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Message-Id: <20220922134843.3108267-4-m.felsch@pengutronix.de>
Date: Thu, 22 Sep 2022 15:48:42 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: mchehab@...nel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, kishon@...com, vkoul@...nel.org,
laurent.pinchart@...asonboard.com, sakari.ailus@...ux.intel.com,
jacopo@...ndi.org, hverkuil@...all.nl
Cc: linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-media@...r.kernel.org,
kernel@...gutronix.de
Subject: [PATCH v3 3/4] media: dt-bindings: add bindings for Toshiba TC358746
Add the bindings for the Toshiba TC358746 Parallel <-> MIPI-CSI bridge
driver.
Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
Changelog
v3:
- put the mclk comment into the description of #clock-cells
- make bus-type required
- allow all sync values
- allow all possible parallel bus-types
- added Laurent's r-b
v2:
- addded Robs r-b
- s/than/then/
- added hsync/vsync/bus-type, make hsync/vsync required
- fix example indent
---
.../bindings/media/i2c/toshiba,tc358746.yaml | 178 ++++++++++++++++++
1 file changed, 178 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml
new file mode 100644
index 000000000000..b8ba85a2416c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml
@@ -0,0 +1,178 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/toshiba,tc358746.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toshiba TC358746 Parallel to MIPI CSI2 Bridge
+
+maintainers:
+ - Marco Felsch <kernel@...gutronix.de>
+
+description: |-
+ The Toshiba TC358746 converts a parallel video stream into a MIPI CSI-2
+ stream. The direction can be either parallel-in -> csi-out or csi-in ->
+ parallel-out The chip is programmable trough I2C and SPI but the SPI
+ interface is only supported in parallel-in -> csi-out mode.
+
+ Note that the current device tree bindings only support the
+ parallel-in -> csi-out path.
+
+properties:
+ compatible:
+ const: toshiba,tc358746
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ description:
+ The phandle to the reference clock source. This corresponds to the
+ hardware pin REFCLK.
+ maxItems: 1
+
+ clock-names:
+ const: refclk
+
+ "#clock-cells":
+ description: |
+ The bridge can act as clock provider for the sensor. To enable this
+ support #clock-cells must be specified. Attention if this feature is used
+ then the mclk rate must be at least: (2 * link-frequency) / 8
+ `------------------ยด ^
+ internal PLL rate smallest possible
+ mclk-div
+ const: 0
+
+ clock-output-names:
+ description:
+ The clock name of the MCLK output, the default name is tc358746-mclk.
+ maxItems: 1
+
+ vddc-supply:
+ description: Digital core voltage supply, 1.2 volts
+
+ vddio-supply:
+ description: Digital I/O voltage supply, 1.8 volts
+
+ vddmipi-supply:
+ description: MIPI CSI phy voltage supply, 1.2 volts
+
+ reset-gpios:
+ description:
+ The phandle and specifier for the GPIO that controls the chip reset.
+ This corresponds to the hardware pin RESX which is physically active low.
+ maxItems: 1
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ description: Input port
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ hsync-active: true
+ vsync-active: true
+ bus-type:
+ enum: [ 5, 6 ]
+
+ required:
+ - hsync-active
+ - vsync-active
+ - bus-type
+
+ port@1:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ description: Output port
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+
+ clock-noncontinuous: true
+ link-frequencies: true
+
+ required:
+ - data-lanes
+ - link-frequencies
+
+ required:
+ - port@0
+ - port@1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - vddc-supply
+ - vddio-supply
+ - vddmipi-supply
+ - ports
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ csi-bridge@e {
+ compatible = "toshiba,tc358746";
+ reg = <0xe>;
+
+ clocks = <&refclk>;
+ clock-names = "refclk";
+
+ reset-gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+
+ vddc-supply = <&v1_2d>;
+ vddio-supply = <&v1_8d>;
+ vddmipi-supply = <&v1_2d>;
+
+ /* sensor mclk provider */
+ #clock-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Input */
+ port@0 {
+ reg = <0>;
+ tc358746_in: endpoint {
+ remote-endpoint = <&sensor_out>;
+ hsync-active = <0>;
+ vsync-active = <0>;
+ bus-type = <5>;
+ };
+ };
+
+ /* Output */
+ port@1 {
+ reg = <1>;
+ tc358746_out: endpoint {
+ remote-endpoint = <&mipi_csi2_in>;
+ data-lanes = <1 2>;
+ clock-noncontinuous;
+ link-frequencies = /bits/ 64 <216000000>;
+ };
+ };
+ };
+ };
+ };
--
2.30.2
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