arm64: dts: imx8mm: add imx8mm-venice-gw73xx-0x-rpidsi overlay for display

Add support for the following Raspberry Pi displays:
 - DFROBOT DRF0678 7in 800x480 TFT DSI capacitive touch
 - DFROBOT DRF0550 5in 800x480 TFT DSI capacitive touch

Both have the following hardware:
 - FocalTech FT5406 10pt touch controller (with no interrupt)
 - Powertip PH800480T013-IDF02 compatible panel
 - Toshiba TC358762 compatible DSI to DBI bridge
 - ATTINY based regulator used for backlight controller and panel enable

Support is added via a device-tree overlay. The touch controller is not
yet supported as polling mode is needed.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index f5397ce..1b5a64a 100644 (file)
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -147,6 +147,7 @@ imx8mm-venice-gw72xx-0x-rs232-rts-dtbs      := imx8mm-venice-gw72xx-0x.dtb imx8mm-ven
 imx8mm-venice-gw72xx-0x-rs422-dtbs     := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs422.dtbo
 imx8mm-venice-gw72xx-0x-rs485-dtbs     := imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rs485.dtbo
 imx8mm-venice-gw73xx-0x-imx219-dtbs    := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-imx219.dtbo
+imx8mm-venice-gw73xx-0x-rpidsi-dtbs    := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rpidsi.dtbo
 imx8mm-venice-gw73xx-0x-rs232-rts-dtbs := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs232-rts.dtbo
 imx8mm-venice-gw73xx-0x-rs422-dtbs     := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs422.dtbo
 imx8mm-venice-gw73xx-0x-rs485-dtbs     := imx8mm-venice-gw73xx-0x.dtb imx8mm-venice-gw73xx-0x-rs485.dtbo
@@ -156,6 +157,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw72xx-0x-rs485.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-imx219.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rpidsi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs232-rts.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs422.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw73xx-0x-rs485.dtb

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rpidsi.dtso b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rpidsi.dtso
new file mode 100644 (file)
index 0000000..e0768d4
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rpidsi.dtso
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2023 Gateworks Corporation
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+#include "imx8mm-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+       compatible = "gw,imx8mm-gw73xx-0x", "fsl,imx8mm";
+
+       panel {
+               compatible = "powertip,ph800480t013-idf02";
+               power-supply = <&attiny>;
+               backlight = <&attiny>;
+
+               port {
+                       panel_in: endpoint {
+                               remote-endpoint = <&bridge_out>;
+                       };
+               };
+       };
+};
+
+&i2c3 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       attiny: regulator@45 {
+               compatible = "raspberrypi,7inch-touchscreen-panel-regulator";
+               reg = <0x45>;
+       };
+};
+
+&lcdif {
+       status = "okay";
+};
+
+&mipi_dsi {
+       samsung,burst-clock-frequency = <891000000>;
+       samsung,esc-clock-frequency = <54000000>;
+       samsung,pll-clock-frequency = <27000000>;
+       #address-cells = <1>;
+       #size-cells = <0>;
+       status = "okay";
+
+       bridge@0 {
+               compatible = "toshiba,tc358762";
+               reg = <0>;
+               vddc-supply = <&attiny>;
+
+               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>;
+                               };
+                       };
+               };
+       };
+
+       ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               port@1 {
+                       reg = <1>;
+
+                       dsi_out: endpoint {
+                               remote-endpoint = <&bridge_in>;
+                       };
+               };
+       };
+};