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arm64: dts: imx8mp-hummingboard-iiot: add dt overlays for muxable ports
The SolidRun i.MX8MP HummingBoard IIoT has a variety of connectors, and configurable ports: - 2x RS232 - 2x RS485 - DSI Panel Connector - LVDS Panel Connector RS232 and RS485 each share a single UART from the SoC via a mux, which are configured from the base dts for RS232 by default. Provide addons for: 1. Reconfigure UART A from RS232 to RS485. 2. Reconfigure UART B from RS232 to RS485. 3. Configure DSI Connector for Winstar WJ70N3TYJHMNG0 Panel. 4. Configure LVDS Connector for Winstar WF70A8SYJHLNGA Panel. A variation of the base dtb is generated for each addon to ensure that make dtbs_check covers the resulting dtb, and applying overlay is tested during build. It is however expected that bootloader should apply any combination of addons based on runtime configuration. Signed-off-by: Josua Mayer <josua@solid-run.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Josua Mayer
Frank Li
parent
8da7bfdcda
commit
514a34d75b
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@ -241,6 +241,18 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-frdm.dtb
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DTC_FLAGS_imx8mp-hummingboard-iiot := -@
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot.dtb
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo
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imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0-dtbs += imx8mp-hummingboard-iiot.dtb imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtb
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA.dtbo
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imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA-dtbs += imx8mp-hummingboard-iiot.dtb imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA.dtbo
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA.dtb
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-rs485-a.dtbo
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imx8mp-hummingboard-iiot-rs485-a-dtbs += imx8mp-hummingboard-iiot.dtb imx8mp-hummingboard-iiot-rs485-a.dtbo
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-rs485-a.dtb
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-rs485-b.dtbo
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imx8mp-hummingboard-iiot-rs485-b-dtbs += imx8mp-hummingboard-iiot.dtb imx8mp-hummingboard-iiot-rs485-b.dtbo
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-iiot-rs485-b.dtb
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DTC_FLAGS_imx8mp-hummingboard-mate := -@
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dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-mate.dtb
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DTC_FLAGS_imx8mp-hummingboard-pro := -@
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@ -0,0 +1,67 @@
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright 2025 Josua Mayer <josua@solid-run.com>
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*
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* Overlay for enabling HummingBoard IIoT MIPI-DSI connector
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* with Winstar WJ70N3TYJHMNG0 panel.
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*/
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/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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&{/} {
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dsi_backlight: dsi-backlight {
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compatible = "gpio-backlight";
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gpios = <&tca6408_u48 3 GPIO_ACTIVE_LOW>;
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};
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};
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&i2c_dsi {
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#address-cells = <1>;
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#size-cells = <0>;
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touchscreen@41 {
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compatible = "ilitek,ili2130";
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reg = <0x41>;
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interrupts-extended = <&tca6416_u21 13 IRQ_TYPE_LEVEL_LOW>;
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reset-gpios = <&tca6408_u48 6 GPIO_ACTIVE_LOW>;
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};
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};
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&lcdif1 {
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status = "okay";
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};
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&mipi_dsi {
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#address-cells = <1>;
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#size-cells = <0>;
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samsung,esc-clock-frequency = <10000000>;
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status = "okay";
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panel@0 {
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/* This is a Winstar panel, but the ronbo panel uses same controls. */
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compatible = "ronbo,rb070d30";
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reg = <0>;
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/* reset is active-low but driver inverts it internally */
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reset-gpios = <&tca6408_u48 1 GPIO_ACTIVE_HIGH>;
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backlight = <&dsi_backlight>;
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power-gpios = <&tca6408_u48 2 GPIO_ACTIVE_HIGH>;
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shlr-gpios = <&tca6408_u48 4 GPIO_ACTIVE_LOW>;
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updn-gpios = <&tca6408_u48 5 GPIO_ACTIVE_HIGH>;
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vcc-lcd-supply = <®_dsi_panel>;
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port {
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panel_from_dsim: endpoint {
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remote-endpoint = <&mipi_dsi_out>;
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};
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};
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};
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};
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&mipi_dsi_out {
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data-lanes = <1 2 3 4>;
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remote-endpoint = <&panel_from_dsim>;
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};
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@ -0,0 +1,97 @@
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright 2025 Josua Mayer <josua@solid-run.com>
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*
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* Overlay for enabling HummingBoard IIoT LVDS connector
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* with Winstar WF70A8SYJHLNGA panel.
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*/
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/dts-v1/;
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/plugin/;
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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&{/} {
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lvds_backlight: lvds-backlight {
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compatible = "gpio-backlight";
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gpios = <&tca6408_u37 3 GPIO_ACTIVE_LOW>;
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};
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panel-lvds {
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compatible = "winstar,wf70a8syjhlnga", "panel-lvds";
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backlight = <&lvds_backlight>;
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data-mapping = "vesa-24";
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enable-gpios = <&tca6408_u37 2 GPIO_ACTIVE_HIGH>;
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height-mm = <86>;
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power-supply = <®_dsi_panel>;
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reset-gpios = <&tca6408_u37 1 GPIO_ACTIVE_HIGH>;
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width-mm = <154>;
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panel-timing {
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/*
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* Note: NXP BSP hard-codes 74MHz clock in ldb driver:
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* drivers/gpu/drm/imx/imx8mp-ldb.c
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* SolidRun BSP carries patch.
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*/
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clock-frequency = <49500000>;
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de-active = <1>;
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hactive = <1024>;
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hback-porch = <144>;
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hfront-porch = <40>;
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hsync-active = <0>;
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hsync-len = <104>;
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vactive = <600>;
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vback-porch = <11>;
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vfront-porch = <3>;
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vsync-active = <1>;
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vsync-len = <10>;
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};
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port {
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panel_from_lvds: endpoint {
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remote-endpoint = <&ldb_lvds_ch0>;
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};
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};
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};
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};
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&i2c_lvds {
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#address-cells = <1>;
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#size-cells = <0>;
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touchscreen@41 {
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compatible = "ilitek,ili2130";
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reg = <0x41>;
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interrupts-extended = <&tca6416_u21 13 IRQ_TYPE_LEVEL_LOW>;
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reset-gpios = <&tca6408_u37 6 GPIO_ACTIVE_LOW>;
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};
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};
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&lcdif2 {
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status = "okay";
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};
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&ldb_lvds_ch0 {
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remote-endpoint = <&panel_from_lvds>;
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};
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&lvds_bridge {
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status = "okay";
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};
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&tca6408_u37 {
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lvds-lr-hog {
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gpios = <4 GPIO_ACTIVE_HIGH>;
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gpio-hog;
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line-name = "lvds-l/r";
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output-high;
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};
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lvds-ud-hog {
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gpios = <5 GPIO_ACTIVE_HIGH>;
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gpio-hog;
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line-name = "lvds-u/d";
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output-high;
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};
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};
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@ -0,0 +1,18 @@
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright 2025 Josua Mayer <josua@solid-run.com>
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*
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* Overlay for enabling HummingBoard IIoT on-board RS485 Port A on connector J5004.
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*/
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/dts-v1/;
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/plugin/;
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&uart3 {
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linux,rs485-enabled-at-boot-time;
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};
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&uart3_rs_232_485_mux {
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/* select rs485 */
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idle-state = <1>;
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};
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@ -0,0 +1,18 @@
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright 2025 Josua Mayer <josua@solid-run.com>
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*
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* Overlay for enabling HummingBoard IIoT on-board RS485 Port B on connector J5004.
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*/
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/dts-v1/;
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/plugin/;
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&uart4 {
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linux,rs485-enabled-at-boot-time;
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};
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&uart4_rs_232_485_mux {
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/* select rs485 */
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idle-state = <1>;
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};
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