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boards: shields: Add Arduino Giga display shield.
Add board support for the Arduino Giga display shield. Signed-off-by: Ibrahim Abdalkader <[email protected]>
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‎boards/shields/giga_display_shield/Kconfig.defconfig

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# Copyright (c) 2025 Arduino SA
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# SPDX-License-Identifier: Apache-2.0
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if SHIELD_ARDUINO_GIGA_DISPLAY_SHIELD
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# Double frame buffer maintained by lvgl.
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if LVGL
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config STM32_LTDC_FB_NUM
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default 0
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config INPUT
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default y
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config LV_Z_DOUBLE_VDB
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default y
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config LV_Z_FULL_REFRESH
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default y
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config LV_Z_BITS_PER_PIXEL
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default 16
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config LV_DPI_DEF
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default 128
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config LV_Z_FLUSH_THREAD
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default y
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choice LV_COLOR_DEPTH
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default LV_COLOR_DEPTH_16
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endchoice
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endif # LVGL
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endif # SHIELD_ARDUINO_GIGA_DISPLAY_SHIELD

‎boards/shields/giga_display_shield/Kconfig.shield

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# Copyright (c) 2025 Arduino SA
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# SPDX-License-Identifier: Apache-2.0
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config SHIELD_ARDUINO_GIGA_DISPLAY_SHIELD
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def_bool $(shields_list_contains,arduino_giga_display_shield)

‎boards/shields/giga_display_shield/boards/arduino_giga_r1_m7.conf

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# Copyright (c) 2025 Arduino SA
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# SPDX-License-Identifier: Apache-2.0
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CONFIG_MEMC=y
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CONFIG_STM32_LTDC_RGB565=y
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CONFIG_HEAP_MEM_POOL_SIZE=65536
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CONFIG_DISPLAY_ST7701_INIT_PRIORITY=87
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CONFIG_STM32_LTDC_DISABLE_FMC_BANK1=y
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CONFIG_INPUT_GT911_INTERRUPT=y

‎boards/shields/giga_display_shield/boards/arduino_giga_r1_m7.overlay

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/*
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* Copyright (c) 2025 Arduino SA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/dt-bindings/display/panel.h>
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/ {
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lvgl_pointer {
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compatible = "zephyr,lvgl-pointer-input";
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input = <&gt911>;
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};
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aliases {
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accel0 = &gt911;
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};
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chosen {
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zephyr,display = &zephyr_lcd_controller;
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zephyr,touch = &gt911;
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};
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};
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&sdram1 {
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/* Frame buffer memory cache will cause screen flickering. */
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zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE) )>;
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};
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&zephyr_lcd_controller {
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status = "okay";
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ext-sdram = <&sdram1>;
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width = <480>;
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height = <800>;
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def-back-color-red = <0>;
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def-back-color-green = <0>;
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def-back-color-blue = <0>;
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pixel-format = <PANEL_PIXEL_FORMAT_RGB_565>;
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disp-on-gpios = <&gpioc 6 GPIO_ACTIVE_HIGH>;
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bl-ctrl-gpios = <&gpiob 12 GPIO_ACTIVE_HIGH>;
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/* sitronix, st7701 */
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display-timings {
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compatible = "zephyr,panel-timing";
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hsync-active = <1>;
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vsync-active = <0>;
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de-active = <0>;
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pixelclk-active = <0>;
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hback-porch = <40>;
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hsync-len = <32>;
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hfront-porch = <8>;
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vback-porch = <6>;
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vsync-len = <8>;
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vfront-porch = <9>;
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};
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};
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/* ltdc uses pll3_r as pixel clock */
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&pll3 {
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status = "okay";
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clocks = <&clk_hse>;
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div-m = <16>;
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mul-n = <110>;
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div-p = <2>;
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div-q = <2>;
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div-r = <4>; /* 27.5 MHz */
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};
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&zephyr_mipi_dsi {
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status = "okay";
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pll-ndiv = <125>;
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pll-idf = <4>;
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pll-odf = <0>;
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de-active-high;
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largest-packet-size = <0>;
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phy-timings = <35 35 35 35 0 10>;
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};
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&i2c4 {
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pinctrl-0 = <&i2c4_scl_pb6 &i2c4_sda_ph12>;
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pinctrl-names = "default";
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clock-frequency = <I2C_BITRATE_FAST>;
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status = "okay";
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gt911: gt911@5d {
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compatible = "goodix,gt911";
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reg = <0x5d>;
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alt-addr = <0x14>;
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reset-gpios = <&gpioi 2 GPIO_ACTIVE_LOW>;
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irq-gpios = <&gpioi 1 GPIO_ACTIVE_HIGH>;
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};
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};

‎boards/shields/giga_display_shield/giga_display_shield.overlay

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/*
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* Copyright (c) 2025 Arduino SA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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&zephyr_mipi_dsi {
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st7701: st7701@0 {
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status = "okay";
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compatible = "sitronix,st7701";
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reg = <0x0>;
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height = <800>;
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width = <480>;
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data-lanes = <2>;
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pixel-format = <MIPI_DSI_PIXFMT_RGB565>;
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rotation = <0>;
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gip-e0 = [E0 00 00 02];
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gip-e1 = [E1 08 00 0A 00 07 00 09 00 00 33 33];
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gip-e2 = [E2 00 00 00 00 00 00 00 00 00 00 00 00 00];
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gip-e3 = [E3 00 00 33 33];
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gip-e4 = [E4 44 44];
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gip-e5 = [E5 0E 60 A0 A0 10 60 A0 A0 0A 60 A0 A0 0C 60 A0 A0];
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gip-e6 = [E6 00 00 33 33];
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gip-e7 = [E7 44 44];
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gip-e8 = [E8 0D 60 A0 A0 0F 60 A0 A0 09 60 A0 A0 0B 60 A0 A0];
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gip-eb = [EB 02 01 E4 E4 44 00 40];
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gip-ec = [EC 02 01];
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gip-ed = [ED AB 89 76 54 01 FF FF FF FF FF FF 10 45 67 98 BA];
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gip-ed = [ED AB 89 76 54 01 FF FF FF FF FF FF 10 45 67 98 BA];
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pvgamctrl = [B0 40 C9 91 0D 12 07 02 09 09 1F 04 50 0F E4 29 DF];
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nvgamctrl = [B1 40 CB D0 11 92 07 00 08 07 1C 06 53 12 63 EB DF];
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display-timings {
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compatible = "zephyr,panel-timing";
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hsync-active = <1>;
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vsync-active = <0>;
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de-active = <0>;
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pixelclk-active = <0>;
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hback-porch = <40>;
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hsync-len = <32>;
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hfront-porch = <8>;
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vback-porch = <6>;
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vsync-len = <8>;
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vfront-porch = <9>;
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};
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};
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};

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