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Wed, 09 Sep 2026 11:14:35 -0700 (PDT) From: Leonardo Costa To: u-kumar1@ti.com, nm@ti.com, vigneshr@ti.com, kristo@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: leonardo.costa@toradex.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] arm64: dts: ti: k3-am69-aquila: Add Toradex DSI to LVDS adapter with the 10.1" V2 display Date: Wed, 9 Sep 2026 15:12:09 -0300 Message-ID: <20260909181332.1081552-1-leoreis.costa@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Leonardo Costa Add a device tree overlay for the Toradex DSI to LVDS Adapter with the Toradex Capacitive Touch Display 10.1" LVDS V2. The adapter connects to the Aquila DSI_1 interface. It is based on the Texas Instruments SN65DSI84 DSI-to-LVDS bridge and drives an Opto Logic SCX1001511GGC49 10.1" WXGA TFT LCD LVDS panel. Touch input is provided by an ILITEK ILI251x capacitive touch controller. Link: https://developer.toradex.com/hardware/accessories/add-ons/dsi-lvds-adapter Link: https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds Signed-off-by: Leonardo Costa --- Changes in v2: - Add comment explaining the panel timings difference between this overlay and the ones for the native LVDS interface (without the DSI to LVDS bridge). - Add information in the hardware pin comments about which signals in the DSI to LVDS bridge each pin connects to. - Add comment explaining why the rising edge is used on the TOUCH_INT# signal. - Link to v1: https://lore.kernel.org/all/20260803173705.2268792-1-leoreis.costa@gmail.com/T/# --- arch/arm64/boot/dts/ti/Makefile | 5 + ...dsi-to-lvds-v2-panel-cap-touch-10inch.dtso | 161 ++++++++++++++++++ 2 files changed, 166 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 795978e962ee..536a34e132ed 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -225,6 +225,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dev.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dev-dsi-to-hdmi.dtb dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dsi-to-hdmi.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-panel-cap-touch-10inch-dsi.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am69-aquila-panel-cap-touch-7inch-dsi.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb @@ -389,6 +390,9 @@ k3-am69-aquila-dev-csi-ov5640-dtbs := \ k3-am69-aquila-dev-dsi-to-lvds-panel-cap-touch-10inch-dtbs := \ k3-am69-aquila-dev.dtb \ k3-am69-aquila-dsi-to-lvds-panel-cap-touch-10inch.dtbo +k3-am69-aquila-dev-dsi-to-lvds-v2-panel-cap-touch-10inch-dtbs := \ + k3-am69-aquila-dev.dtb \ + k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtbo k3-am69-sk-csi2-dual-imx219-dtbs := k3-am69-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo k3-am69-sk-pcie0-ep-dtbs := k3-am69-sk.dtb \ @@ -491,6 +495,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am69-aquila-dev-csi-ov5640-24mhz.dtb \ k3-am69-aquila-dev-csi-ov5640.dtb \ k3-am69-aquila-dev-dsi-to-lvds-panel-cap-touch-10inch.dtb \ + k3-am69-aquila-dev-dsi-to-lvds-v2-panel-cap-touch-10inch.dtb \ k3-am69-sk-csi2-dual-imx219.dtb \ k3-am69-sk-pcie0-ep.dtb \ k3-j7200-evm-pcie1-ep.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtso b/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtso new file mode 100644 index 000000000000..92e270611f05 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am69-aquila-dsi-to-lvds-v2-panel-cap-touch-10inch.dtso @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright (c) Toradex + * + * Toradex DSI to LVDS Adapter on Aquila DSI_1 with Capacitive Touch Display + * 10.1" V2 Used on Development Board (J44). DSI_1 is exposed via a Samtec + * LSS-130 connector. + * + * https://developer.toradex.com/hardware/accessories/displays/capacitive-touch-display-101inch-lvds + * https://www.toradex.com/accessories/capacitive-touch-display-10.1-inch-lvds + * https://developer.toradex.com/hardware/accessories/add-ons/dsi-lvds-adapter + * https://www.toradex.com/accessories/verdin-dsi-to-lvds-adapter + */ + +/dts-v1/; +/plugin/; + +#include +#include + +&{/} { + backlight_pwm3: backlight-pwm3 { + compatible = "pwm-backlight"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_19_dsi_1>; + brightness-levels = <0 45 63 88 119 158 203 255>; + default-brightness-level = <4>; + /* Aquila GPIO_19_DSI_1 (AQUILA B44) - DSI_1_BKL_EN_LVDS */ + enable-gpios = <&main_gpio0 13 GPIO_ACTIVE_HIGH>; + /* Aquila PWM_3_DSI (AQUILA B46) - PWM_3_DSI_LVDS */ + pwms = <&main_ehrpwm5 0 6666667 0>; + }; + + panel-lvds-bridge { + compatible = "optologic,scx1001511ggc49", "panel-lvds"; + backlight = <&backlight_pwm3>; + data-mapping = "vesa-24"; + height-mm = <136>; + width-mm = <217>; + + /* + * The timings here are different from the nominal ones for the + * SCX1001511GGC49 display. The clock-frequency, along with the + * other timings, are adjusted from experimentation to work + * consistently with the DSI to LVDS bridge (TI SN65DSI84) + * across Toradex modules that use it. + */ + panel-timing { + clock-frequency = <70000000>; + hactive = <1280>; + hback-porch = <55>; + hfront-porch = <55>; + hsync-len = <45>; + vactive = <800>; + vback-porch = <5>; + vfront-porch = <5>; + vsync-len = <3>; + de-active = <1>; + hsync-active = <0>; + vsync-active = <0>; + pixelclk-active = <0>; + }; + + port { + panel_lvds_bridge_in: endpoint { + remote-endpoint = <&dsi_lvds_bridge_out>; + }; + }; + }; +}; + +&dphy_tx0 { + status = "okay"; +}; + +&dsi0 { + status = "okay"; +}; + +&dsi0_ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + dsi0_out: endpoint { + remote-endpoint = <&dsi_lvds_bridge_in>; + }; + }; + + port@1 { + reg = <1>; + + dsi0_in: endpoint { + remote-endpoint = <&dpi2_out>; + }; + }; +}; + +&dss_ports { + #address-cells = <1>; + #size-cells = <0>; + + port@2 { + reg = <2>; + + dpi2_out: endpoint { + remote-endpoint = <&dsi0_in>; + }; + }; +}; + +&i2c_dsi_0 { + #address-cells = <1>; + #size-cells = <0>; + + bridge@2c { + compatible = "ti,sn65dsi84"; + reg = <0x2c>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_20_dsi_1>; + /* Aquila GPIO_20_DSI_1 (AQUILA B45) - LVDS_EN */ + enable-gpios = <&main_gpio0 18 GPIO_ACTIVE_HIGH>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + dsi_lvds_bridge_in: endpoint { + remote-endpoint = <&dsi0_out>; + data-lanes = <1 2 3 4>; + }; + }; + + port@2 { + reg = <2>; + + dsi_lvds_bridge_out: endpoint { + remote-endpoint = <&panel_lvds_bridge_in>; + }; + }; + }; + }; + + touchscreen@41 { + compatible = "ilitek,ili251x"; + reg = <0x41>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_17_dsi_1>, <&pinctrl_gpio_18_dsi_1>; + /* Aquila GPIO_17_DSI_1 (AQUILA B42) - TOUCH_INT# */ + /* Rising edge avoids spurious interrupts from the noisy falling edge. */ + interrupt-parent = <&main_gpio0>; + interrupts = <12 IRQ_TYPE_EDGE_RISING>; + /* Aquila GPIO_18_DSI_1 (AQUILA B43) - TOUCH_RESET# */ + reset-gpios = <&main_gpio0 31 GPIO_ACTIVE_LOW>; + }; +};