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ARM: dts: Add support for pcb8385

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Add basic support for pcb8385 [1]. It is a modular board which allows
to add different daughter cards on which there are different PHYs.
This adds support for UART, LEDs and I2C.

[1] https://www.microchip.com/en-us/development-tool/ev83e85a

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://lore.kernel.org/r/20251208083545.3642168-3-horatiu.vultur@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
This commit is contained in:
Horatiu Vultur 2025-12-08 09:35:45 +01:00 committed by Claudiu Beznea
parent d9802af199
commit a8e30c9d85
2 changed files with 133 additions and 1 deletions
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3
arch/arm/boot/dts/microchip/Makefile
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@ -102,4 +102,5 @@ dtb-$(CONFIG_SOC_LAN966) += \
lan966x-kontron-kswitch-d10-mmt-8g.dtb \
lan966x-pcb8290.dtb \
lan966x-pcb8291.dtb \
lan966x-pcb8309.dtb
lan966x-pcb8309.dtb \
lan966x-pcb8385.dtb

131
arch/arm/boot/dts/microchip/lan966x-pcb8385.dts Normal file
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@ -0,0 +1,131 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* lan966x-pcb8385.dts - Device Tree file for PCB8385
*/
/dts-v1/;
#include "lan966x.dtsi"
#include "dt-bindings/phy/phy-lan966x-serdes.h"
/ {
model = "Microchip EVB - LAN9668";
compatible = "microchip,lan9668-pcb8385", "microchip,lan9668", "microchip,lan966";
aliases {
serial0 = &usart3;
};
chosen {
stdout-path = "serial0:115200n8";
};
gpio-restart {
compatible = "gpio-restart";
gpios = <&gpio 59 GPIO_ACTIVE_LOW>;
open-source;
priority = <200>;
};
leds {
compatible = "gpio-leds";
led-p1-green {
label = "cu0:green";
gpios = <&sgpio_out 2 0 GPIO_ACTIVE_LOW>;
default-state = "off";
};
led-p1-yellow {
label = "cu0:yellow";
gpios = <&sgpio_out 2 1 GPIO_ACTIVE_LOW>;
default-state = "off";
};
led-p2-green {
label = "cu1:green";
gpios = <&sgpio_out 3 0 GPIO_ACTIVE_LOW>;
default-state = "off";
};
led-p2-yellow {
label = "cu1:yellow";
gpios = <&sgpio_out 3 1 GPIO_ACTIVE_LOW>;
default-state = "off";
};
};
};
&aes {
status = "reserved"; /* Reserved by secure OS */
};
&flx0 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
status = "okay";
};
&flx3 {
atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_USART>;
status = "okay";
};
&gpio {
fc0_b_pins: fc0-b-pins {
/* SCL, SDA */
pins = "GPIO_25", "GPIO_26";
function = "fc0_b";
};
fc3_b_pins: fc3-b-pins {
/* RX, TX */
pins = "GPIO_52", "GPIO_53";
function = "fc3_b";
};
sgpio_a_pins: sgpio-a-pins {
/* SCK, D0, D1, LD */
pins = "GPIO_32", "GPIO_33", "GPIO_34", "GPIO_35";
function = "sgpio_a";
};
};
&i2c0 {
pinctrl-0 = <&fc0_b_pins>;
pinctrl-names = "default";
dmas = <0>, <0>;
i2c-analog-filter;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
i2c-sda-hold-time-ns = <1500>;
status = "okay";
eeprom@54 {
compatible = "atmel,24c01";
reg = <0x54>;
};
eeprom@55 {
compatible = "atmel,24c01";
reg = <0x55>;
};
};
&sgpio {
pinctrl-0 = <&sgpio_a_pins>;
pinctrl-names = "default";
microchip,sgpio-port-ranges = <0 3>;
status = "okay";
gpio@0 {
ngpios = <64>;
};
gpio@1 {
ngpios = <64>;
};
};
&usart3 {
pinctrl-0 = <&fc3_b_pins>;
pinctrl-names = "default";
status = "okay";
};