2023-04-27 13:27:23

by Aradhya Bhatia

[permalink] [raw]
Subject: [PATCH v3 0/2] arm64: dts: ti: Enable OLDI display on AM654 EVM

Hello,

This patch series adds support for the Rocktech RK101II01D-CT OLDI
panel, on top of AM654 base-board EVM.

Moreover, it enables support for TI ECAP and TI EHRPWM drivers to
provide SW control of backlight.

While the AM654 GP EVM also consists of usb/pcie expansion board, I have
only added support for base-board + OLDI panel as I do not have the
required hardware.

The first patch of this series, was picked up from TI's public tree[1]
based on 5.10 LTS kernel.

[1]:
https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dts?h=ti-linux-5.10.y

Change Log:

V1 -> V2:
- Renamed the panel overlay file.
- Added am654-gp-evm build option in DT Makefile.
- Changes suggested by Tomi Valkeinen and Nishanth Menon.

V2 -> V3:
- Added the product link in the overlay file.

V1: https://lore.kernel.org/linux-devicetree/[email protected]/
V2: https://lore.kernel.org/linux-devicetree/[email protected]/

Aradhya Bhatia (1):
arm64: defconfig: Enable PWM drivers for TI ECAP and EHRPWM

Jyri Sarha (1):
arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay

arch/arm64/boot/dts/ti/Makefile | 2 +
...am654-base-board-rocktech-rk101-panel.dtso | 70 +++++++++++++++++++
arch/arm64/configs/defconfig | 2 +
3 files changed, 74 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso

--
2.39.1


2023-04-27 13:27:23

by Aradhya Bhatia

[permalink] [raw]
Subject: [PATCH v3 1/2] arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay

From: Jyri Sarha <[email protected]>

The OLDI-LCD1EVM add on board has Rocktech RK101II01D-CT panel[1] with
integrated touch screen. The integrated touch screen is Goodix GT928.
Add DT nodes for these and connect the endpoint nodes with DSS.

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

Signed-off-by: Jyri Sarha <[email protected]>
Signed-off-by: Nikhil Devshatwar <[email protected]>
[[email protected]: Make cosmetic and 6.1 DTSO syntax changes]
Signed-off-by: Aradhya Bhatia <[email protected]>
Reviewed-by: Tomi Valkeinen <[email protected]>
Reviewed-by: Andrew Davis <[email protected]>
---
arch/arm64/boot/dts/ti/Makefile | 2 +
...am654-base-board-rocktech-rk101-panel.dtso | 70 +++++++++++++++++++
2 files changed, 72 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index c83c9d772b81..47b0d257b508 100644
--- 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
index 000000000000..0342225d6be3
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
@@ -0,0 +1,70 @@
+// 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
+ *
+ * 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>;
+ };
+};
--
2.39.1