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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/st,stm32mp25-lvds.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: STMicroelectronics STM32 LVDS Display Interface Transmitter
maintainers:
- Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
- Yannick Fertre <yannick.fertre@foss.st.com>
description: |
The STMicroelectronics STM32 LVDS Display Interface Transmitter handles the
LVDS protocol: it maps the pixels received from the upstream Pixel-DMA (LTDC)
onto the LVDS PHY.
It is composed of three sub blocks:
- LVDS host: handles the LVDS protocol (FPD / OpenLDI) and maps its input
pixels onto the data lanes of the PHY
- LVDS PHY: parallelize the data and drives the LVDS data lanes
- LVDS wrapper: handles top-level settings
The LVDS controller driver supports the following high-level features:
- FDP-Link-I and OpenLDI (v0.95) protocols
- Single-Link or Dual-Link operation
- Single-Display or Double-Display (with the same content duplicated on both)
- Flexible Bit-Mapping, including JEIDA and VESA
- RGB888 or RGB666 output
- Synchronous design, with one input pixel per clock cycle
properties:
compatible:
oneOf:
- items:
- enum:
- st,stm32mp255-lvds
- const: st,stm32mp25-lvds
- const: st,stm32mp25-lvds
"#clock-cells":
const: 0
description:
Provides the internal LVDS PHY clock to the framework.
reg:
maxItems: 1
clocks:
items:
- description: APB peripheral clock
- description: Reference clock for the internal PLL
clock-names:
items:
- const: pclk
- const: ref
resets:
maxItems: 1
access-controllers:
maxItems: 1
power-domains:
maxItems: 1
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
description:
LVDS input port node, connected to the LTDC RGB output port.
port@1:
$ref: /schemas/graph.yaml#/properties/port
description:
LVDS output port node, connected to a panel or bridge input port.
required:
- port@0
- port@1
required:
- compatible
- "#clock-cells"
- reg
- clocks
- clock-names
- resets
- ports
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/st,stm32mp25-rcc.h>
#include <dt-bindings/reset/st,stm32mp25-rcc.h>
lvds: lvds@48060000 {
compatible = "st,stm32mp25-lvds";
reg = <0x48060000 0x2000>;
#clock-cells = <0>;
clocks = <&rcc CK_BUS_LVDS>, <&rcc CK_KER_LVDSPHY>;
clock-names = "pclk", "ref";
resets = <&rcc LVDS_R>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
lvds_in: endpoint {
remote-endpoint = <<dc_ep1_out>;
};
};
port@1 {
reg = <1>;
lvds_out0: endpoint {
remote-endpoint = <&lvds_panel_in>;
};
};
};
};
...
|
