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X-OriginatorOrg: solid-run.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jan 2026 12:52:01.6996 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 284f3580-ba4a-49d8-9ea5-08de56905fef X-MS-Exchange-CrossTenant-Id: a4a8aaf3-fd27-4e27-add2-604707ce5b82 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=a4a8aaf3-fd27-4e27-add2-604707ce5b82;Ip=[52.17.62.50];Helo=[eu-dlp.cloud-sec-av.com] X-MS-Exchange-CrossTenant-AuthSource: AM2PEPF0001C70E.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB7118 The SolidRun i.MX8MP HummingBoard IIoT has a variety of conectors, 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 --- arch/arm64/boot/dts/freescale/Makefile | 12 +++ ...hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso | 69 ++++++++++++++ ...ummingboard-iiot-panel-lvds-WF70A8SYJHLNGA.dtso | 105 +++++++++++++++++= ++++ .../imx8mp-hummingboard-iiot-rs485-a.dtso | 18 ++++ .../imx8mp-hummingboard-iiot-rs485-b.dtso | 18 ++++ 5 files changed, 222 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/f= reescale/Makefile index 80fb5bf084b3..0027b29b4c35 100644 --- a/arch/arm64/boot/dts/freescale/Makefile +++ b/arch/arm64/boot/dts/freescale/Makefile @@ -215,6 +215,18 @@ dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-edm-g-wb.dtb dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-evk.dtb dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot.dtb DTC_FLAGS_imx8mp-hummingboard-iiot :=3D -@ +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHM= NG0.dtbo +imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0-dtbs +=3D imx8mp-humming= board-iiot.dtb imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-panel-dsi-WJ70N3TYJHM= NG0.dtb +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJH= LNGA.dtbo +imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA-dtbs +=3D imx8mp-hummin= gboard-iiot.dtb imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJHLNGA.dtbo +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-panel-lvds-WF70A8SYJH= LNGA.dtb +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-rs485-a.dtbo +imx8mp-hummingboard-iiot-rs485-a-dtbs +=3D imx8mp-hummingboard-iiot.dtb im= x8mp-hummingboard-iiot-rs485-a.dtbo +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-rs485-a.dtb +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-rs485-b.dtbo +imx8mp-hummingboard-iiot-rs485-b-dtbs +=3D imx8mp-hummingboard-iiot.dtb im= x8mp-hummingboard-iiot-rs485-b.dtbo +dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-iiot-rs485-b.dtb dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-mate.dtb DTC_FLAGS_imx8mp-hummingboard-mate :=3D -@ dtb-$(CONFIG_ARCH_MXC) +=3D imx8mp-hummingboard-pro.dtb diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-panel-d= si-WJ70N3TYJHMNG0.dtso b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-= iiot-panel-dsi-WJ70N3TYJHMNG0.dtso new file mode 100644 index 000000000000..e66ee2ce69d8 --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-panel-dsi-WJ70= N3TYJHMNG0.dtso @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2025 Josua Mayer + * + * Overlay for enabling HummingBoard IIoT MIPI-DSI connector + * with Winstar WJ70N3TYJHMNG0 panel. + */ + +/dts-v1/; +/plugin/; + +#include +#include + +&{/} { + dsi_backlight: dsi-backlight { + compatible =3D "gpio-backlight"; + gpios =3D <&tca6408_u48 3 GPIO_ACTIVE_LOW>; + }; +}; + +&i2c_dsi { + #address-cells =3D <1>; + #size-cells =3D <0>; + + touchscreen@41 { + compatible =3D "ilitek,ili2130"; + reg =3D <0x41>; + reset-gpios =3D <&tca6408_u48 6 GPIO_ACTIVE_LOW>; + interrupts-extended =3D <&tca6416_u21 13 IRQ_TYPE_LEVEL_LOW>; + }; +}; + +&lcdif1 { + status =3D "okay"; +}; + +&mipi_dsi { + samsung,esc-clock-frequency =3D <10000000>; + #address-cells =3D <1>; + #size-cells =3D <0>; + status =3D "okay"; + + panel@0 { + /* This is a Winstar panel, but the ronbo panel uses same controls. */ + compatible =3D "ronbo,rb070d30"; + reg =3D <0>; + vcc-lcd-supply =3D <®_dsi_panel>; + power-gpios =3D <&tca6408_u48 2 GPIO_ACTIVE_HIGH>; + /* reset is active-low but driver inverts it internally */ + reset-gpios =3D <&tca6408_u48 1 GPIO_ACTIVE_HIGH>; + updn-gpios =3D <&tca6408_u48 5 GPIO_ACTIVE_HIGH>; + shlr-gpios =3D <&tca6408_u48 4 GPIO_ACTIVE_LOW>; + backlight =3D <&dsi_backlight>; + + port { + panel_from_dsim: endpoint { + remote-endpoint =3D <&dsim_to_panel>; + }; + }; + }; + + port@1 { + dsim_to_panel: endpoint { + remote-endpoint =3D <&panel_from_dsim>; + data-lanes =3D <1 2 3 4>; + }; + }; +}; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-panel-l= vds-WF70A8SYJHLNGA.dtso b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard= -iiot-panel-lvds-WF70A8SYJHLNGA.dtso new file mode 100644 index 000000000000..f8fb7fd0e4e4 --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-panel-lvds-WF7= 0A8SYJHLNGA.dtso @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2025 Josua Mayer + * + * Overlay for enabling HummingBoard IIoT LVDS connector + * with Winstar WF70A8SYJHLNGA panel. + */ + +/dts-v1/; +/plugin/; + +#include +#include + +&{/} { + lvds_backlight: lvds-backlight { + compatible =3D "gpio-backlight"; + gpios =3D <&tca6408_u37 3 GPIO_ACTIVE_LOW>; + }; + + panel-lvds { + compatible =3D "winstar,wf70a8syjhlnga", "panel-lvds"; + backlight =3D <&lvds_backlight>; + power-supply =3D <®_dsi_panel>; + enable-gpios =3D <&tca6408_u37 2 GPIO_ACTIVE_HIGH>; + reset-gpios =3D <&tca6408_u37 1 GPIO_ACTIVE_HIGH>; + data-mapping =3D "vesa-24"; + width-mm =3D <154>; + height-mm =3D <86>; + + panel-timing { + /* + * Note: NXP BSP hard-codes 74MHz clock in ldb driver: + * drivers/gpu/drm/imx/imx8mp-ldb.c + * SolidRun BSP carries patch. + */ + clock-frequency =3D <49500000>; + hactive =3D <1024>; + vactive =3D <600>; + hfront-porch =3D <40>; + hback-porch =3D <144>; + hsync-len =3D <104>; + hsync-active =3D <0>; + vfront-porch =3D <3>; + vback-porch =3D <11>; + vsync-len =3D <10>; + vsync-active =3D <1>; + de-active =3D <1>; + }; + + port { + panel_from_lvds: endpoint { + remote-endpoint =3D <&lvds_ch0_out>; + }; + }; + }; +}; + +&i2c_lvds { + #address-cells =3D <1>; + #size-cells =3D <0>; + + touchscreen@41 { + compatible =3D "ilitek,ili2130"; + reg =3D <0x41>; + reset-gpios =3D <&tca6408_u37 6 GPIO_ACTIVE_LOW>; + interrupts-extended =3D <&tca6416_u21 13 IRQ_TYPE_LEVEL_LOW>; + }; +}; + +&lcdif2 { + status =3D "okay"; +}; + +&lvds_bridge { + status =3D "okay"; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + status =3D "okay"; + + port@1 { + lvds_ch0_out: endpoint { + remote-endpoint =3D <&panel_from_lvds>; + }; + }; + }; +}; + +&tca6408_u37 { + lvds-lr-hog { + gpio-hog; + gpios =3D <4 GPIO_ACTIVE_HIGH>; + output-high; + line-name =3D "lvds-l/r"; + }; + + lvds-ud-hog { + gpio-hog; + gpios =3D <5 GPIO_ACTIVE_HIGH>; + output-high; + line-name =3D "lvds-u/d"; + }; +}; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-a= .dtso b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-a.dtso new file mode 100644 index 000000000000..7bbf800b78fb --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-a.dtso @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2025 Josua Mayer + * + * Overlay for enabling HummingBoard IIoT on-board RS485 Port A on connect= or J5004. + */ + +/dts-v1/; +/plugin/; + +&uart3_rs_232_485_mux { + /* select rs485 */ + idle-state =3D <1>; +}; + +&uart3 { + linux,rs485-enabled-at-boot-time; +}; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-b= .dtso b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-b.dtso new file mode 100644 index 000000000000..d4bfea886ad1 --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mp-hummingboard-iiot-rs485-b.dtso @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2025 Josua Mayer + * + * Overlay for enabling HummingBoard IIoT on-board RS485 Port B on connect= or J5004. + */ + +/dts-v1/; +/plugin/; + +&uart4_rs_232_485_mux { + /* select rs485 */ + idle-state =3D <1>; +}; + +&uart4 { + linux,rs485-enabled-at-boot-time; +}; --=20 2.43.0