linux-kernel - [PATCH v3 1/2] dt-bindings: it6505: add properties to restrict output bandwidth

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Date:   Thu, 6 Oct 2022 10:04:43 +0800
From:   allen <allen.chen@....com.tw>
To:     unlisted-recipients:; (no To-header on input)
CC:     Allen Chen <allen.chen@....com.tw>,
        Jau-Chih Tseng <Jau-Chih.Tseng@....com.tw>,
        Kenneth Hung <Kenneth.Hung@....com.tw>,
        Hermes Wu <Hermes.Wu@....com.tw>,
        Pin-yen Lin <treapking@...omium.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 1/2] dt-bindings: it6505: add properties to restrict output bandwidth

From: allen chen <allen.chen@....com.tw>

Add properties to restrict dp output data-lanes and clock.

Signed-off-by: Pin-Yen Lin <treapking@...omium.org>
Signed-off-by: Allen Chen <allen.chen@....com.tw>
---
 .../bindings/display/bridge/ite,it6505.yaml          | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
index 833d11b2303a..f5482a614d05 100644
--- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
@@ -52,6 +52,16 @@ properties:
     maxItems: 1
     description: extcon specifier for the Power Delivery
 
+  ite,dp-output-data-lane-count:
+    description: restrict the dp output data-lanes with value of 1-4
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 1, 2, 4 ]
+
+  ite,dp-output-max-pixel-clock-mhz:
+    description: restrict max pixel clock
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 150
+
   port:
     $ref: /schemas/graph.yaml#/properties/port
     description: A port node pointing to DPI host port node
@@ -84,6 +94,8 @@ examples:
             pwr18-supply = <&it6505_pp18_reg>;
             reset-gpios = <&pio 179 1>;
             extcon = <&usbc_extcon>;
+            ite,dp-output-data-lane-count = <2>;
+            ite,dp-output-max-pixel-clock-mhz = <150>;
 
             port {
                 it6505_in: endpoint {
-- 
2.25.1