@@ -1000,8 +1000,12 @@ dtb-$(CONFIG_SOC_DRA7XX) += \
am57xx-cl-som-am57x.dtb \
am57xx-sbc-am57x.dtb \
am572x-idk.dtb \
+ am572x-idk-touchscreen.dtbo \
am571x-idk.dtb \
+ am571x-idk-touchscreen.dtbo \
am574x-idk.dtb \
+ am57xx-idk-lcd-osd101t2045.dtbo \
+ am57xx-idk-lcd-osd101t2587.dtbo \
dra7-evm.dtb \
dra72-evm.dtb \
dra72-evm-revc.dtb \
new file mode 100644
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&i2c1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchscreen: edt-ft5506@38 {
+ compatible = "edt,edt-ft5506", "edt,edt-ft5x06";
+
+ reg = <0x38>;
+
+ interrupt-parent = <&gpio5>;
+ interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
+
+ /* GPIO line is inverted before going to touch panel */
+ reset-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
+
+ touchscreen-size-x = <1920>;
+ touchscreen-size-y = <1200>;
+
+ wakeup-source;
+ };
+};
new file mode 100644
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&i2c1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchscreen: edt-ft5506@38 {
+ compatible = "edt,edt-ft5506", "edt,edt-ft5x06";
+
+ reg = <0x38>;
+
+ interrupt-parent = <&gpio3>;
+ interrupts = <14 IRQ_TYPE_EDGE_FALLING>;
+
+ /* GPIO line is inverted before going to touch panel */
+ reset-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
+
+ touchscreen-size-x = <1920>;
+ touchscreen-size-y = <1200>;
+
+ wakeup-source;
+ };
+};
new file mode 100644
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ aliases {
+ display0 = "/display";
+ display1 = "/connector";
+ };
+
+ lcd_bl: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&ecap0 0 50000 1>;
+ brightness-levels = <0 51 53 56 62 75 101 152 255>;
+ default-brightness-level = <8>;
+ };
+};
+
+&dsi_bridge {
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lcd: display {
+ compatible = "osddisplays,osd101t2045-53ts";
+ reg = <0>;
+
+ label = "lcd";
+
+ backlight = <&lcd_bl>;
+
+ port {
+ lcd_in: endpoint {
+ remote-endpoint = <&dsi_out>;
+ };
+ };
+ };
+};
+
+&dsi_bridge_ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@1 {
+ reg = <1>;
+ dsi_out: endpoint {
+ remote-endpoint = <&lcd_in>;
+ };
+ };
+};
+
+&epwmss0 {
+ status = "okay";
+};
+
+&ecap0 {
+ status = "okay";
+};
new file mode 100644
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019-2022 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&{/} {
+ aliases {
+ display0 = "/display";
+ display1 = "/connector";
+ };
+
+ lcd_bl: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&ecap0 0 50000 1>;
+ brightness-levels = <0 51 53 56 62 75 101 152 255>;
+ default-brightness-level = <8>;
+ };
+};
+
+&dsi_bridge {
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ lcd: display {
+ compatible = "osddisplays,osd101t2587-53ts";
+ reg = <0>;
+
+ label = "lcd";
+
+ backlight = <&lcd_bl>;
+
+ port {
+ lcd_in: endpoint {
+ remote-endpoint = <&dsi_out>;
+ };
+ };
+ };
+};
+
+&dsi_bridge_ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@1 {
+ reg = <1>;
+ dsi_out: endpoint {
+ remote-endpoint = <&lcd_in>;
+ };
+ };
+};
+
+&epwmss0 {
+ status = "okay";
+};
+
+&ecap0 {
+ status = "okay";
+};
This is a more interesting use of DT Overlays than the previous patches. Here we have two touchscreen modules. Each is compatible with, and can be attached to, either of the two AM57xx IDK development board variants (AM571x or AM572x). Due to the way the extension header was wired on the development boards, the touch sensor on the touchscreen modules will connect to different SoC pins when connected. For this the touch sensor is modeled as an additional overlay that is specific to the development board for which it is connected. Basically the LCD overlay can be swapped, but the touchscreen overlay that attaches to the LCD must be used with the corresponding base DT and not to the LCD. AM571x -\ /- osd101t2045.dtbo -\ /- am571x-idk-touchscreen.dtbo X X AM572x -/ \- osd101t2587.dtbo -/ \- am572x-idk-touchscreen.dtbo Signed-off-by: Andrew Davis <afd@ti.com> --- arch/arm/boot/dts/Makefile | 4 ++ arch/arm/boot/dts/am571x-idk-touchscreen.dtso | 32 +++++++++ arch/arm/boot/dts/am572x-idk-touchscreen.dtso | 32 +++++++++ .../boot/dts/am57xx-idk-lcd-osd101t2045.dtso | 63 ++++++++++++++++++ .../boot/dts/am57xx-idk-lcd-osd101t2587.dtso | 66 +++++++++++++++++++ 5 files changed, 197 insertions(+) create mode 100644 arch/arm/boot/dts/am571x-idk-touchscreen.dtso create mode 100644 arch/arm/boot/dts/am572x-idk-touchscreen.dtso create mode 100644 arch/arm/boot/dts/am57xx-idk-lcd-osd101t2045.dtso create mode 100644 arch/arm/boot/dts/am57xx-idk-lcd-osd101t2587.dtso