PORT_SDS(21, 14, 3, 1, qsgmii)
SWITCH_PORT_SDS(22, 15, 3, 2, qsgmii)
SWITCH_PORT_SDS(23, 16, 3, 3, qsgmii)
port@28 {
ethernet = <&ethernet0>;
reg = <28>;
phy-mode = "internal";
fixed-link {
speed = <1000>;
full-duplex;
};
};
};
};