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| author | Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com> | 2024-02-23 15:36:48 +0300 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2024-04-25 16:00:30 +0300 |
| commit | dcb12b83ad69c0f12aa07a3e0203085dcef8765e (patch) | |
| tree | 44e39a21f460e8246701c393a5126368c1123335 | |
| parent | ce90d0c87f895ffbdb6c3da5d9e07ac3549e5edb (diff) | |
| download | linux-dcb12b83ad69c0f12aa07a3e0203085dcef8765e.tar.xz | |
ARM: dts: stm32: add LTDC support for STM32MP13x SoC family
STM32MP13x SoC family embeds a new version of LTDC (Liquid crystal
display - Thin film transistor) Display Controller.
It provides a parallel digital RGB (red, green, blue) and signals for
horizontal, vertical synchronization, pixel clock and data enable as
output to interface directly to a variety of LCD-TFT panels.
Main features
* 2 input layers blended together to compose the display
* Cropping of layers from any input size and location
* Multiple input pixel formats:
– Predefined ARGB, with 7 formats: ARGB8888, ABGR8888, RGBA8888,
BGRA8888, RGB565, BGR565, RGB888packed.
– Flexible ARGB, allowing any width and location for A,R,G,B
components.
– Predefined YUV, with 3 formats: YUV422-1L (FourCC: YUYV,
Interleaved), YUV420-2L (FourCC: NV12, semi planar), YUV420-3L
(FourCC: Yxx, full planar) with some flexibility on the sequence of
the component.
* Color look-up table (CLUT) up to 256 colors (256x24 bits) per layer
* Color transparency keying
* Composition with flexible window position and size versus output
display
* Blending with flexible layer order and alpha value (per pixel or
constant)
* Background underlying color
* Gamma with non-linear configurable table
* Dithering for output with less bits per component (pseudo-random on
2 bits)
* Polarity inversion for HSync, VSync, and DataEnable outputs
* Output as RGB888 24 bpp or YUV422 16 bpp
* Secure layer (using Layer2) capability, with grouped regs and
additional interrupt set
* Interrupts based on 7 different events
* AXI master interface with long efficient bursts (64 or 128 bytes)
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
| -rw-r--r-- | arch/arm/boot/dts/st/stm32mp135.dtsi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/st/stm32mp135.dtsi b/arch/arm/boot/dts/st/stm32mp135.dtsi index 68d32f9f5314..834a4d545fe4 100644 --- a/arch/arm/boot/dts/st/stm32mp135.dtsi +++ b/arch/arm/boot/dts/st/stm32mp135.dtsi @@ -19,5 +19,16 @@ port { }; }; + + ltdc: display-controller@5a001000 { + compatible = "st,stm32-ltdc"; + reg = <0x5a001000 0x400>; + interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&rcc LTDC_PX>; + clock-names = "lcd"; + resets = <&scmi_reset RST_SCMI_LTDC>; + status = "disabled"; + }; }; }; |