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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
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@@ -11,6 +11,7 @@
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 #include "sama5d2-pinfunc.h"
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 #include <dt-bindings/mfd/atmel-flexcom.h>
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 #include <dt-bindings/gpio/gpio.h>
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+#include <dt-bindings/input/input.h>
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 #include <dt-bindings/pinctrl/at91.h>
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 / {
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@@ -18,9 +19,9 @@
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 	compatible = "atmel,sama5d2-ptc_ek", "atmel,sama5d2", "atmel,sama5";
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 	aliases {
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-		serial0 = &uart0;
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-		i2c0	= &i2c0;
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-		i2c1	= &i2c1;
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+		serial0 = &uart0;	/* DBGU */
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+		i2c0	= &i2c0;	/* mikroBUS 1 */
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+		i2c1	= &i2c1;	/* XPRO EXT1 */
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 		i2c2	= &i2c2;
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 	};
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@@ -178,8 +179,11 @@
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 			i2c0: i2c@f8028000 {
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 				dmas = <0>, <0>;
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-				pinctrl-names = "default";
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+				pinctrl-names = "default", "gpio";
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 				pinctrl-0 = <&pinctrl_i2c0_default>;
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+				pinctrl-1 = <&pinctrl_i2c0_gpio>;
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+				sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
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+				scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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 				status = "okay";
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 			};
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@@ -188,23 +192,18 @@
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 				status = "okay";
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 				i2c2: i2c@600 {
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-					compatible = "atmel,sama5d2-i2c";
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-					reg = <0x600 0x200>;
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-					interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>;
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 					dmas = <0>, <0>;
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-					dma-names = "tx", "rx";
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-					#address-cells = <1>;
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-					#size-cells = <0>;
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-					clocks = <&flx0_clk>;
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-					pinctrl-names = "default";
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+					pinctrl-names = "default", "gpio";
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 					pinctrl-0 = <&pinctrl_flx0_default>;
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-					atmel,fifo-size = <16>;
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+					pinctrl-1 = <&pinctrl_flx0_gpio>;
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+					sda-gpios = <&pioA PIN_PB28 GPIO_ACTIVE_HIGH>;
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+					scl-gpios = <&pioA PIN_PB29 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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 					status = "okay";
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 				};
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 			};
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 			shdwc@f8048010 {
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-				atmel,shdwc-debouncer = <976>;
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+				debounce-delay-us = <976>;
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 				input@0 {
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 					reg = <0>;
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@@ -224,8 +223,11 @@
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 			i2c1: i2c@fc028000 {
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 				dmas = <0>, <0>;
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-				pinctrl-names = "default";
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+				pinctrl-names = "default", "gpio";
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 				pinctrl-0 = <&pinctrl_i2c1_default>;
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+				pinctrl-1 = <&pinctrl_i2c1_gpio>;
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+				sda-gpios = <&pioA PIN_PC6 GPIO_ACTIVE_HIGH>;
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+				scl-gpios = <&pioA PIN_PC7 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
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 				status = "okay";
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 				at24@50 {
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@@ -242,15 +244,33 @@
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 					bias-disable;
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 				};
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+				pinctrl_flx0_gpio: flx0_gpio {
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+					pinmux = <PIN_PB28__GPIO>,
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+						 <PIN_PB29__GPIO>;
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+					bias-disable;
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+				};
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+
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 				pinctrl_i2c0_default: i2c0_default {
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 					pinmux = <PIN_PD21__TWD0>,
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 						 <PIN_PD22__TWCK0>;
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 					bias-disable;
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 				};
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+				pinctrl_i2c0_gpio: i2c0_gpio {
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+					pinmux = <PIN_PD21__GPIO>,
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+						 <PIN_PD22__GPIO>;
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+					bias-disable;
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+				};
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+
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 				pinctrl_i2c1_default: i2c1_default {
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 					pinmux = <PIN_PC6__TWD1>,
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 						 <PIN_PC7__TWCK1>;
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+					bias-disable;
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+				};
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+
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+				pinctrl_i2c1_gpio: i2c1_gpio {
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+					pinmux = <PIN_PC6__GPIO>,
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+						 <PIN_PC7__GPIO>;
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 					bias-disable;
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 				};
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@@ -384,7 +404,8 @@
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 		bp1 {
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 			label = "PB_USER";
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 			gpios = <&pioA PIN_PA10 GPIO_ACTIVE_LOW>;
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-			linux,code = <0x104>;
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+			linux,code = <KEY_PROG1>;
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+			wakeup-source;
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 		};
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 	};
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