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Message-Id: <20220427185243.173594-4-detlev.casanova@collabora.com>
Date: Wed, 27 Apr 2022 14:52:43 -0400
From: Detlev Casanova <detlev.casanova@...labora.com>
To: linux-kernel@...r.kernel.org
Cc: arnd@...db.de, bcm-kernel-feedback-list@...adcom.com,
devicetree@...r.kernel.org, f.fainelli@...il.com,
frowand.list@...il.com, linux-arm-kernel@...ts.infradead.org,
linux-rpi-kernel@...ts.infradead.org, masahiroy@...nel.org,
michal.lkml@...kovi.net, ndesaulniers@...gle.com,
nsaenz@...nel.org, olof@...om.net, rjui@...adcom.com,
robh+dt@...nel.org, sbranden@...adcom.com, soc@...nel.org,
stefan.wahren@...e.com,
Detlev Casanova <detlev.casanova@...labora.com>
Subject: [RFC PATCH v2 3/3] ARM: dto: Add bcm2711-rpi-7-inches-ts.dts overlay
Add a device tree overlay to support the official Raspberrypi 7" touchscreen for
the bcm2711 devices.
The panel is connected on the DSI 1 port and uses the simple-panel
driver.
The device tree also makes sure to activate the pixelvalve[0-4] CRTC modules
Signed-off-by: Detlev Casanova <detlev.casanova@...labora.com>
---
arch/arm/boot/dts/Makefile | 4 +
arch/arm/boot/dts/overlays/Makefile | 3 +
.../dts/overlays/bcm2711-rpi-7-inches-ts.dts | 125 ++++++++++++++++++
arch/arm64/boot/dts/broadcom/Makefile | 4 +
.../arm64/boot/dts/broadcom/overlays/Makefile | 3 +
.../overlays/bcm2711-rpi-7-inches-ts.dts | 2 +
6 files changed, 141 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/Makefile
create mode 100644 arch/arm/boot/dts/overlays/bcm2711-rpi-7-inches-ts.dts
create mode 100644 arch/arm64/boot/dts/broadcom/overlays/Makefile
create mode 100644 arch/arm64/boot/dts/broadcom/overlays/bcm2711-rpi-7-inches-ts.dts
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 235ad559acb2..eb0b0b121947 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1549,3 +1549,7 @@ dtb-$(CONFIG_ARCH_ASPEED) += \
aspeed-bmc-vegman-n110.dtb \
aspeed-bmc-vegman-rx20.dtb \
aspeed-bmc-vegman-sx20.dtb
+
+ifeq ($(CONFIG_OF_OVERLAY),y)
+subdir-y += overlays
+endif
diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
new file mode 100644
index 000000000000..c90883dfaf91
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-7-inches-ts.dtbo
diff --git a/arch/arm/boot/dts/overlays/bcm2711-rpi-7-inches-ts.dts b/arch/arm/boot/dts/overlays/bcm2711-rpi-7-inches-ts.dts
new file mode 100644
index 000000000000..de98a6c1079a
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/bcm2711-rpi-7-inches-ts.dts
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ panel_disp1: panel@0 {
+ reg = <0 0 0>;
+ compatible = "raspberrypi,7inch-dsi", "simple-panel";
+ backlight = <®_display>;
+ power-supply = <®_display>;
+ status = "okay";
+
+ port {
+ panel_in: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
+ };
+
+ reg_bridge: regulator@0 {
+ reg = <0 0 0>;
+ compatible = "regulator-fixed";
+ regulator-name = "bridge_reg";
+ gpio = <®_display 0 0>;
+ vin-supply = <®_display>;
+ enable-active-high;
+ status = "okay";
+ };
+};
+
+&i2c_csi_dsi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ft5406: touchscreen@38 {
+ compatible = "edt,edt-ft5506";
+ reg = <0x38>;
+ status = "okay";
+
+ vcc-supply = <®_display>;
+ reset-gpio = <®_display 1 1>;
+
+ touchscreen-size-x = < 800 >;
+ touchscreen-size-y = < 480 >;
+
+ touchscreen-inverted-x;
+ touchscreen-inverted-y;
+ };
+
+ reg_display: regulator@45 {
+ compatible = "raspberrypi,7inch-touchscreen-panel-regulator";
+ reg = <0x45>;
+ status = "okay";
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+};
+
+&dsi1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ status = "okay";
+
+ port {
+ dsi_out: endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+
+ bridge@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <0>;
+ compatible = "toshiba,tc358762";
+
+ vddc-supply = <®_bridge>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ bridge_in: endpoint {
+ remote-endpoint = <&dsi_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ bridge_out: endpoint {
+ remote-endpoint = <&panel_in>;
+ };
+ };
+ };
+ };
+};
+
+&pixelvalve0 {
+ status = "okay";
+};
+
+&pixelvalve1 {
+ status = "okay";
+};
+
+&pixelvalve2 {
+ status = "okay";
+};
+
+&pixelvalve3 {
+ status = "okay";
+};
+
+&pixelvalve4 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/broadcom/Makefile b/arch/arm64/boot/dts/broadcom/Makefile
index c6882032a428..a6c43c5b053a 100644
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -7,6 +7,10 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-400.dtb \
bcm2837-rpi-3-b-plus.dtb \
bcm2837-rpi-cm3-io3.dtb
+ifeq ($(CONFIG_OF_OVERLAY),y)
+subdir-y += overlays
+endif
+
subdir-y += bcm4908
subdir-y += northstar2
subdir-y += stingray
diff --git a/arch/arm64/boot/dts/broadcom/overlays/Makefile b/arch/arm64/boot/dts/broadcom/overlays/Makefile
new file mode 100644
index 000000000000..c90883dfaf91
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/overlays/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rpi-7-inches-ts.dtbo
diff --git a/arch/arm64/boot/dts/broadcom/overlays/bcm2711-rpi-7-inches-ts.dts b/arch/arm64/boot/dts/broadcom/overlays/bcm2711-rpi-7-inches-ts.dts
new file mode 100644
index 000000000000..7d532b090305
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/overlays/bcm2711-rpi-7-inches-ts.dts
@@ -0,0 +1,2 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "arm/overlays/bcm2711-rpi-7-inches-ts.dts"
--
2.36.0
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