[PATCH 3/3] arm64: dts: st: enable display support on stm32mp257f-dk board
From: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Date: 2026-02-05 13:39:52
Also in:
linux-arm-kernel, lkml
Subsystem:
arm/stm32 architecture, the rest · Maintainers:
Maxime Coquelin, Alexandre Torgue, Linus Torvalds
Enable the following IPs on stm32mp257f-dk in order to get display: * LTDC * LVDS * WSVGA LVDS panel (1024x600) * Panel LVDS backlight as GPIO backlight * ILI2511 i2c touchscreen Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> --- arch/arm64/boot/dts/st/stm32mp257f-dk.dts | 90 +++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+)
diff --git a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
index 4e45562ceb3dabb19eca3340337b364f63508215..b60c13614cfb9207b8b541ee8bde4ae9aab937a8 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-dk.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-dk.dts@@ -55,6 +55,43 @@ led-blue { }; }; + panel_lvds: display { + compatible = "edt,etml0700z9ndha", "panel-lvds"; + enable-gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>; + backlight = <&panel_lvds_backlight>; + power-supply = <&scmi_v3v3>; + width-mm = <156>; + height-mm = <92>; + data-mapping = "vesa-24"; + status = "okay"; + + panel-timing { + clock-frequency = <54000000>; + hactive = <1024>; + vactive = <600>; + hfront-porch = <150>; + hback-porch = <150>; + hsync-len = <21>; + vfront-porch = <24>; + vback-porch = <24>; + vsync-len = <21>; + }; + + port { + lvds_panel_in: endpoint { + remote-endpoint = <&lvds_out0>; + }; + }; + }; + + panel_lvds_backlight: backlight { + compatible = "gpio-backlight"; + gpios = <&gpioi 4 GPIO_ACTIVE_HIGH>; + default-on; + status = "okay"; + }; + + memory@80000000 { device_type = "memory"; reg = <0x0 0x80000000 0x1 0x0>;
@@ -100,6 +137,59 @@ phy1_eth1: ethernet-phy@1 { }; }; +&i2c2 { + pinctrl-names = "default", "sleep"; + pinctrl-0 = <&i2c2_pins_b>; + pinctrl-1 = <&i2c2_sleep_pins_b>; + i2c-scl-rising-time-ns = <108>; + i2c-scl-falling-time-ns = <12>; + clock-frequency = <400000>; + status = "okay"; + /* spare dmas for other usage */ + /delete-property/dmas; + /delete-property/dma-names; + + ili2511: ili2511@41 { + compatible = "ilitek,ili251x"; + reg = <0x41>; + interrupt-parent = <&gpioi>; + interrupts = <6 IRQ_TYPE_EDGE_FALLING>; + reset-gpios = <&gpioi 0 GPIO_ACTIVE_LOW>; + status = "okay"; + }; +}; + +<dc { + status = "okay"; + port { + ltdc_ep0_out: endpoint { + remote-endpoint = <&lvds_in>; + }; + }; +}; + +&lvds { + status = "okay"; + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + lvds_in: endpoint { + remote-endpoint = <<dc_ep0_out>; + }; + }; + + port@1 { + reg = <1>; + lvds_out0: endpoint { + remote-endpoint = <&lvds_panel_in>; + }; + }; + }; +}; + &scmi_regu { scmi_vddio1: regulator@0 { regulator-min-microvolt = <1800000>;
--
2.43.0