From: Bo-Chen Chen <rex-bc.chen@mediatek.com>
To: <chunkuang.hu@kernel.org>, <p.zabel@pengutronix.de>,
<daniel@ffwll.ch>, <robh+dt@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>, <mripard@kernel.org>,
<tzimmermann@suse.de>, <matthias.bgg@gmail.com>, <deller@gmx.de>,
<airlied@linux.ie>
Cc: devicetree@vger.kernel.org, linux-fbdev@vger.kernel.org,
granquet@baylibre.com, jitao.shi@mediatek.com,
liangxu.xu@mediatek.com, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, msp@baylibre.com,
Project_Global_Chrome_Upstream_Group@mediatek.com,
Bo-Chen Chen <rex-bc.chen@mediatek.com>,
linux-mediatek@lists.infradead.org, wenst@chromium.org,
linux-arm-kernel@lists.infradead.org,
angelogioacchino.delregno@collabora.com
Subject: [PATCH v15 01/11] dt-bindings: mediatek,dp: Add Display Port binding
Date: Wed, 27 Jul 2022 12:50:25 +0800 [thread overview]
Message-ID: <20220727045035.32225-2-rex-bc.chen@mediatek.com> (raw)
In-Reply-To: <20220727045035.32225-1-rex-bc.chen@mediatek.com>
From: Markus Schneider-Pargmann <msp@baylibre.com>
This controller is present on several mediatek hardware. Currently
mt8195 and mt8395 have this controller without a functional difference,
so only one compatible field is added.
The controller can have two forms, as a normal display port and as an
embedded display port.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
---
.../display/mediatek/mediatek,dp.yaml | 117 ++++++++++++++++++
1 file changed, 117 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
new file mode 100644
index 000000000000..fd68c6c08df3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,dp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Display Port Controller
+
+maintainers:
+ - Chun-Kuang Hu <chunkuang.hu@kernel.org>
+ - Jitao shi <jitao.shi@mediatek.com>
+
+description: |
+ Device tree bindings for the MediaTek display port TX (DP) and
+ embedded display port TX (eDP) controller present on some MediaTek SoCs.
+ We just need to enable the power domain of DP. The clock of DP is
+ generated by itself and we are not using other PLL to generate clocks.
+ MediaTek DP and eDP are different hardwares and there are some features
+ which are not supported for eDP. For example, audio is not supported for
+ eDP. Therefore, we need to use two different compatibles to describe them.
+
+properties:
+ compatible:
+ enum:
+ - mediatek,mt8195-dp-tx
+ - mediatek,mt8195-edp-tx
+
+ reg:
+ maxItems: 1
+
+ nvmem-cells:
+ maxItems: 1
+ description: efuse data for display port calibration
+
+ nvmem-cell-names:
+ const: dp_calibration_data
+
+ power-domains:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/properties/port
+ description: Input endpoint of the controller, usually dp_intf
+
+ port@1:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: Output endpoint of the controller
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+ properties:
+ data-lanes:
+ description: |
+ number of lanes supported by the hardware.
+ The possible values:
+ 0 - For 1 lane enabled in IP.
+ 0 1 - For 2 lanes enabled in IP.
+ 0 1 2 3 - For 4 lanes enabled in IP.
+ minItems: 1
+ maxItems: 4
+ required:
+ - data-lanes
+
+ required:
+ - port@0
+ - port@1
+
+ max-linkrate-mhz:
+ enum: [ 1620, 2700, 5400, 8100 ]
+ description: maximum link rate supported by the hardware.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - ports
+ - max-linkrate-mhz
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/mt8195-power.h>
+ dp_tx@1c600000 {
+ compatible = "mediatek,mt8195-dp-tx";
+ reg = <0x1c600000 0x8000>;
+ power-domains = <&spm MT8195_POWER_DOMAIN_DP_TX>;
+ interrupts = <GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH 0>;
+ max-linkrate-mhz = <8100>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ dptx_in: endpoint {
+ remote-endpoint = <&dp_intf0_out>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ dptx_out: endpoint {
+ data-lanes = <0 1 2 3>;
+ };
+ };
+ };
+ };
--
2.18.0
next prev parent reply other threads:[~2022-07-27 4:52 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-27 4:50 [PATCH v15 00/11] drm/mediatek: Add MT8195 DisplayPort driver Bo-Chen Chen
2022-07-27 4:50 ` Bo-Chen Chen [this message]
2022-07-27 7:23 ` [PATCH v15 01/11] dt-bindings: mediatek,dp: Add Display Port binding Krzysztof Kozlowski
2022-07-28 9:39 ` Rex-BC Chen
2022-07-27 4:50 ` [PATCH v15 02/11] drm/edid: Convert cea_sad helper struct to kernelDoc Bo-Chen Chen
2022-07-27 4:50 ` [PATCH v15 03/11] drm/edid: Add cea_sad helpers for freq/length Bo-Chen Chen
2022-07-27 9:34 ` AngeloGioacchino Del Regno
2022-08-02 14:11 ` Jani Nikula
2022-08-05 6:54 ` Rex-BC Chen
2022-08-05 7:54 ` Jani Nikula
2022-07-27 4:50 ` [PATCH v15 04/11] video/hdmi: Add audio_infoframe packing for DP Bo-Chen Chen
2022-07-27 9:35 ` AngeloGioacchino Del Regno
2022-07-27 4:50 ` [PATCH v15 05/11] drm/mediatek: Add MT8195 Embedded DisplayPort driver Bo-Chen Chen
2022-07-27 9:36 ` AngeloGioacchino Del Regno
2022-08-02 2:56 ` CK Hu
2022-08-02 5:09 ` CK Hu
2022-08-05 8:22 ` Rex-BC Chen
2022-08-02 7:57 ` CK Hu
2022-07-27 4:50 ` [PATCH v15 06/11] drm/mediatek: Add MT8195 External DisplayPort support Bo-Chen Chen
2022-07-27 9:38 ` AngeloGioacchino Del Regno
2022-08-02 2:37 ` CK Hu
2022-08-03 5:47 ` Rex-BC Chen
2022-07-27 4:50 ` [PATCH v15 07/11] drm/mediatek: Add retry to prevent misjudgment for sink devices Bo-Chen Chen
2022-07-27 9:40 ` AngeloGioacchino Del Regno
2022-07-28 9:40 ` Rex-BC Chen
2022-08-05 7:10 ` Rex-BC Chen
2022-07-27 4:50 ` [PATCH v15 08/11] drm/mediatek: add hpd debounce Bo-Chen Chen
2022-07-27 4:50 ` [PATCH v15 09/11] drm/mediatek: set monitor to DP_SET_POWER_D3 to avoid garbage Bo-Chen Chen
2022-07-27 4:50 ` [PATCH v15 10/11] drm/mediatek: DP audio support for MT8195 Bo-Chen Chen
2022-07-27 4:50 ` [PATCH v15 11/11] drm/mediatek: Use cached audio config when changing resolution Bo-Chen Chen
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