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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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7a108b930a
Add bindings for a secondary display controller present on certain Apple laptops. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Neal Gompa <neal@gompa.dev> Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250224-adpdrm-v8-1-cccf96710f0f@gmail.com Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
89 lines
2.1 KiB
YAML
89 lines
2.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/apple,h7-display-pipe.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple pre-DCP display controller
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maintainers:
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- Sasha Finkelstein <fnkl.kernel@gmail.com>
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description:
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A secondary display controller used to drive the "touchbar" on
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certain Apple laptops.
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properties:
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compatible:
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items:
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- enum:
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- apple,t8112-display-pipe
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- apple,t8103-display-pipe
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- const: apple,h7-display-pipe
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reg:
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items:
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- description: Primary register block, controls planes and blending
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- description:
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Contains other configuration registers like interrupt
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and FIFO control
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reg-names:
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items:
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- const: be
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- const: fe
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power-domains:
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description:
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Phandles to pmgr entries that are needed for this controller to turn on.
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Aside from that, their specific functions are unknown
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maxItems: 2
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interrupts:
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items:
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- description: Unknown function
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- description: Primary interrupt. Vsync events are reported via it
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interrupt-names:
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items:
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- const: be
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- const: fe
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iommus:
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maxItems: 1
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port:
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$ref: /schemas/graph.yaml#/properties/port
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description: Output port. Always connected to apple,h7-display-pipe-mipi
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required:
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- compatible
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- reg
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- interrupts
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- port
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/apple-aic.h>
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display-pipe@28200000 {
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compatible = "apple,t8103-display-pipe", "apple,h7-display-pipe";
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reg = <0x28200000 0xc000>,
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<0x28400000 0x4000>;
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reg-names = "be", "fe";
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power-domains = <&ps_dispdfr_fe>, <&ps_dispdfr_be>;
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interrupt-parent = <&aic>;
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interrupts = <AIC_IRQ 502 IRQ_TYPE_LEVEL_HIGH>,
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<AIC_IRQ 506 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "be", "fe";
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iommus = <&displaydfr_dart 0>;
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port {
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dfr_adp_out_mipi: endpoint {
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remote-endpoint = <&dfr_mipi_in_adp>;
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};
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};
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};
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...
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