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784c99331c
Add bindings for Solomon SSD2825 MIPI master bridge chip that connects an application processor with traditional parallel LCD interface and an LCD driver with MIPI slave interface. The SSD2825 supports both parallel RGB interface and serial SPI interface. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250730055424.6718-2-clamor95@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
142 lines
2.9 KiB
YAML
142 lines
2.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/bridge/solomon,ssd2825.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Solomon SSD2825 RGB to MIPI-DSI bridge
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maintainers:
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- Svyatoslav Ryhel <clamor95@gmail.com>
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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properties:
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compatible:
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const: solomon,ssd2825
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reg:
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maxItems: 1
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reset-gpios: true
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dvdd-supply:
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description: Regulator for 1.2V digital power supply.
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avdd-supply:
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description: Regulator for 1.2V analog power supply.
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vddio-supply:
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description: Regulator for 1.8V IO power supply.
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spi-max-frequency:
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maximum: 1000000
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spi-cpha: true
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spi-cpol: true
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clocks:
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maxItems: 1
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description: Reference TX_CLK used before PLL is locked.
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solomon,hs-zero-delay-ns:
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description:
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HS zero delay period
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minimum: 0
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maximum: 1700
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default: 133
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solomon,hs-prep-delay-ns:
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description:
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HS prep delay period
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minimum: 0
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maximum: 1728
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default: 40
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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properties:
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port@0:
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$ref: /schemas/graph.yaml#/$defs/port-base
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unevaluatedProperties: false
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description:
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Video port for RGB input
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properties:
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endpoint:
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$ref: /schemas/graph.yaml#/$defs/endpoint-base
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unevaluatedProperties: false
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properties:
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bus-width:
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enum: [ 16, 18, 24 ]
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port@1:
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$ref: /schemas/graph.yaml#/properties/port
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description:
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Video port for DSI output (panel or connector)
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required:
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- port@0
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- port@1
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required:
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- compatible
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- ports
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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dsi@2 {
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compatible = "solomon,ssd2825";
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reg = <2>;
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spi-max-frequency = <1000000>;
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spi-cpha;
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spi-cpol;
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reset-gpios = <&gpio 114 GPIO_ACTIVE_LOW>;
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dvdd-supply = <&vdd_1v2>;
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avdd-supply = <&vdd_1v2>;
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vddio-supply = <&vdd_1v8_io>;
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solomon,hs-zero-delay-ns = <300>;
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solomon,hs-prep-delay-ns = <65>;
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clocks = <&ssd2825_tx_clk>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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bridge_input: endpoint {
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remote-endpoint = <&dpi_output>;
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bus-width = <24>;
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};
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};
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port@1 {
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reg = <1>;
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bridge_output: endpoint {
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remote-endpoint = <&panel_input>;
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};
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};
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};
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};
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};
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