openwrt/target/linux/bcm27xx/patches-5.10/950-0651-overlays-Add-dpi18cpadhi-vc4-kms-dpi-at056tn53v1.patch

From 5f7c6159c8bfa019b3d8d0fd7af930187f29dbad Mon Sep 17 00:00:00 2001
From: Joerg Quinten <aBUGSworstnightmare@gmail.com>
Date: Mon, 21 Jun 2021 16:10:32 +0200
Subject: [PATCH] overlays: Add dpi18cpadhi, vc4-kms-dpi-at056tn53v1

Signed-off-by: Joerg Quinten <aBUGSworstnightmare@gmail.com>
---
 arch/arm/boot/dts/bcm270x.dtsi                | 13 ++++++
 arch/arm/boot/dts/overlays/Makefile           |  2 +
 arch/arm/boot/dts/overlays/README             | 15 +++++++
 .../boot/dts/overlays/dpi18cpadhi-overlay.dts | 26 +++++++++++
 .../vc4-kms-dpi-at056tn53v1-overlay.dts       | 44 +++++++++++++++++++
 5 files changed, 100 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts
 create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts

--- a/arch/arm/boot/dts/bcm270x.dtsi
+++ b/arch/arm/boot/dts/bcm270x.dtsi
@@ -164,6 +164,19 @@
 &gpio {
 	interrupts = <2 17>, <2 18>;
 
+	dpi_18bit_cpadhi_gpio0: dpi_18bit_cpadhi_gpio0 {
+		brcm,pins = <0 1 2 3 4 5 6 7 8 9
+			     12 13 14 15 16 17
+			     20 21 22 23 24 25>;
+		brcm,function = <BCM2835_FSEL_ALT2>;
+		brcm,pull = <0>; /* no pull */
+	};
+	dpi_18bit_cpadhi_gpio2: dpi_18bit_cpadhi_gpio2 {
+		brcm,pins = <2 3 4 5 6 7 8 9
+			     12 13 14 15 16 17
+			     20 21 22 23 24 25>;
+		brcm,function = <BCM2835_FSEL_ALT2>;
+	};
 	dpi_18bit_gpio0: dpi_18bit_gpio0 {
 		brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11
 			     12 13 14 15 16 17 18 19
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -37,6 +37,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	disable-bt.dtbo \
 	disable-wifi.dtbo \
 	dpi18.dtbo \
+	dpi18cpadhi.dtbo \
 	dpi24.dtbo \
 	draws.dtbo \
 	dwc-otg.dtbo \
@@ -215,6 +216,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	upstream.dtbo \
 	upstream-pi4.dtbo \
 	vc4-fkms-v3d.dtbo \
+	vc4-kms-dpi-at056tn53v1.dtbo \
 	vc4-kms-dsi-7inch.dtbo \
 	vc4-kms-dsi-lt070me05000.dtbo \
 	vc4-kms-dsi-lt070me05000-v2.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -695,6 +695,14 @@ Load:   dtoverlay=dpi18
 Params: <None>
 
 
+Name:   dpi18cpadhi
+Info:   Overlay for a generic 18-bit DPI display (in 'mode 6' connection scheme)
+        This uses GPIOs 0-9,12-17,20-25 (so no I2C, uart etc.), and activates
+        the output 3-3 seconds after the kernel has started.
+Load:   dtoverlay=dpi18cpadhi
+Params: <None>
+
+
 Name:   dpi24
 Info:   Overlay for a generic 24-bit DPI display
         This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
@@ -3219,6 +3227,13 @@ Params: cma-512                 CMA is 5
         cma-default             Use upstream's default value
 
 
+Name:   vc4-kms-dpi-at056tn53v1
+Info:   Enable an Innolux 5.6in VGA TFT connected to DPI interface under KMS.
+        Requires vc4-kms-v3d to be loaded.
+Load:   dtoverlay=vc4-kms-dpi-at056tn53v1
+Params: <None>
+
+
 Name:   vc4-kms-dsi-7inch
 Info:   Enable the Raspberry Pi DSI 7" screen.
         Use edt-ft5406 for the touchscreen element.
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/dpi18cpadhi-overlay.dts
@@ -0,0 +1,26 @@
+/*
+ * dpi18cpadhi-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&fb>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
+		};
+	};
+
+	fragment@1 {
+		target = <&vc4>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
+		};
+	};
+};
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/vc4-kms-dpi-at056tn53v1-overlay.dts
@@ -0,0 +1,44 @@
+/*
+ * vc4-kms-dpi-at056tn53v1-overlay.dts
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/bcm2835.h>
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			panel: panel {
+				compatible = "innolux,at056tn53v1", "simple-panel";
+
+				port {
+					panel_in: endpoint {
+						remote-endpoint = <&dpi_out>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&dpi>;
+		__overlay__  {
+			status = "okay";
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&dpi_18bit_cpadhi_gpio0>;
+
+			port {
+				dpi_out: endpoint {
+					remote-endpoint = <&panel_in>;
+				};
+			};
+		};
+	};
+};