From: Peter Rosin <peda@lysator.liu.se>
To: linux-kernel@vger.kernel.org
Cc: Peter Rosin <peda@axentia.se>, David Airlie <airlied@linux.ie>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Archit Taneja <architt@codeaurora.org>,
Andrzej Hajda <a.hajda@samsung.com>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org
Subject: [PATCH v2 1/3] dt-bindings: display: bridge: fork out ti,ds90c185 from lvds-transmitter
Date: Wed, 19 Dec 2018 14:04:47 +0100 [thread overview]
Message-ID: <20181219130449.31641-2-peda@lysator.liu.se> (raw)
In-Reply-To: <20181219130449.31641-1-peda@lysator.liu.se>
From: Peter Rosin <peda@axentia.se>
DS90C185 has a shutdown pin which does not fit in the lvds-transmitter
binding, which is meant to be generic.
The sister chip DS90C187 is similar to DS90C185, describe it here as well.
Signed-off-by: Peter Rosin <peda@axentia.se>
---
.../bindings/display/bridge/lvds-transmitter.txt | 8 +---
.../bindings/display/bridge/ti,ds90c185.txt | 55 ++++++++++++++++++++++
2 files changed, 56 insertions(+), 7 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt b/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
index 50220190c203..fd39ad34c383 100644
--- a/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
+++ b/Documentation/devicetree/bindings/display/bridge/lvds-transmitter.txt
@@ -22,13 +22,7 @@ among others.
Required properties:
-- compatible: Must be one or more of the following
- - "ti,ds90c185" for the TI DS90C185 FPD-Link Serializer
- - "lvds-encoder" for a generic LVDS encoder device
-
- When compatible with the generic version, nodes must list the
- device-specific version corresponding to the device first
- followed by the generic version.
+- compatible: Must be "lvds-encoder"
Required nodes:
diff --git a/Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt b/Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt
new file mode 100644
index 000000000000..a13e778503e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ti,ds90c185.txt
@@ -0,0 +1,55 @@
+Texas Instruments FPD-Link (LVDS) Serializer
+--------------------------------------------
+
+The DS90C185 and DS90C187 are low-power serializers for portable
+battery-powered applications that reduces the size of the RGB
+interface between the host GPU and the display.
+
+Required properties:
+
+- compatible: Should be
+ "ti,ds90c185", "lvds-encoder" for the TI DS90C185 FPD-Link Serializer
+ "ti,ds90c187", "lvds-encoder" for the TI DS90C187 FPD-Link Serializer
+
+Optional properties:
+
+- pwdn-gpios: Power down control GPIO (the PDB pin, active-low)
+
+Required nodes:
+
+The devices have two video ports. Their connections are modeled using the OF
+graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+- Video port 0 for parallel input
+- Video port 1 for LVDS output
+
+
+Example
+-------
+
+lvds-encoder {
+ compatible = "ti,ds90c185", "lvds-encoder";
+
+ pwdn-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ lvds_enc_in: endpoint {
+ remote-endpoint = <&lcdc_out_rgb>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ lvds_enc_out: endpoint {
+ remote-endpoint = <&lvds_panel_in>;
+ };
+ };
+ };
+};
--
2.11.0
next prev parent reply other threads:[~2018-12-19 13:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-19 13:04 [PATCH v2 0/3] drm/bridge: various small lvds-encoder things Peter Rosin
2018-12-19 13:04 ` Peter Rosin [this message]
2018-12-27 21:27 ` [PATCH v2 1/3] dt-bindings: display: bridge: fork out ti,ds90c185 from lvds-transmitter Rob Herring
2018-12-27 22:53 ` Peter Rosin
2018-12-28 17:40 ` Rob Herring
2018-12-19 13:04 ` [PATCH v2 2/3] dt-bindings: display: bridge: lvds-transmitter: cleanup example Peter Rosin
2018-12-27 21:27 ` Rob Herring
2018-12-19 13:04 ` [PATCH v2 3/3] drm/bridge: add pwdn-gpios support to the lvds-encoder Peter Rosin
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