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Message-ID: <20250714-it61620-0714-v1-1-3761164d0b98@ite.com.tw>
Date: Mon, 14 Jul 2025 11:14:32 +0800
From: Pet Weng <pet.weng@....com.tw>
To: Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong
<neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Laurent Pinchart
<Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej
Skrabec <jernej.skrabec@...il.com>,
Maarten Lankhorst
<maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Rob Herring <robh@...nel.org>,
Krzysztof
Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
CC: <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Hermes Wu <hermes.Wu@....com.tw>,
Kenneth
Hung <kenneth.Hung@....com.tw>,
Pet Weng <pet.weng@....com.tw>, Pin-yen Lin
<treapking@...gle.com>
Subject: [PATCH 1/3] dt-binding: display: Add a device tree binding for the
ITE IT61620 MIPI DSI to HDMI bridge
This chip receives MIPI DSI input and outputs HDMI, and is commonly
connected to SoCs via I2C and DSI.
Signed-off-by: Pet Weng <pet.weng@....com.tw>
---
.../bindings/display/bridge/ite,it61620.yaml | 138 +++++++++++++++++++++
1 file changed, 138 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..ff8ff390a1c0c31bb05ba0e237490cff2942cd05
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it61620.yaml
@@ -0,0 +1,138 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/ite,it61620.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ITE IT61620 MIPI DSI to HDMI Bridge
+
+maintainers:
+ - Pet Weng <pet.weng@....com.tw>
+
+description: |
+ The ITE IT61620 is a high-performance, low-power HDMI bridge that converts
+ MIPI DSI input to HDMI 1.4b TMDS output. It supports up to 4 lanes of MIPI
+ D-PHY 2.0 input at 2.5Gbps per lane (10Gbps total), compatible with DSI-2 v2.0.
+
+ The HDMI transmitter side supports up to 4Kx2K@...z resolutions, and is
+ compliant with HDMI 1.4b and HDCP 1.4.
+
+ For audio, the IT61620 supports up to 8-channel LPCM via I2S (multi-line or
+ TDM mode), with optional S/PDIF or DSD (for SACD). It supports audio
+ sampling rates up to 192kHz.
+
+allOf:
+ - $ref: /schemas/sound/dai-common.yaml#
+
+properties:
+ compatible:
+ const: ite,it61620
+
+ reg:
+ maxItems: 1
+
+ interrupts-extended:
+ maxItems: 1
+ description: interrupt specifier of INT pin
+
+ reset-gpios:
+ maxItems: 1
+ description: gpio specifier of RESET pin
+
+ ivdd-supply:
+ description: core voltage
+
+ ovdd-supply:
+ description: I/O voltage
+
+ ovdd1833-supply:
+ description: flexible I/O votage
+
+ pinctrl-names:
+ items:
+ - const: default
+
+ pinctrl-0:
+ maxItems: 1
+
+ "#sound-dai-cells":
+ const: 0
+
+ dsi-lanes:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Number of DSI input lanes used (1, 2 or 4)
+ minimum: 1
+ maximum: 4
+ default: 4
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ description: A port node pointing to DSI host port node
+
+ port@1:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ description: Video port for HDMI output
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - interrupts-extended
+ - reset-gpios
+ - ivdd-supply
+ - ovdd-supply
+ - ovdd1833-supply
+ - ports
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hdmibrdg: ite61620@58 {
+ compatible = "ite,it61620";
+ reg = <0x58>;
+ #sound-dai-cells = <0>;
+ interrupts-extended = <&pio 128 IRQ_TYPE_LEVEL_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&it61620_pins>;
+ reset-gpios = <&pio 127 GPIO_ACTIVE_LOW>;
+ ivdd-supply = <&pp1000_hdmi_x>;
+ ovdd-supply = <&pp3300_vio28_x>;
+ ovdd1833-supply = <&pp1800_vcamio_x>;
+ dsi-lanes = <4>;
+ status = "okay";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ it61620_dsi_in: endpoint {
+ remote-endpoint = <&dsi_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ it61620_hdmi_out: endpoint {
+ remote-endpoint = <&hdmi_connector_in>;
+ };
+ };
+ };
+ };
+ };
--
2.34.1
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