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.
V3 -> V4:
- Added AM654 LCD EVM links for better information.
V1: https://lore.kernel.org/linux-devicetree/[email protected]/
V2: https://lore.kernel.org/linux-devicetree/[email protected]/
V3: i. https://lore.kernel.org/all/[email protected]/
ii. https://lore.kernel.org/all/[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 | 71 +++++++++++++++++++
arch/arm64/configs/defconfig | 2 +
3 files changed, 75 insertions(+)
create mode 100644 arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
--
2.40.1
TI's K3 SoCs uses the Enhanced high resolution PWM (EHRPWM) and the ECAP
modules for generating PWM signals, used in various application.
One such example is controlling the backlight power of the display
panels connected to the EVMs.
Enable these modules.
Signed-off-by: Aradhya Bhatia <[email protected]>
---
arch/arm64/configs/defconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index a24609e14d50..08679650644d 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1319,6 +1319,8 @@ CONFIG_PWM_SAMSUNG=y
CONFIG_PWM_SL28CPLD=m
CONFIG_PWM_SUN4I=m
CONFIG_PWM_TEGRA=m
+CONFIG_PWM_TIECAP=m
+CONFIG_PWM_TIEHRPWM=m
CONFIG_PWM_VISCONTI=m
CONFIG_SL28CPLD_INTC=y
CONFIG_QCOM_PDC=y
--
2.40.1
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.
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 <[email protected]>
Signed-off-by: Nikhil Devshatwar <[email protected]>
[[email protected]: Make cosmetic and 6.4 kernel 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 | 71 +++++++++++++++++++
2 files changed, 73 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..b507e2bd444e
--- /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>;
+ };
+};
--
2.40.1
Hi Aradhya Bhatia,
On Tue, 09 May 2023 15:53:52 +0530, Aradhya Bhatia wrote:
> 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.
>
> [...]
I have applied the following to branch ti-k3-dts-next on [1].
Thank you!
[1/2] arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay
commit: b8690ed3d1d16153be76f24de3a13797c9fd29b3
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh