Merge tag 'at91-dt-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into soc/dt

Microchip AT91 device tree updates for v6.20

This update includes:
- update the SAMA7D65 flexcom nodes to add the missing i2c, spi, and usart
  child nodes; the flexcom child nodes were also updated with DMA
  properties
- add basic support for the PCB8385 board, based on LAN966X SoC
- drop usb_a9g20-dab-mmx.dtsi as it is not used anywhere in the tree

* tag 'at91-dt-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  ARM: dts: microchip: Drop usb_a9g20-dab-mmx.dtsi
  ARM: dts: Add support for pcb8385
  dt-bindings: arm: at91: add lan966 pcb8385 board
  ARM: dts: microchip: sama7d65: add missing flexcom nodes
  ARM: dts: microchip: sama7d65: add fifo-size to usart
  ARM: dts: microchip: sama7d65: add dma properties to usart6

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: arndb

Documentation/devicetree/bindings/arm/atmel-at91.yaml

@@ -235,9 +235,11 @@ properties:
           - const: microchip,lan9662
           - const: microchip,lan966
 
-      - description: Microchip LAN9668 PCB8290 Evaluation Board.
+      - description: Microchip LAN9668 Evaluation Board.
         items:
-          - const: microchip,lan9668-pcb8290
+          - enum:
+              - microchip,lan9668-pcb8290
+              - microchip,lan9668-pcb8385
           - const: microchip,lan9668
           - const: microchip,lan966
 

arch/arm/boot/dts/microchip/Makefile

@@ -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

arch/arm/boot/dts/microchip/lan966x-pcb8385.dts

@@ -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";
+};