Commit c90694c0 authored by Dave Stevenson's avatar Dave Stevenson Committed by Phil Elwell
Browse files

dtoverlays: Add support for ADV7280-M, ADV7281-M and ADV7281-MA chips. 



The driver that supports the ADV7282-M also supports the ADV7280-M,
ADV7281-M, and ADV7281-MA.
The 7280-M exposes 8 analogue inputs. The 7281-M doesn't have the
I2P deinterlacing block. The 7281-MA has 8 inputs but no I2P.
Otherwise they are the same as ADV7282-M.

Adds a new overlay "adv728x" that includes the existing adv7282
overlay but adds several parameters to modify the behaviour.

Adds a new addr parameter to allow the I2C address to be changed.
(the chip has an address select pin to change between 0x20 and 0x21).

Signed-off-by: default avatarDave Stevenson <dave.stevenson@raspberrypi.org>
parent ceeaae1f

arch/arm/boot/dts/overlays/Makefile

+1 −0
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@@ -7,6 +7,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ 
	ads1115.dtbo \

	ads7846.dtbo \

	adv7282m.dtbo \

	adv728x-m.dtbo \

	akkordion-iqdacplus.dtbo \

	allo-boss-dac-pcm512x-audio.dtbo \

	allo-digione.dtbo \

arch/arm/boot/dts/overlays/README

+13 −0
Original line number Diff line number Diff line
@@ -274,6 +274,19 @@ Info: Analog Devices ADV7282M analogue video to CSI2 bridge. 
Load:   dtoverlay=adv7282m,<param>=<val>

Params: i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.

                                This is required for Pi B+, 2, 0, and 0W.

        addr                    Overrides the I2C address (default 0x21)





Name:   adv728x-m

Info:   Analog Devices ADV728[0|1|2]-M analogue video to CSI2 bridges.

        This is a wrapper for adv7282m, and defaults to ADV7282M.

Load:   dtoverlay=adv728x-m,<param>=<val>

Params: i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.

                                This is required for Pi B+, 2, 0, and 0W.

        addr                    Overrides the I2C address (default 0x21)

        adv7280m                Select ADV7280-M.

        adv7281m                Select ADV7281-M.

        adv7281ma               Select ADV7281-MA.





Name:   akkordion-iqdacplus

arch/arm/boot/dts/overlays/adv7282m-overlay.dts

+5 −4
Original line number Diff line number Diff line
@@ -12,13 +12,13 @@ 
			#size-cells = <0>;

			status = "okay";



			adv7282: adv7282@21 {

			adv728x: adv728x@21 {

				compatible = "adi,adv7282-m";

				reg = <0x21>;

				status = "okay";

				clock-frequency = <24000000>;

				port {

					adv7282_0: endpoint {

					adv728x_0: endpoint {

						remote-endpoint = <&csi1_ep>;

						clock-lanes = <0>;

						data-lanes = <1>;
@@ -42,7 +42,7 @@ 
				#address-cells = <1>;

				#size-cells = <0>;

				csi1_ep: endpoint {

					remote-endpoint = <&adv7282_0>;

					remote-endpoint = <&adv728x_0>;

				};

			};

		};
@@ -71,5 +71,6 @@ 


	__overrides__ {

		i2c_pins_28_29 =	<0>,"+2-3";

		addr =			<&adv728x>,"reg:0";

	};

};

arch/arm/boot/dts/overlays/adv728x-m-overlay.dts

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+36 −0
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// Definitions for Analog Devices ADV728[0|1|2]-M video to CSI2 bridges on VC

// I2C bus



#include "adv7282m-overlay.dts"



/{

	compatible = "brcm,bcm2708";



	// Fragment numbers deliberately high to avoid conflicts with the

	// included adv7282m overlay file.



	fragment@101 {

		target = <&adv728x>;

		__dormant__ {

			compatible = "adi,adv7280-m";

		};

	};

	fragment@102 {

		target = <&adv728x>;

		__dormant__ {

			compatible = "adi,adv7281-m";

		};

	};

	fragment@103 {

		target = <&adv728x>;

		__dormant__ {

			compatible = "adi,adv7281-ma";

		};

	};



	__overrides__ {

		adv7280m = <0>, "+101";

		adv7281m = <0>, "+102";

		adv7281ma = <0>, "+103";

	};

};