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Message-ID: <20250309084814.3114794-12-demonsingur@gmail.com>
Date: Sun, 9 Mar 2025 10:48:03 +0200
From: Cosmin Tanislav <demonsingur@...il.com>
To:
Cc: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
Cosmin Tanislav <cosmin.tanislav@...log.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Niklas Söderlund <niklas.soderlund@...natech.se>,
Julien Massot <julien.massot@...labora.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
Bjorn Andersson <quic_bjorande@...cinc.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
Arnd Bergmann <arnd@...db.de>,
Taniya Das <quic_tdas@...cinc.com>,
Biju Das <biju.das.jz@...renesas.com>,
NÃcolas F . R . A . Prado <nfraprado@...labora.com>,
Eric Biggers <ebiggers@...gle.com>,
Javier Carrasco <javier.carrasco@...fvision.net>,
Ross Burton <ross.burton@....com>,
Hans Verkuil <hverkuil@...all.nl>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Zhi Mao <zhi.mao@...iatek.com>,
Kieran Bingham <kieran.bingham@...asonboard.com>,
Dongcheng Yan <dongcheng.yan@...el.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Benjamin Mugnier <benjamin.mugnier@...s.st.com>,
Tommaso Merciai <tomm.merciai@...il.com>,
Dan Carpenter <dan.carpenter@...aro.org>,
Ihor Matushchak <ihor.matushchak@...box.net>,
Laurentiu Palcu <laurentiu.palcu@....nxp.com>,
linux-media@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-staging@...ts.linux.dev,
linux-gpio@...r.kernel.org,
Cosmin Tanislav <demonsingur@...il.com>
Subject: [RFC PATCH v2 11/16] dt-bindings: media: i2c: add MAX9296A, MAX96716A, MAX96792A
The MAX9296A deserializer converts single or dual serial inputs to MIPI
CSI-2 outputs. The GMSL2 links operate at a fixed rate of 3Gbps or 6Gbps
in the forward direction and 187.5Mbps in the reverse direction.
In GMSL1 mode, each serial link can be paired with 3.12Gbps or 1.5Gbps
GMSL1 serializers or operate up to 4.5Gbps with GMSL2 serializers with
GMSL1 backward compatibility. The MAX9296A supports mixed GMSL2 and
GMSL1 links. The serial inputs operate independently, allowing videos
with different timings and resolutions to be received on each input.
MAX96716A supports both tunnel and pixel mode.
MAX96792A supports both tunnel and pixel mode, and has two GMSL3 links.
Signed-off-by: Cosmin Tanislav <demonsingur@...il.com>
---
.../bindings/media/i2c/maxim,max9296a.yaml | 281 ++++++++++++++++++
MAINTAINERS | 6 +
2 files changed, 287 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9296a.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9296a.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9296a.yaml
new file mode 100644
index 000000000000..97731549d161
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9296a.yaml
@@ -0,0 +1,281 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2024 Collabora Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/maxim,max9296a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX9296A GMSL2 to CSI-2 Deserializer
+
+maintainers:
+ - Cosmin Tanislav <cosmin.tanislav@...log.com>
+
+description:
+ The MAX9296A deserializer converts single or dual serial inputs to
+ MIPI CSI-2 outputs. The GMSL2 links operate at a fixed rate of 3Gbps
+ or 6Gbps in the forward direction and 187.5Mbps in the reverse
+ direction. In GMSL1 mode, each serial link can be paired with 3.12Gbps
+ or 1.5Gbps GMSL1 serializers or operate up to 4.5Gbps with GMSL2
+ serializers with GMSL1 backward compatibility. The MAX9296A supports
+ mixed GMSL2 and GMSL1 links. The serial inputs operate independently,
+ allowing videos with different timings and resolutions to be received
+ on each input.
+
+ MAX96716A supports both tunnel and pixel mode.
+ MAX96792A supports both tunnel and pixel mode, and has two GMSL3 links.
+
+properties:
+ compatible:
+ enum:
+ - maxim,max9296a
+ - maxim,max96716a
+ - maxim,max96792a
+
+ reg:
+ maxItems: 1
+
+ powerdown-gpios:
+ maxItems: 1
+ description: Specifier for the GPIO connected to the PWDNB pin.
+
+ port0-poc-supply:
+ description: Regulator providing Power over Coax for GMSL port 0
+
+ port1-poc-supply:
+ description: Regulator providing Power over Coax for GMSL port 1
+
+ i2c-mux:
+ $ref: /schemas/i2c/i2c-mux.yaml#
+ unevaluatedProperties: false
+ patternProperties:
+ '^i2c@[0-1]$':
+ $ref: /schemas/i2c/i2c-controller.yaml#
+ unevaluatedProperties: false
+ properties:
+ reg:
+ items:
+ minimum: 0
+ maximum: 1
+
+ i2c-alias-pool:
+ maxItems: 2
+
+ i2c-atr:
+ type: object
+ additionalProperties: false
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ patternProperties:
+ '^i2c@[0-1]$':
+ $ref: /schemas/i2c/i2c-controller.yaml#
+ unevaluatedProperties: false
+ properties:
+ reg:
+ items:
+ minimum: 0
+ maximum: 1
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ patternProperties:
+ '^port@[0-1]$':
+ $ref: /schemas/graph.yaml#/properties/port
+ unevaluatedProperties: false
+ description: GMSL Input
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ description: Endpoint for GMSL2-Link port.
+
+ '^port@[2-3]$':
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: CSI-2 Output port
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+
+ lane-polarities:
+ minItems: 1
+ maxItems: 5
+
+ link-frequencies:
+ maxItems: 1
+
+ required:
+ - data-lanes
+
+ anyOf:
+ - required:
+ - port@2
+ - required:
+ - port@3
+
+required:
+ - compatible
+ - reg
+ - ports
+
+additionalProperties: false
+
+allOf:
+ - $ref: /schemas/i2c/i2c-atr.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - maxim,max9296a
+ - maxim,max96792a
+ then:
+ not:
+ required: [i2c-mux]
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - maxim,max96716a
+ then:
+ not:
+ required: [i2c-atr]
+
+dependentRequired:
+ i2c-atr: [i2c-alias-pool]
+ i2c-alias-pool: [i2c-atr]
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/media/video-interfaces.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ deserializer@28 {
+ compatible = "maxim,max9296a";
+ reg = <0x28>;
+ powerdown-gpios = <&main_gpio0 37 GPIO_ACTIVE_LOW>;
+
+ i2c-alias-pool = <0x40 0x41>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ des_gmsl_in_0: endpoint {
+ remote-endpoint = <&ser_0_gmsl_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ des_gmsl_in_1: endpoint {
+ remote-endpoint = <&ser_1_gmsl_out>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+ des_csi_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ link-frequencies = /bits/ 64 <400000000>;
+ remote-endpoint = <&csi_in>;
+ };
+ };
+ };
+
+ i2c-atr {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ serializer@40 {
+ compatible = "maxim,max96717";
+ reg = <0x40>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ser_0_csi_in: endpoint {
+ data-lanes = <1 2>;
+ remote-endpoint = <&sensor_0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ ser_0_gmsl_out: endpoint {
+ remote-endpoint = <&des_gmsl_in_0>;
+ };
+ };
+ };
+ };
+ };
+
+ i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ serializer@40 {
+ compatible = "maxim,max96717";
+ reg = <0x40>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ ser_1_csi_in: endpoint {
+ data-lanes = <1 2>;
+ remote-endpoint = <&sensor_1_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ ser_1_gmsl_out: endpoint {
+ remote-endpoint = <&des_gmsl_in_1>;
+ };
+ };
+ };
+ };
+ };
+ };
+ };
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index abf3afc95fc9..c1e01668e81a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14220,6 +14220,12 @@ S: Maintained
F: Documentation/devicetree/bindings/iio/proximity/maxbotix,mb1232.yaml
F: drivers/iio/proximity/mb1232.c
+MAXIM GMSL2 SERIALIZERS AND DESERIALIZERS
+M: Cosmin Tanislav <cosmin.tanislav@...log.com>
+L: linux-media@...r.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/i2c/maxim,max9296a.yaml
+
MAXIM MAX11205 DRIVER
M: Ramona Bolboaca <ramona.bolboaca@...log.com>
L: linux-iio@...r.kernel.org
--
2.48.1
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