linux-kernel - [PATCH v2 4/5] dt-bindings: drm/bridge Document Cadence MHDP DPI/DP bridge bindings

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Message-ID: <1532430824-23477-5-git-send-email-dkos@cadence.com>
Date:   Tue, 24 Jul 2018 12:13:35 +0100
From:   Damian Kos <dkos@...ence.com>
To:     David Airlie <airlied@...ux.ie>, Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Gustavo Padovan <gustavo@...ovan.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Sean Paul <seanpaul@...omium.org>,
        Sandy Huang <hjc@...k-chips.com>,
        Heiko Stübner <heiko@...ech.de>,
        Damian Kos <dkos@...ence.com>,
        Quentin Schulz <quentin.schulz@...tlin.com>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-rockchip@...ts.infradead.org>
CC:     <pgaj@...ence.com>, <ltyrala@...ence.com>, <stelford@...ence.com>
Subject: [PATCH v2 4/5] dt-bindings: drm/bridge Document Cadence MHDP DPI/DP bridge bindings

From: Quentin Schulz <quentin.schulz@...tlin.com>

Signed-off-by: Damian Kos <dkos@...ence.com>
---
 .../bindings/display/bridge/cdns,mhdp.txt     | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt

diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
new file mode 100644
index 000000000000..dc7be7590048
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
@@ -0,0 +1,43 @@
+Cadence MHDP bridge
+==========================
+
+The Cadence MHDP bridge is a DPI to DP bridge.
+
+Required properties:
+- compatible: should be "cdns,mhdp8546",
+- reg: physical base address and length of the controller's registers,
+- clocks: DP bridge clock, it's used by the IP to know how to translate
+	a number of clock cycles into a time (which is used to comply
+	with DP standard timings and delays),
+
+Required subnodes:
+- ports: Ports as described in Documentation/devictree/bindings/graph.txt
+	Port 0 - input port representing the VGA bridge input
+	Port 1 - output port representing the VGA bridge output
+
+Example:
+
+	mhdp: dp-bridge@...b000000 {
+		compatible = "cdns,mhdp8546";
+		reg = <0xf0 0xfb000000 0x0 0x1000000>;
+		clocks = <&mhdp_clock>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				vga_bridge_input: endpoint {
+					remote-endpoint = <&xxx_dpi_output>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				vga_bridge_output: endpoint {
+					remote-endpoint = <&xxx_vga_connector_input>;
+				};
+			};
+		};
+	};
-- 
2.17.1