arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay

The OLDI-LCD1EVM add on board has Rocktech RK101II01D-CT panel[1] with
integrated touch screen. The integrated touch screen is Goodix GT928.
This panel connects with AM65 GP-EVM[2].

Add DT nodes for these and connect the endpoint nodes with DSS.

[1]: Panel link
https://www.digimax.it/en/tft-lcd/20881-RK101II01D-CT

[2]: AM654 LCD EVM:
https://www.ti.com/tool/TMDSLCD1EVM

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
[abhatia1@ti.com: Make cosmetic and 6.4 kernel DTSO syntax changes]
Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20230509102354.10116-2-a-bhatia1@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index c83c9d7..47b0d25 100644 (file)
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -22,12 +22,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
 
 # Boards with AM65x SoC
+k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb k3-am654-base-board-rocktech-rk101-panel.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic-pg2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-m2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-pg2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am654-gp-evm.dtb
 
 # Boards with J7200 SoC
 k3-j7200-evm-dtbs := k3-j7200-common-proc-board.dtb k3-j7200-evm-quad-port-eth-exp.dtbo

diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso b/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
new file mode 100644 (file)
index 0000000..3be92c3
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * OLDI-LCD1EVM Rocktech integrated panel and touch DT overlay for AM654-EVM.
+ * Panel Link: https://www.digimax.it/en/tft-lcd/20881-RK101II01D-CT
+ * AM654 LCD EVM: https://www.ti.com/tool/TMDSLCD1EVM
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&{/} {
+       display0 {
+               compatible = "rocktech,rk101ii01d-ct";
+               backlight = <&lcd_bl>;
+               enable-gpios = <&pca9555 8 GPIO_ACTIVE_HIGH>;
+               port {
+                       lcd_in0: endpoint {
+                               remote-endpoint = <&oldi_out0>;
+                       };
+               };
+       };
+
+       lcd_bl: backlight {
+               compatible = "pwm-backlight";
+               pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
+               brightness-levels =
+                       <0 32 64 96 128 160 192 224 255>;
+               default-brightness-level = <8>;
+       };
+};
+
+&dss {
+       status = "okay";
+};
+
+&dss_ports {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       port@0 {
+               reg = <0>;
+
+               oldi_out0: endpoint {
+                       remote-endpoint = <&lcd_in0>;
+               };
+       };
+};
+
+&main_i2c1 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       touchscreen@14 {
+               compatible = "goodix,gt928";
+               reg = <0x14>;
+
+               interrupt-parent = <&pca9554>;
+               interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+               touchscreen-size-x = <1280>;
+               touchscreen-size-y = <800>;
+
+               reset-gpios = <&pca9555 9 GPIO_ACTIVE_HIGH>;
+               irq-gpios = <&pca9554 3 GPIO_ACTIVE_HIGH>;
+       };
+};