[PATCH v10 4/5] ARM: dts: stm32: add display support on stm32f769-disco
From: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Date: 2024-01-27 15:29:03
Also in:
linux-devicetree, lkml
Subsystem:
arm/stm32 architecture, the rest · Maintainers:
Maxime Coquelin, Alexandre Torgue, Linus Torvalds
The patch adds display support on the stm32f769-disco board. Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> --- Changes in v10: - Drop backlight. From a closer analysis of the schematics en.MB1225-F769I-B01_Schematic.pdf and en.mb1166-default-a09-schematic.pdf, it is noticed that the GPIO I14 is connected to an unmounted resistor (n/a), making the backlight functionality via GPIO unusable. Changes in v9: - Rename panel-dsi@0 to panel@0 to fix yaml warnings Changes in v8: - Remove unit name from 'ltdc/port/endpoint@0' to fix the compiling warning: ../arch/arm/boot/dts/st/stm32f769-disco.dts:189.28-191.5: Warning (unit_address_vs_reg): /soc/display-controller@40016800/port/endpoint@0: node has a unit name, but no reg or ranges property arch/arm/boot/dts/st/stm32f769-disco.dts | 64 +++++++++++++++++++++++- 1 file changed, 63 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/st/stm32f769-disco.dts b/arch/arm/boot/dts/st/stm32f769-disco.dts
index 660f85984164..52c5baf58ab9 100644
--- a/arch/arm/boot/dts/st/stm32f769-disco.dts
+++ b/arch/arm/boot/dts/st/stm32f769-disco.dts@@ -41,7 +41,7 @@ */ /dts-v1/; -#include "stm32f746.dtsi" +#include "stm32f769.dtsi" #include "stm32f769-pinctrl.dtsi" #include <dt-bindings/input/input.h> #include <dt-bindings/gpio/gpio.h>
@@ -60,6 +60,19 @@ memory@c0000000 { reg = <0xC0000000 0x1000000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,dma { + compatible = "shared-dma-pool"; + linux,dma-default; + no-map; + size = <0x100000>; + }; + }; + aliases { serial0 = &usart1; };
@@ -114,6 +127,45 @@ &clk_hse { clock-frequency = <25000000>; }; +&dsi { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + dsi_in: endpoint { + remote-endpoint = <<dc_out_dsi>; + }; + }; + + port@1 { + reg = <1>; + dsi_out: endpoint { + remote-endpoint = <&dsi_panel_in>; + }; + }; + }; + + panel0: panel@0 { + compatible = "orisetech,otm8009a"; + reg = <0>; /* dsi virtual channel (0..3) */ + reset-gpios = <&gpioj 15 GPIO_ACTIVE_LOW>; + power-supply = <&vcc_3v3>; + status = "okay"; + + port { + dsi_panel_in: endpoint { + remote-endpoint = <&dsi_out>; + }; + }; + }; +}; + &i2c1 { pinctrl-0 = <&i2c1_pins_b>; pinctrl-names = "default";
@@ -122,6 +174,16 @@ &i2c1 { status = "okay"; }; +<dc { + status = "okay"; + + port { + ltdc_out_dsi: endpoint { + remote-endpoint = <&dsi_in>; + }; + }; +}; + &rtc { status = "okay"; };
--
2.43.0
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