Re: [PATCH v2 1/2] dt-bindings: it6505: add properties to restrict output bandwidth

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 05/10/2022 08:19, allen.chen@xxxxxxxxxx wrote:
Hi

data-lanes is output configuration. Maybe it is not suitable to put data-lanes in input endpoint.
extcon doesn't have output endpoint, so I don't know where to put is better.

Ok it wasn't clear enough

Then rename the property to something more specific like:
ite,dp-output-data-lane-count

Use the same naming scheme for the other property:
ite,dp-output-max-pixel-clock-khz

Neil


-----Original Message-----
From: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Sent: Thursday, September 29, 2022 4:40 PM
To: Allen Chen (陳柏宇) <allen.chen@xxxxxxxxxx>
Cc: open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS <devicetree@xxxxxxxxxxxxxxx>; Kenneth Hung (洪家倫) <Kenneth.Hung@xxxxxxxxxx>; Jernej Skrabec <jernej.skrabec@xxxxxxxxx>; Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx>; Jau-Chih Tseng (曾昭智) <Jau-Chih.Tseng@xxxxxxxxxx>; David Airlie <airlied@xxxxxxxx>; open list:DRM DRIVERS <dri-devel@xxxxxxxxxxxxxxxxxxxxx>; Neil Armstrong <narmstrong@xxxxxxxxxxxx>; open list <linux-kernel@xxxxxxxxxxxxxxx>; Robert Foss <robert.foss@xxxxxxxxxx>; Pin-yen Lin <treapking@xxxxxxxxxxxx>; Hermes Wu (吳佳宏) <Hermes.Wu@xxxxxxxxxx>; Rob Herring <robh+dt@xxxxxxxxxx>; Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>; Andrzej Hajda <andrzej.hajda@xxxxxxxxx>; Jonas Karlman <jonas@xxxxxxxxx>
Subject: Re: [PATCH v2 1/2] dt-bindings: it6505: add properties to restrict output bandwidth

Hi,

On 29/09/2022 03:44, allen wrote:
From: allen chen <allen.chen@xxxxxxxxxx>

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

Signed-off-by: Pin-Yen Lin <treapking@xxxxxxxxxxxx>
Signed-off-by: Allen Chen <allen.chen@xxxxxxxxxx>
---
   .../devicetree/bindings/display/bridge/ite,it6505.yaml | 10 ++++++++++
   1 file changed, 10 insertions(+)

diff --git
a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
index 833d11b2303a..62b9f2192202 100644
--- a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml
@@ -52,6 +52,14 @@ properties:
       maxItems: 1
       description: extcon specifier for the Power Delivery
+ data-lanes:
+    maxItems: 1
+    description: restrict the dp output data-lanes with value of 1-4

Can't you use the data-lanes property in the first port endpoint ?

Look at Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml

+
+  max-pixel-clock-khz:
+    maxItems: 1
+    description: restrict max pixel clock

New vendor specific properties should have the ite, prefix.

+
     port:
       $ref: /schemas/graph.yaml#/properties/port
       description: A port node pointing to DPI host port node @@ -84,6
+92,8 @@ examples:
               pwr18-supply = <&it6505_pp18_reg>;
               reset-gpios = <&pio 179 1>;
               extcon = <&usbc_extcon>;
+            data-lanes = <2>;
+            max-pixel-clock-khz = <150000>;
port {
                   it6505_in: endpoint {

Thanks,
Neil




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux