Commit f4a6fb4d authored by Noralf Trønnes's avatar Noralf Trønnes Committed by popcornmix
Browse files

BCM270X_DT: Add PaPiRus overlay 



Add Device Tree overlay for the PaPiRus ePaper Screens by Pi Supply.

Signed-off-by: default avatarNoralf Trønnes <noralf@tronnes.org>
parent 250c201c

arch/arm/boot/dts/overlays/Makefile

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@@ -64,6 +64,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ 
	mmc.dtbo \

	mpu6050.dtbo \

	mz61581.dtbo \

	papirus.dtbo \

	pi3-act-led.dtbo \

	pi3-disable-bt.dtbo \

	pi3-disable-wifi.dtbo \

arch/arm/boot/dts/overlays/README

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@@ -1001,6 +1001,17 @@ Params: speed Display SPI bus speed 
        xohms                   Touchpanel sensitivity (X-plate resistance)





Name:   papirus

Info:   PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)

Load:   dtoverlay=papirus,<param>=<val>

Params: panel                   Display panel (required):

                                1.44": e1144cs021

                                2.0":  e2200cs021

                                2.7":  e2271cs021



        speed                   Display SPI bus speed





[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]

arch/arm/boot/dts/overlays/papirus-overlay.dts

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/* PaPiRus ePaper Screen by Pi Supply */



/dts-v1/;

/plugin/;



/ {

	compatible = "brcm,bcm2708";



	fragment@0 {

		target = <&i2c_arm>;

		__overlay__ {

			#address-cells = <1>;

			#size-cells = <0>;

			status = "okay";



			display_temp: lm75@48 {

				compatible = "lm75b";

				reg = <0x48>;

				status = "okay";

				#thermal-sensor-cells = <0>;

			};

		};

	};



	fragment@1 {

		target-path = "/";

		__overlay__ {

			thermal-zones {

				display {

					polling-delay-passive = <0>;

					polling-delay = <0>;

					thermal-sensors = <&display_temp>;

				};

			};

		};

	};



	fragment@2 {

		target = <&spi0>;

		__overlay__ {

			status = "okay";



			spidev@0{

				status = "disabled";

			};

		};

	};



	fragment@3 {

		target = <&gpio>;

		__overlay__ {

			repaper_pins: repaper_pins {

				brcm,pins = <14 15 23 24 25>;

				brcm,function = <1 1 1 1 0>; /* out out out out in */

			};

		};

	};



	fragment@4 {

		target = <&spi0>;

		__overlay__ {

			/* needed to avoid dtc warning */

			#address-cells = <1>;

			#size-cells = <0>;



			repaper: repaper@0{

				compatible = "not_set";

				reg = <0>;

				pinctrl-names = "default";

				pinctrl-0 = <&repaper_pins>;



				spi-max-frequency = <8000000>;



				panel-on-gpios = <&gpio 23 0>;

				border-gpios = <&gpio 14 0>;

				discharge-gpios = <&gpio 15 0>;

				reset-gpios = <&gpio 24 0>;

				busy-gpios = <&gpio 25 0>;



				repaper-thermal-zone = "display";

			};

		};

	};



	__overrides__ {

		panel = <&repaper>, "compatible";

		speed = <&repaper>, "spi-max-frequency:0";

	};

};