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dt-bindings: display: samsung,exynos5433-mic: convert to dtschema

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Convert the Exynos5433 MIC bindings to DT schema format.

The conversion includes also updates to the bindings, matching the
current DTS and Linux driver: adding optional power-domains.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220208171823.226211-10-krzysztof.kozlowski@canonical.com
This commit is contained in:
Krzysztof Kozlowski 2022-02-08 18:18:22 +01:00 • committed by Rob Herring
parent a5032991e1
commit 4c5e180b83
2 changed files with 95 additions and 51 deletions
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51
Documentation/devicetree/bindings/display/exynos/exynos-mic.txt
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Device-Tree bindings for Samsung Exynos SoC mobile image compressor (MIC)
MIC (mobile image compressor) resides between decon and mipi dsi. Mipi dsi is
not capable to transfer high resoltuion frame data as decon can send. MIC
solves this problem by compressing the frame data by 1/2 before it is
transferred through mipi dsi. The compressed frame data must be uncompressed in
the panel PCB.
Required properties:
- compatible: value should be "samsung,exynos5433-mic".
- reg: physical base address and length of the MIC registers set and system
register of mic.
- clocks: must include clock specifiers corresponding to entries in the
clock-names property.
- clock-names: list of clock names sorted in the same order as the clocks
property. Must contain "pclk_mic0", "sclk_rgb_vclk_to_mic0".
- samsung,disp-syscon: the reference node for syscon for DISP block.
- ports: contains a port which is connected to decon node and dsi node.
address-cells and size-cells must 1 and 0, respectively.
- port: contains an endpoint node which is connected to the endpoint in the
decon node or dsi node. The reg value must be 0 and 1 respectively.
Example:
SoC specific DT entry:
mic: mic@13930000 {
compatible = "samsung,exynos5433-mic";
reg = <0x13930000 0x48>;
clocks = <&cmu_disp CLK_PCLK_MIC0>,
<&cmu_disp CLK_SCLK_RGB_VCLK_TO_MIC0>;
clock-names = "pclk_mic0", "sclk_rgb_vclk_to_mic0";
samsung,disp-syscon = <&syscon_disp>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
mic_to_decon: endpoint {
remote-endpoint = <&decon_to_mic>;
};
};
port@1 {
reg = <1>;
mic_to_dsi: endpoint {
remote-endpoint = <&dsi_to_mic>;
};
};
};
};

95
Documentation/devicetree/bindings/display/samsung/samsung,exynos5433-mic.yaml Normal file
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# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/samsung/samsung,exynos5433-mic.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Samsung Exynos5433 SoC Mobile Image Compressor (MIC)
maintainers:
- Inki Dae <inki.dae@samsung.com>
- Joonyoung Shim <jy0922.shim@samsung.com>
- Seung-Woo Kim <sw0312.kim@samsung.com>
- Kyungmin Park <kyungmin.park@samsung.com>
- Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
description: |
MIC (Mobile Image Compressor) resides between DECON and MIPI DSI. MIPI DSI is
not capable of transferring high resoltuion frame data as DECON can send. MIC
solves this problem by compressing the frame data by 1/2 before it is
transferred through MIPI DSI. The compressed frame data must be uncompressed
in the panel PCB.
properties:
compatible:
const: samsung,exynos5433-mic
clocks:
minItems: 2
maxItems: 2
clock-names:
items:
- const: pclk_mic0
- const: sclk_rgb_vclk_to_mic0
ports:
$ref: /schemas/graph.yaml#/properties/ports
description:
Contains a port which is connected to mic node.
power-domains:
maxItems: 1
reg:
maxItems: 1
samsung,disp-syscon:
$ref: /schemas/types.yaml#/definitions/phandle
description:
Phandle to DISP system controller interface.
required:
- compatible
- clocks
- clock-names
- ports
- reg
- samsung,disp-syscon
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/exynos5433.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
image-processor@13930000 {
compatible = "samsung,exynos5433-mic";
reg = <0x13930000 0x48>;
clocks = <&cmu_disp CLK_PCLK_MIC0>,
<&cmu_disp CLK_SCLK_RGB_VCLK_TO_MIC0>;
clock-names = "pclk_mic0",
"sclk_rgb_vclk_to_mic0";
power-domains = <&pd_disp>;
samsung,disp-syscon = <&syscon_disp>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
mic_to_decon: endpoint {
remote-endpoint = <&decon_to_mic>;
};
};
port@1 {
reg = <1>;
mic_to_dsi: endpoint {
remote-endpoint = <&dsi_to_mic>;
};
};
};
};