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From 818fff9eed1c36f404f0556a0b239b43799a094b Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Tue, 10 Nov 2020 17:49:35 +0000
Subject: [PATCH] Add devicetree support for RaspberryPi 7" panel over
DSI I2C
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 8 +++
.../overlays/vc4-kms-dsi-7inch-overlay.dts | 56 +++++++++++++++++++
3 files changed, 65 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -201,6 +201,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
upstream.dtbo \
upstream-pi4.dtbo \
vc4-fkms-v3d.dtbo \
+ vc4-kms-dsi-7inch.dtbo \
vc4-kms-kippah-7inch.dtbo \
vc4-kms-v3d.dtbo \
vc4-kms-v3d-pi4.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -2935,6 +2935,14 @@ Params: cma-512 CMA is 5
cma-default Use upstream's default value
+Name: vc4-kms-dsi-7inch
+Info: Enable the Raspberry Pi DSI 7" screen.
+ Use edt-ft5406 for the touchscreen element.
+ Requires vc4-kms-v3d to be loaded.
+Load: dtoverlay=vc4-kms-dsi-7inch
+Params: <None>
+
+
Name: vc4-kms-kippah-7inch
Info: Enable the Adafruit DPI Kippah with the 7" Ontat panel attached.
Requires vc4-kms-v3d to be loaded.
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/vc4-kms-dsi-7inch-overlay.dts
@@ -0,0 +1,56 @@
+/*
+ * Device Tree overlay for RaspberryPi 7" Touchscreen panel
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&dsi1>;
+ __overlay__ {
+ #address-cells = <1>; size-cells = <0>;
+ status = "okay";
+ port {
+ dsi_out_port: endpoint {
+ remote-endpoint = <&panel_dsi_port>;
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&i2c_csi_dsi>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+ lcd@45 {
+ compatible = "raspberrypi,7inch-touchscreen-panel";
+ reg = <0x45>;
+ port {
+ panel_dsi_port: endpoint {
+ remote-endpoint = <&dsi_out_port>;
+ };
+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c0if>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@3 {
+ target = <&i2c0mux>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+};
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