openwrt/target/linux/bcm27xx/patches-4.19/950-0181-arm-dt-Add-DT-overlays-for-ADV7282M-OV5647-and-TC358.patch

From c3ea5332de058ee7b9139133f2f8103b6dff2478 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 31 Oct 2018 15:01:59 +0000
Subject: [PATCH] arm: dt: Add DT overlays for ADV7282M, OV5647, and
 TC358743

DT overlays to setup the above devices via i2c_arm and csi1.
(This currently does not use the i2c-mux-pinctrl driver to
dynamically switch the pinctrl)

tc358743 is tc358743 running at a default link frequency
of 972Mbit/s. This allows up to 1080P50 UYVY on 2 lanes.
There is a parameter to allow changing the link frequency,
but the only values supported by the driver are 297000000
for 594Mbit/s, and 486000000 for 972Mbit/s.
There is also a parameter to enable 4 lane mode (only
relevant to Compute Module (1 or 3) csi1).

tc358743-audio overlay enables I2S audio from the TC358743
to the Pi (SD to GPIO20, SCK to GPIO18, WFS to GPIO19).

ADV7282M is the Analog Devices analogue video to CSI bridge
chip.

OV5647 is the Pi V1.3 camera module. Currently the driver only
supports VGA 8bit Bayer and very few controls.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 arch/arm/boot/dts/overlays/Makefile           |   4 +
 arch/arm/boot/dts/overlays/README             |  51 ++++++++
 .../boot/dts/overlays/adv7282m-overlay.dts    |  76 ++++++++++++
 arch/arm/boot/dts/overlays/ov5647-overlay.dts |  87 ++++++++++++++
 .../dts/overlays/tc358743-audio-overlay.dts   |  52 ++++++++
 .../boot/dts/overlays/tc358743-overlay.dts    | 112 ++++++++++++++++++
 6 files changed, 382 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/adv7282m-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/ov5647-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/tc358743-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -6,6 +6,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	ads1015.dtbo \
 	ads1115.dtbo \
 	ads7846.dtbo \
+	adv7282m.dtbo \
 	akkordion-iqdacplus.dtbo \
 	allo-boss-dac-pcm512x-audio.dtbo \
 	allo-digione.dtbo \
@@ -81,6 +82,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	mmc.dtbo \
 	mpu6050.dtbo \
 	mz61581.dtbo \
+	ov5647.dtbo \
 	papirus.dtbo \
 	pi3-act-led.dtbo \
 	pi3-disable-bt.dtbo \
@@ -132,6 +134,8 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	spi2-3cs.dtbo \
 	superaudioboard.dtbo \
 	sx150x.dtbo \
+	tc358743.dtbo \
+	tc358743-audio.dtbo \
 	tinylcd35.dtbo \
 	uart0.dtbo \
 	uart1.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -267,6 +267,15 @@ Params: cs                      SPI bus
         www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
 
 
+Name:   adv7282m
+Info:   Analog Devices ADV7282M analogue video to CSI2 bridge.
+        Uses Unicam1, which is the standard camera connector on most Pi
+        variants.
+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.
+
+
 Name:   akkordion-iqdacplus
 Info:   Configures the Digital Dreamtime Akkordion Music Player (based on the
         OEM IQAudIO DAC+ or DAC Zero module).
@@ -1284,6 +1293,23 @@ Params: speed                   Display
         xohms                   Touchpanel sensitivity (X-plate resistance)
 
 
+Name:   ov5647
+Info:   Omnivision OV5647 camera module.
+        Uses Unicam 1, which is the standard camera connector on most Pi
+        variants.
+Load:   dtoverlay=ov5647,<param>=<val>
+Params: cam0-pwdn               GPIO used to control the sensor powerdown line.
+
+        cam0-led                GPIO used to control the sensor led
+                                Both these fields should be automatically filled
+                                in by the firmware to reflect the default GPIO
+                                configuration of the particular Pi variant in
+                                use.
+
+        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.
+
+
 Name:   papirus
 Info:   PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
 Load:   dtoverlay=papirus,<param>=<val>
@@ -1893,6 +1919,31 @@ Params: sx150<x>-<n>-<m>        Enables
                                 connected.
 
 
+Name:   tc358743
+Info:   Toshiba TC358743 HDMI to CSI-2 bridge chip.
+        Uses Unicam 1, which is the standard camera connector on most Pi
+        variants.
+Load:   dtoverlay=tc358743,<param>=<val>
+Params: 4lane                   Use 4 lanes (only applicable to Compute Modules
+                                CAM1 connector).
+
+        link-frequency          Set the link frequency. Only values of 297000000
+                                (574Mbit/s) and 486000000 (972Mbit/s - default)
+                                are supported by the driver.
+
+        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.
+
+
+Name:   tc358743-audio
+Info:   Used in combination with the tc358743-fast overlay to route the audio
+        from the TC358743 over I2S to the Pi.
+        Wiring is LRCK/WFS to GPIO 19, BCK/SCK to GPIO 18, and DATA/SD to GPIO
+        20.
+Load:   dtoverlay=tc358743-audio,<param>=<val>
+Params: card-name               Override the default, "tc358743", card name.
+
+
 Name:   tinylcd35
 Info:   3.5" Color TFT Display by www.tinylcd.com
         Options: Touch, RTC, keypad
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/adv7282m-overlay.dts
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for Analog Devices ADV7282-M video to CSI2 bridge on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			adv7282: adv7282@21 {
+				compatible = "adi,adv7282-m";
+				reg = <0x21>;
+				status = "okay";
+				clock-frequency = <24000000>;
+				port {
+					adv7282_0: endpoint {
+						remote-endpoint = <&csi1_ep>;
+						clock-lanes = <0>;
+						data-lanes = <1>;
+						link-frequencies =
+							/bits/ 64 <297000000>;
+
+						mclk-frequency = <12000000>;
+					};
+				};
+			};
+		};
+	};
+	fragment@1 {
+		target = <&csi1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				csi1_ep: endpoint {
+					remote-endpoint = <&adv7282_0>;
+				};
+			};
+		};
+	};
+	fragment@2 {
+		target = <&i2c0_pins>;
+		__dormant__ {
+			brcm,pins = <28 29>;
+			brcm,function = <4>; /* alt0 */
+		};
+
+	};
+	fragment@3 {
+		target = <&i2c0_pins>;
+		__overlay__ {
+			brcm,pins = <44 45>;
+			brcm,function = <5>; /* alt1 */
+		};
+	};
+	fragment@4 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		i2c_pins_28_29 = <0>,"+2-3";
+	};
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for OV5647 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			ov5647: ov5647@36 {
+				compatible = "ov5647";
+				reg = <0x36>;
+				status = "okay";
+
+				pwdn-gpios = <&gpio 41 1>, <&gpio 32 1>;
+				clocks = <&ov5647_clk>;
+
+				ov5647_clk: camera-clk {
+					compatible = "fixed-clock";
+					#clock-cells = <0>;
+					clock-frequency = <25000000>;
+				};
+
+				port {
+					ov5647_0: endpoint {
+						remote-endpoint = <&csi1_ep>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+						clock-noncontinuous;
+						link-frequencies =
+							/bits/ 64 <297000000>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&csi1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				csi1_ep: endpoint {
+					remote-endpoint = <&ov5647_0>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0_pins>;
+		__dormant__ {
+			brcm,pins = <28 29>;
+			brcm,function = <4>; /* alt0 */
+		};
+	};
+	fragment@3 {
+		target = <&i2c0_pins>;
+		__overlay__ {
+			brcm,pins = <44 45>;
+			brcm,function = <5>; /* alt1 */
+		};
+	};
+	fragment@4 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		i2c_pins_28_29 = <0>,"+4-5";
+		cam0-pwdn = <&ov5647>,"pwdn-gpios:4";
+		cam0-led = <&ov5647>,"pwdn-gpios:16";
+	};
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/tc358743-audio-overlay.dts
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions to add I2S audio from the Toshiba TC358743 HDMI to CSI2 bridge.
+// Requires tc358743 overlay to have been loaded to actually function.
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target-path = "/";
+		__overlay__ {
+			tc358743_codec: tc358743-codec {
+				#sound-dai-cells = <0>;
+				compatible = "linux,spdif-dir";
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&sound>;
+		sound_overlay: __overlay__ {
+			compatible = "simple-audio-card";
+			simple-audio-card,format = "i2s";
+			simple-audio-card,name = "tc358743";
+			simple-audio-card,bitclock-master = <&dailink0_slave>;
+			simple-audio-card,frame-master = <&dailink0_slave>;
+			status = "okay";
+
+			simple-audio-card,cpu {
+				sound-dai = <&i2s>;
+				dai-tdm-slot-num = <2>;
+				dai-tdm-slot-width = <32>;
+			};
+			dailink0_slave: simple-audio-card,codec {
+				sound-dai = <&tc358743_codec>;
+			};
+		};
+	};
+
+	__overrides__ {
+		card-name = <&sound_overlay>,"simple-audio-card,name";
+	};
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/tc358743-overlay.dts
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for Toshiba TC358743 HDMI to CSI2 bridge on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			tc358743@0f {
+				compatible = "toshiba,tc358743";
+				reg = <0x0f>;
+				status = "okay";
+
+				clocks = <&tc358743_clk>;
+				clock-names = "refclk";
+
+				tc358743_clk: bridge-clk {
+					compatible = "fixed-clock";
+					#clock-cells = <0>;
+					clock-frequency = <27000000>;
+				};
+
+				port {
+					tc358743: endpoint {
+						remote-endpoint = <&csi1_ep>;
+						clock-lanes = <0>;
+						clock-noncontinuous;
+						link-frequencies =
+							/bits/ 64 <486000000>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&csi1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				csi1_ep: endpoint {
+					remote-endpoint = <&tc358743>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			tc358743@0f {
+				port {
+					endpoint {
+						data-lanes = <1 2>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@3 {
+		target = <&i2c_vc>;
+		__dormant__ {
+			tc358743@0f {
+				port {
+					endpoint {
+						data-lanes = <1 2 3 4>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c0_pins>;
+		__dormant__ {
+			brcm,pins = <28 29>;
+			brcm,function = <4>; /* alt0 */
+		};
+	};
+	fragment@5 {
+		target = <&i2c0_pins>;
+		__overlay__ {
+			brcm,pins = <44 45>;
+			brcm,function = <5>; /* alt1 */
+		};
+	};
+	fragment@6 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	__overrides__ {
+		i2c_pins_28_29 = <0>,"+4-5";
+		4lane = <0>, "-2+3";
+		link-frequency = <&tc358743>,"link-frequencies#0";
+	};
+};