# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/allwinner,sun8i-r40-tcon-top.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Allwinner R40 TCON TOP
maintainers:
- Chen-Yu Tsai <wens@csie.org>
- Maxime Ripard <mripard@kernel.org>
description: |
TCON TOPs main purpose is to configure whole display pipeline. It
determines relationships between mixers and TCONs, selects source
TCON for HDMI, muxes LCD and TV encoder GPIO output, selects TV
encoder clock source and contains additional TV TCON and DSI gates.
It allows display pipeline to be configured in very different ways:
/ LCD0/LVDS0
/ [0] TCON-LCD0
| \ MIPI DSI
mixer0 |
\ / [1] TCON-LCD1 - LCD1/LVDS1
TCON-TOP
/ \ [2] TCON-TV0 [0] - TVE0/RGB
mixer1 | \
| TCON-TOP - HDMI
| /
\ [3] TCON-TV1 [1] - TVE1/RGB
Note that both TCON TOP references same physical unit. Both mixers
can be connected to any TCON. Not all TCON TOP variants support all
features.
properties:
"#clock-cells":
const: 1
compatible:
enum:
- allwinner,sun8i-r40-tcon-top
- allwinner,sun20i-d1-tcon-top
- allwinner,sun50i-h6-tcon-top
reg:
maxItems: 1
clocks:
minItems: 2
maxItems: 6
clock-names:
minItems: 2
maxItems: 6
clock-output-names:
minItems: 1
maxItems: 3
resets:
maxItems: 1
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
description: |
Input endpoint for Mixer 0 mux.
port@1:
$ref: /schemas/graph.yaml#/properties/port
description: |
Output endpoint for Mixer 0 mux
port@2:
$ref: /schemas/graph.yaml#/properties/port
description: |
Input endpoint for Mixer 1 mux.
port@3:
$ref: /schemas/graph.yaml#/properties/port
description: |
Output endpoint for Mixer 1 mux
port@4:
$ref: /schemas/graph.yaml#/properties/port
description: |
Input endpoint for HDMI mux.
port@5:
$ref: /schemas/graph.yaml#/properties/port
description: |
Output endpoint for HDMI mux
required:
- port@0
- port@1
- port@4
- port@5
required:
- "#clock-cells"
- compatible
- reg
- clocks
- clock-names
- clock-output-names
- resets
- ports
additionalProperties: false
allOf:
- if:
properties:
compatible:
contains:
const: allwinner,sun8i-r40-tcon-top
then:
properties:
clocks:
items:
- description: The TCON TOP interface clock
- description: The TCON TOP TV0 clock
- description: The TCON TOP TVE0 clock
- description: The TCON TOP TV1 clock
- description: The TCON TOP TVE1 clock
- description: The TCON TOP MIPI DSI clock
clock-names:
items:
- const: bus
- const: tcon-tv0
- const: tve0
- const: tcon-tv1
- const: tve1
- const: dsi
clock-output-names:
items:
- description: TCON TV0 output clock name
- description: TCON TV1 output clock name
- description: DSI output clock name
ports:
required:
- port@2
- port@3
- if:
properties:
compatible:
contains:
const: allwinner,sun20i-d1-tcon-top
then:
properties:
clocks:
items:
- description: The TCON TOP interface clock
- description: The TCON TOP TV0 clock
- description: The TCON TOP TVE0 clock
- description: The TCON TOP MIPI DSI clock
clock-names:
items:
- const: bus
- const: tcon-tv0
- const: tve0
- const: dsi
clock-output-names:
items:
- description: TCON TV0 output clock name
- description: DSI output clock name
- if:
properties:
compatible:
contains:
const: allwinner,sun50i-h6-tcon-top
then:
properties:
clocks:
items:
- description: The TCON TOP interface clock
- description: The TCON TOP TV0 clock
clock-names:
items:
- const: bus
- const: tcon-tv0
clock-output-names:
items:
- description: TCON TV0 output clock name
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/sun8i-r40-ccu.h>
#include <dt-bindings/reset/sun8i-r40-ccu.h>
tcon_top: tcon-top@1c70000 {
compatible = "allwinner,sun8i-r40-tcon-top";
reg = <0x01c70000 0x1000>;
clocks = <&ccu CLK_BUS_TCON_TOP>,
<&ccu CLK_TCON_TV0>,
<&ccu CLK_TVE0>,
<&ccu CLK_TCON_TV1>,
<&ccu CLK_TVE1>,
<&ccu CLK_DSI_DPHY>;
clock-names = "bus",
"tcon-tv0",
"tve0",
"tcon-tv1",
"tve1",
"dsi";
clock-output-names = "tcon-top-tv0",
"tcon-top-tv1",
"tcon-top-dsi";
resets = <&ccu RST_BUS_TCON_TOP>;
#clock-cells = <1>;
ports {
#address-cells = <1>;
#size-cells = <0>;
tcon_top_mixer0_in: port@0 {
reg = <0>;
tcon_top_mixer0_in_mixer0: endpoint {
remote-endpoint = <&mixer0_out_tcon_top>;
};
};
tcon_top_mixer0_out: port@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
tcon_top_mixer0_out_tcon_lcd0: endpoint@0 {
reg = <0>;
};
tcon_top_mixer0_out_tcon_lcd1: endpoint@1 {
reg = <1>;
};
tcon_top_mixer0_out_tcon_tv0: endpoint@2 {
reg = <2>;
remote-endpoint = <&tcon_tv0_in_tcon_top_mixer0>;
};
tcon_top_mixer0_out_tcon_tv1: endpoint@3 {
reg = <3>;
remote-endpoint = <&tcon_tv1_in_tcon_top_mixer0>;
};
};
tcon_top_mixer1_in: port@2 {
#address-cells = <1>;
#size-cells = <0>;
reg = <2>;
tcon_top_mixer1_in_mixer1: endpoint@1 {
reg = <1>;
remote-endpoint = <&mixer1_out_tcon_top>;
};
};
tcon_top_mixer1_out: port@3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
tcon_top_mixer1_out_tcon_lcd0: endpoint@0 {
reg = <0>;
};
tcon_top_mixer1_out_tcon_lcd1: endpoint@1 {
reg = <1>;
};
tcon_top_mixer1_out_tcon_tv0: endpoint@2 {
reg = <2>;
remote-endpoint = <&tcon_tv0_in_tcon_top_mixer1>;
};
tcon_top_mixer1_out_tcon_tv1: endpoint@3 {
reg = <3>;
remote-endpoint = <&tcon_tv1_in_tcon_top_mixer1>;
};
};
tcon_top_hdmi_in: port@4 {
#address-cells = <1>;
#size-cells = <0>;
reg = <4>;
tcon_top_hdmi_in_tcon_tv0: endpoint@0 {
reg = <0>;
remote-endpoint = <&tcon_tv0_out_tcon_top>;
};
tcon_top_hdmi_in_tcon_tv1: endpoint@1 {
reg = <1>;
remote-endpoint = <&tcon_tv1_out_tcon_top>;
};
};
tcon_top_hdmi_out: port@5 {
reg = <5>;
tcon_top_hdmi_out_hdmi: endpoint {
remote-endpoint = <&hdmi_in_tcon_top>;
};
};
};
};
...