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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/bridge/sil,sii9022.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Silicon Image sii902x HDMI bridge
maintainers:
- Boris Brezillon <bbrezillon@kernel.org>
properties:
compatible:
oneOf:
- items:
- enum:
- sil,sii9022-cpi # CEC Programming Interface
- sil,sii9022-tpi # Transmitter Programming Interface
- const: sil,sii9022
- const: sil,sii9022
reg:
maxItems: 1
interrupts:
maxItems: 1
description: Interrupt line used to inform the host about hotplug events.
reset-gpios:
maxItems: 1
iovcc-supply:
description: I/O Supply Voltage (1.8V or 3.3V)
cvcc12-supply:
description: Digital Core Supply Voltage (1.2V)
'#sound-dai-cells':
enum: [ 0, 1 ]
description: |
<0> if only I2S or S/PDIF pin is wired,
<1> if both are wired.
HDMI audio is configured only if this property is found.
If HDMI audio is configured, the sii902x device becomes an I2S and/or
S/PDIF audio codec component (e.g. a digital audio sink), that can be
used in configuring full audio devices with simple-card or
audio-graph-card bindings. See their binding documents on how to describe
the way the
sii902x device is connected to the rest of the audio system:
Documentation/devicetree/bindings/sound/simple-card.yaml
Documentation/devicetree/bindings/sound/audio-graph-card.yaml
Note: In case of the audio-graph-card binding the used port index should
be 3.
sil,i2s-data-lanes:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 4
uniqueItems: true
items:
enum: [ 0, 1, 2, 3 ]
description:
Each integer indicates which I2S pin is connected to which audio FIFO.
The first integer selects the I2S audio pin for the first audio FIFO#0
(HDMI channels 1&2), the second for FIFO#1 (HDMI channels 3&4), and so
on. There are 4 FIFOs and 4 I2S pins (SD0 - SD3). Any I2S pin can be
connected to any FIFO, but there can be no gaps. E.g. an I2S pin must be
mapped to FIFO#0 and FIFO#1 before mapping a channel to FIFO#2. The
default value is <0>, describing SD0 pin being routed to HDMI audio
FIFO#0.
clocks:
maxItems: 1
description: MCLK input. MCLK can be used to produce HDMI audio CTS values.
clock-names:
const: mclk
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
description: Parallel RGB input port
port@1:
$ref: /schemas/graph.yaml#/properties/port
description: HDMI output port
port@3:
$ref: /schemas/graph.yaml#/properties/port
description: Sound input port
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
hdmi-bridge@39 {
compatible = "sil,sii9022";
reg = <0x39>;
reset-gpios = <&pioA 1 0>;
iovcc-supply = <&v3v3_hdmi>;
cvcc12-supply = <&v1v2_hdmi>;
#sound-dai-cells = <0>;
sil,i2s-data-lanes = < 0 1 2 >;
clocks = <&mclk>;
clock-names = "mclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
bridge_in: endpoint {
remote-endpoint = <&dc_out>;
};
};
};
};
};
|
