linux-kernel - [v1 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Document use-aux-backlight

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Date:   Wed, 14 Apr 2021 22:09:49 +0530
From:   Rajeev Nandan <rajeevny@...eaurora.org>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Rajeev Nandan <rajeevny@...eaurora.org>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, mkrishn@...eaurora.org,
        kalyan_t@...eaurora.org, hoegsberg@...omium.org,
        abhinavk@...eaurora.org, seanpaul@...omium.org
Subject: [v1 2/3] dt-bindings: drm/bridge: ti-sn65dsi86: Document use-aux-backlight

If the panel connected to the bridge supports backlight control
using DPCD registers on the DisplayPort aux channel, setting
"use-aux-backlight" property in the bridge node will enable the
registration of a DP aux backlight device from the bridge driver.

Signed-off-by: Rajeev Nandan <rajeevny@...eaurora.org>
---
 .../devicetree/bindings/display/bridge/ti,sn65dsi86.yaml          | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
index 26932d2..c8d8c00 100644
--- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
@@ -58,6 +58,12 @@ properties:
   clock-names:
     const: refclk
 
+  use-aux-backlight:
+    type: boolean
+    description:
+      The panel backlight to be controlled using DPCD registers on
+      the DP aux channel.
+
   gpio-controller: true
   '#gpio-cells':
     const: 2
@@ -188,6 +194,8 @@ examples:
 
         no-hpd;
 
+        use-aux-backlight;
+
         ports {
           #address-cells = <1>;
           #size-cells = <0>;
-- 
2.7.4