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From 8ea13a43a77dfb45c836de2d6c747f630dd75275 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 31 Oct 2018 15:02:18 +0000
Subject: [PATCH] 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: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 13 +++++++
.../boot/dts/overlays/adv7282m-overlay.dts | 9 +++--
.../boot/dts/overlays/adv728x-m-overlay.dts | 37 +++++++++++++++++++
4 files changed, 56 insertions(+), 4 deletions(-)
create mode 100644 arch/arm/boot/dts/overlays/adv728x-m-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -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 \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -274,6 +274,19 @@ Info: Analog Devices ADV7282M analogue
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
--- a/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
+++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
@@ -13,13 +13,13 @@
#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>;
@@ -43,7 +43,7 @@
#address-cells = <1>;
#size-cells = <0>;
csi1_ep: endpoint {
- remote-endpoint = <&adv7282_0>;
+ remote-endpoint = <&adv728x_0>;
};
};
};
@@ -71,6 +71,7 @@
};
__overrides__ {
- i2c_pins_28_29 = <0>,"+2-3";
+ i2c_pins_28_29 = <0>,"+2-3";
+ addr = <&adv728x>,"reg:0";
};
};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/adv728x-m-overlay.dts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// 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";
+ };
+};
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