Describe the Texas Instruments DS90UB954-Q1, a 2-input MIPI CSI-2 video deserializer with I2C Address Translator and remote GPIOs. Signed-off-by: Luca Ceresoli <luca@xxxxxxxxxxxxxxxx> --- Changes RFCv2 -> RFCv3: - rewrite in yaml - use new layout based on remote-chips under the main deser node - new clock configuration based on common clock framework Changes RFCv1 -> RFCv2: - add explicit aliases for the FPD-link RX ports (optional) - add proper remote GPIO description --- .../bindings/media/i2c/ti,ds90ub954-q1.yaml | 235 ++++++++++++++++++ MAINTAINERS | 6 + 2 files changed, 241 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.yaml b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.yaml new file mode 100644 index 000000000000..95dc3d22f5d8 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.yaml @@ -0,0 +1,235 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2019 Renesas Electronics Corp. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/ti,ds90ub954-q1.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Texas Instruments DS90UB954-Q1 dual video deserializer + +maintainers: + - Luca Ceresoli <luca@xxxxxxxxxxxxxxxx> + +description: | + The TI DS90UB954-Q1 is a MIPI CSI-2 video deserializer that forwards + video streams from up to two FPD-Link 3 connections to a MIPI CSI-2 + output. It also allows access to remote I2C and GPIO. + +properties: + compatible: + const: ti,ds90ub954-q1 + + reg: + description: | + main I2C slave address; optionally aliases for RX port registers and + remote serializers. The main address is mandatory and must be the + first, others are optional and fall back to defaults if not + specified. See "reg-names". + + reg-names: + description: | + Names of I2C address used to communicate with the chip, must match + the "reg" values; mandatory if there are 2 or more addresses. + "main" is the main I2C address, used to access shared registers. + "rxport0" and "rxport1" are the I2C alias to access FPD-link RX + port specific registers; must not be used by other slaves on the + same bus. "ser0" and "ser1" are the I2C alias to access the remote + serializer connected on each FPD-link RX port; must not be used by + other slaves on the same bus. + minItems: 1 + maxItems: 5 + items: + - const: main + - const: rxport0 + - const: rxport1 + - const: ser0 + - const: ser1 + + clocks: + description: provider of the clock on the XIN/REFCLK pin + maxItems: 1 + + interrupts: + maxItems: 1 + + reset-gpios: + description: chip reset GPIO connected to PDB pin (active low) + + i2c-alias-pool: + description: | + list of I2C addresses that are known to be available on the "local" + (SoC-to-deser) I2C bus; they will be picked at runtime and used as + aliases to reach remote I2C chips + + '#clock-cells': + description: | + the DS90UB954 provides the FPD line rate clock to the serializer + const: 0 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + patternProperties: + '^port@[01]$': + $ref: /schemas/graph.yaml#/$defs/port-base + description: FPD-Link RX port 0 (RIN0+/RIN0- pins) + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + '^port@2$': + $ref: /schemas/graph.yaml#/properties/port + description: MIPI-CSI2 TX port + + remote-chips: + type: object + + properties: + '#address-cells': + const: 1 + '#size-cells': + const: 0 + + patternProperties: + '^remote-chip@([01]+)$': + type: object + $ref: /schemas/media/i2c/ti,ds90ub953-q1.yaml# + + required: + - '#address-cells' + - '#size-cells' + + additionalProperties: false + + i2c-atr: + description: | + Each child describes the I2C bus on the remote side of an RX port + type: object + + properties: + '#address-cells': + const: 1 + '#size-cells': + const: 0 + + patternProperties: + '^i2c@([01]+)$': + type: object + + properties: + reg: + maxItems: 1 + '#address-cells': + const: 1 + '#size-cells': + const: 0 + clock-frequency: + minimum: 1 + maximum: 1000000 + + additionalProperties: false + +required: + - compatible + - reg + - clocks + - ports + - remote-chips + - i2c-atr + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/media/ds90ub953.h> + + i2c@0 { + reg = <0x0 0x100>; + #address-cells = <1>; + #size-cells = <0>; + + deser: deser@3d { + compatible = "ti,ds90ub954-q1"; + reg-names = "main", "rxport0", "rxport1", "ser0", "ser1"; + reg = <0x3d>, <0x40>, <0x41>, <0x44>, <0x45>; + clocks = <&clk_25M>; + interrupt-parent = <&gic>; + interrupts = <3 1 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>; + + #clock-cells = <0>; + + i2c-alias-pool = /bits/ 16 <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + ds90ub954_fpd3_in0: endpoint { + remote-endpoint = <&sensor_0_out>; + }; + }; + + port@2 { + reg = <2>; + ds90ub954_mipi_out0: endpoint { + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <400000000>; + remote-endpoint = <&csirx_0_in>; + }; + }; + }; + + remote-chips { + #address-cells = <1>; + #size-cells = <0>; + + des0_ser0: remote-chip@0 { + reg = <0>; + compatible = "ti,ds90ub953-q1"; + clocks = <&deser>; + ti,gpio-functions = + <DS90_GPIO_FUNC_UNUSED + DS90_GPIO_FUNC_OUTPUT_REMOTE + DS90_GPIO_FUNC_UNUSED + DS90_GPIO_FUNC_UNUSED>; + + gpio-controller; + #gpio-cells = <2>; + #clock-cells = <0>; + }; + }; + + i2c-atr { + #address-cells = <1>; + #size-cells = <0>; + + remote_i2c0: i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + + sensor_0@1a { + compatible = "sony,imx274"; + reg = <0x1a>; + + reset-gpios = <&des0_ser0 1 GPIO_ACTIVE_LOW>; + + port { + sensor_0_out: endpoint { + remote-endpoint = <&ds90ub954_fpd3_in0>; + }; + }; + }; + }; + }; + }; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 4429ce035496..f0156062f788 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19097,6 +19097,12 @@ S: Maintained F: Documentation/devicetree/bindings/media/i2c/ti,ds90ub953-q1.yaml F: include/dt-bindings/media/ds90ub953.h +TEXAS INSTRUMENTS DS90UB954 VIDEO DESERIALIZER DRIVER +M: Luca Ceresoli <luca@xxxxxxxxxxxxxxxx> +L: linux-media@xxxxxxxxxxxxxxx +S: Maintained +F: Documentation/devicetree/bindings/media/i2c/ti,ds90ub954-q1.yaml + TEXAS INSTRUMENTS' SYSTEM CONTROL INTERFACE (TISCI) PROTOCOL DRIVER M: Nishanth Menon <nm@xxxxxx> M: Tero Kristo <kristo@xxxxxxxxxx> -- 2.25.1
