On Thu, May 21, 2026 at 10:46:06PM +0800, Jun Nie wrote:
> Add support for the dual-panel system found in the virtual reality device.
> This system consists of two physical 2160x2160 panels, each connected via
> a MIPI DSI interface. The backlight is managed through DSI link.
>
> Signed-off-by: Jun Nie <[email protected]>
> ---
> .../bindings/display/panel/synaptics,r63455.yaml | 125
> +++++++++++++++++++++
> 1 file changed, 125 insertions(+)
>
> diff --git
> a/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml
> b/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml
> new file mode 100644
> index 0000000000000..a94b355ed9557
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/synaptics,r63455.yaml
> @@ -0,0 +1,125 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/synaptics,r63455.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Synaptics R63455 based dual 2160x2160 MIPI-DSI Panel
> +
> +maintainers:
> + - Jun Nie <[email protected]>
> +
> +description:
> + Synaptics R63455 is a Virtual Reality Display Driver and VR Bridge, used in
> + pair in Headset devices. The Virtual Reality Display complex is composed of
> + two strictly identical display panels, each driven by its own DSI interface
> + but forms a single virtual display for the human eye perception and thus
> + requires a strict synchronization of the two display panel content update.
> +
> +allOf:
> + - $ref: panel-common.yaml#
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - sharp,ls026b3sa06
> + - boe,vs026c4m-n52-6000
> + - const: synaptics,r63455
> +
> + reset-gpios:
> + maxItems: 2
> + description: 2 reset pins for 2 physical panels
> +
> + left-pos-supply:
> + description: Positive 5.7V supply for left panel
So, is the R63455 driving both panels or are there two panels, each
having R63455 controller? What if somebody gets a single Sharp panel and
wants to use it in their device? How will it match these bindings?
> +
> + right-pos-supply:
> + description: Positive 5.7V supply for right panel
> +
> + left-neg-supply:
> + description: Negative 5.7V supply for left panel
> +
> + right-neg-supply:
> + description: Negative 5.7V supply for right panel
> +
> + left-backlight-supply:
> + description: Backlight 21V supply for left panel
> +
> + right-backlight-supply:
> + description: Backlight 21V supply for right panel
> +
> + vdda-supply:
> + description: core 1.8V supply for panels
> +
> + ports: $ref: /schemas/graph.yaml#/properties/ports
> +
> +required:
> + - compatible
> + - reset-gpios
> + - left-pos-supply
> + - left-neg-supply
> + - right-pos-supply
> + - right-neg-supply
> + - left-backlight-supply
> + - right-backlight-supply
> + - vdda-supply
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + &mdss_dsi0 {
Please drop the MDSS specifics, there should be one (or two) DSI busses,
driving your panels. The rests are details which are not necessary for
the example.
> + vdda-supply = <&vreg_l3i_1p2>;
> + status = "okay";
> +
> + qcom,dual-dsi-mode;
> + qcom,master-dsi;
> +
> + panel: panel@0 {
> + compatible = "sharp,ls026b3sa06", "synaptics,r63455";
> + reg = <0>;
> +
> + reset-gpios = <&pm8550_gpios 3 GPIO_ACTIVE_HIGH>,
> + <&pm8550_gpios 11 GPIO_ACTIVE_HIGH>;
> +
> + left-pos-supply = <&vpos_left>;
> + left-neg-supply = <&vneg_left>;
> + right-pos-supply = <&vpos_right>;
> + right-neg-supply = <&vneg_right>;
> + left-backlight-supply = <&backlight_left>;
> + right-backlight-supply = <&backlight_right>;
> +
> + vdda-supply = <&vreg_l12b_1p8>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port@0 {
> + reg = <0>;
> + panel0_in: endpoint {
> + remote-endpoint = <&mdss_dsi0_out>;
What is mdss_dsi0_out?
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + panel1_in: endpoint {
> + remote-endpoint = <&mdss_dsi1_out>;
> + };
> + };
> + };
> + };
> +
> + &mdss_dsi0_out {
> + remote-endpoint = <&panel0_in>;
> + data-lanes = <0 1 2>;
> + };
> +
> + &mdss_dsi1_out {
> + remote-endpoint = <&panel1_in>;
> + data-lanes = <0 1 2>;
> + };
> +...
>
> --
> 2.43.0
>
--
With best wishes
Dmitry
