From fe886aec2ef0b05a2e31b3f184fbe85b6aa9743c Mon Sep 17 00:00:00 2001 From: Hugo Villeneuve Date: Thu, 5 Mar 2026 13:06:30 -0500 Subject: [PATCH] ARM: dts: imx6ul-var-som: add support for LVDS display panel Add support for the LD configuration option (LVDS encoder assembled on SOM) so that the LVDS display panel on the concerto EVK board works properly. Not all VAR-SOM-6UL SOMs have the LD configuration option so factor out this functionality to a separate dtsi. Signed-off-by: Hugo Villeneuve Signed-off-by: Frank Li --- .../imx/imx6ul-var-som-concerto-common.dtsi | 35 ++++-- .../nxp/imx/imx6ul-var-som-concerto-full.dts | 1 + .../dts/nxp/imx/imx6ul-var-som-concerto.dts | 1 + .../nxp/imx/imx6ul-var-som-lvds-panel.dtsi | 112 ++++++++++++++++++ .../nxp/imx/imx6ull-var-som-concerto-full.dts | 1 + .../dts/nxp/imx/imx6ull-var-som-concerto.dts | 1 + 6 files changed, 139 insertions(+), 12 deletions(-) create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ul-var-som-lvds-panel.dtsi diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi index f099ca5d0e8f..e5637310ba63 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-common.dtsi @@ -44,6 +44,29 @@ led-0 { linux,default-trigger = "heartbeat"; }; }; + + lvds_panel: lvds-panel { + compatible = "sgd,gktw70sdae4se", "panel-lvds"; + data-mapping = "jeida-18"; + width-mm = <153>; + height-mm = <86>; + + panel-timing { + clock-frequency = <35000000>; + hactive = <800>; + vactive = <480>; + hback-porch = <40>; + hfront-porch = <40>; + vback-porch = <29>; + vfront-porch = <13>; + hsync-len = <48>; + vsync-len = <3>; + hsync-active = <0>; + vsync-active = <0>; + de-active = <1>; + pixelclk-active = <0>; + }; + }; }; &can1 { @@ -98,12 +121,6 @@ MX6UL_PAD_UART3_RX_DATA__GPIO1_IO25 0x1b0b0 /* GPLED2 */ >; }; - pinctrl_pwm4: pwm4grp { - fsl,pins = < - MX6UL_PAD_GPIO1_IO05__PWM4_OUT 0x110b0 - >; - }; - pinctrl_rtc: rtcgrp { fsl,pins = < MX6UL_PAD_JTAG_MOD__GPIO1_IO10 0x1b0b0 /* RTC alarm IRQ */ @@ -139,12 +156,6 @@ MX6UL_PAD_GPIO1_IO01__WDOG1_WDOG_B 0x78b0 }; }; -&pwm4 { - pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_pwm4>; - status = "okay"; -}; - &snvs_pwrkey { status = "disabled"; }; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts index 64a3cbd8b7c3..725f34d6b7ee 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts @@ -14,6 +14,7 @@ #include "imx6ul-var-som-enet2.dtsi" #include "imx6ul-var-som-enet1.dtsi" #include "imx6ul-var-som-audio.dtsi" +#include "imx6ul-var-som-lvds-panel.dtsi" / { model = "Variscite VAR-SOM-6UL Concerto Board (6UL CPU)"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts index 9c5cb96beeb1..c249e15772b8 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto.dts @@ -14,6 +14,7 @@ #include "imx6ul-var-som-sd.dtsi" #include "imx6ul-var-som-enet2.dtsi" #include "imx6ul-var-som-audio.dtsi" +#include "imx6ul-var-som-lvds-panel.dtsi" / { model = "Variscite VAR-SOM-6UL Concerto Board (6UL CPU)"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-lvds-panel.dtsi b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-lvds-panel.dtsi new file mode 100644 index 000000000000..996b37d35d6e --- /dev/null +++ b/arch/arm/boot/dts/nxp/imx/imx6ul-var-som-lvds-panel.dtsi @@ -0,0 +1,112 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * LVDS panel support for Variscite VAR-SOM-6UL module. + * + * Copyright 2019-2024 Variscite Ltd. + * Copyright 2026 Dimonoff + */ + +/ { + lcd_backlight: lcd-backlight { + compatible = "pwm-backlight"; + pwms = <&pwm4 0 2000000 0>; + pwm-names = "LCD_BKLT_PWM"; + brightness-levels = <0 4 8 16 32 64 128 255>; + default-brightness-level = <6>; + status = "okay"; + }; + + lvds_encoder: lvds-encoder { + compatible = "ti,sn75lvds93", "lvds-encoder"; + power-supply = <®_3p3v>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + lvds_enc_in: endpoint { + remote-endpoint = <&lcdif_out>; + }; + }; + + port@1 { + reg = <1>; + + lvds_enc_out: endpoint { + remote-endpoint = <&lvds_panel_in>; + }; + }; + }; + }; +}; + +&iomuxc { + pinctrl_lcdif_ctrl: lcdif-ctrl-grp { + fsl,pins = < + MX6UL_PAD_LCD_CLK__LCDIF_CLK 0x79 + MX6UL_PAD_LCD_ENABLE__LCDIF_ENABLE 0x79 + >; + }; + + pinctrl_lcdif_dat: lcdif-dat-grp { + fsl,pins = < + MX6UL_PAD_LCD_DATA02__LCDIF_DATA02 0x79 + MX6UL_PAD_LCD_DATA03__LCDIF_DATA03 0x79 + MX6UL_PAD_LCD_DATA04__LCDIF_DATA04 0x79 + MX6UL_PAD_LCD_DATA05__LCDIF_DATA05 0x79 + MX6UL_PAD_LCD_DATA06__LCDIF_DATA06 0x79 + MX6UL_PAD_LCD_DATA07__LCDIF_DATA07 0x79 + MX6UL_PAD_LCD_DATA10__LCDIF_DATA10 0x79 + MX6UL_PAD_LCD_DATA11__LCDIF_DATA11 0x79 + MX6UL_PAD_LCD_DATA12__LCDIF_DATA12 0x79 + MX6UL_PAD_LCD_DATA13__LCDIF_DATA13 0x79 + MX6UL_PAD_LCD_DATA14__LCDIF_DATA14 0x79 + MX6UL_PAD_LCD_DATA15__LCDIF_DATA15 0x79 + MX6UL_PAD_LCD_DATA18__LCDIF_DATA18 0x79 + MX6UL_PAD_LCD_DATA19__LCDIF_DATA19 0x79 + MX6UL_PAD_LCD_DATA20__LCDIF_DATA20 0x79 + MX6UL_PAD_LCD_DATA21__LCDIF_DATA21 0x79 + MX6UL_PAD_LCD_DATA22__LCDIF_DATA22 0x79 + MX6UL_PAD_LCD_DATA23__LCDIF_DATA23 0x79 + >; + }; + + pinctrl_pwm4: pwm4-grp { + fsl,pins = < + MX6UL_PAD_GPIO1_IO05__PWM4_OUT 0x110b0 /* LCD BACKLIGHT */ + >; + }; +}; + +&lcdif { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcdif_dat + &pinctrl_lcdif_ctrl>; + status = "okay"; + + port { + lcdif_out: endpoint { + remote-endpoint = <&lvds_enc_in>; + }; + }; +}; + +&lvds_panel { + status = "okay"; + + port { + lvds_panel_in: endpoint { + remote-endpoint = <&lvds_enc_out>; + }; + }; +}; + +/* PWM LCD */ +&pwm4 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwm4>; + status = "okay"; +}; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts index 2e1f75d5f25a..1b7c1a3383ee 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts @@ -14,6 +14,7 @@ #include "imx6ul-var-som-enet2.dtsi" #include "imx6ul-var-som-enet1.dtsi" #include "imx6ul-var-som-audio.dtsi" +#include "imx6ul-var-som-lvds-panel.dtsi" / { model = "Variscite VAR-SOM-6UL Concerto Board (6ULL CPU)"; diff --git a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto.dts b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto.dts index 43a477db652f..9c9d16eb1a11 100644 --- a/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto.dts +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto.dts @@ -13,6 +13,7 @@ #include "imx6ul-var-som-sd.dtsi" #include "imx6ul-var-som-enet2.dtsi" #include "imx6ul-var-som-audio.dtsi" +#include "imx6ul-var-som-lvds-panel.dtsi" / { model = "Variscite VAR-SOM-6UL Concerto Board (6ULL CPU)";