linux-kernel - [PATCH v4 3/4] dt-bindings: display: imx: add bindings for DCSS

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Message-Id: <20200306124930.20978-4-laurentiu.palcu@oss.nxp.com>
Date:   Fri,  6 Mar 2020 14:49:27 +0200
From:   Laurentiu Palcu <laurentiu.palcu@....nxp.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     l.stach@...gutronix.de, lukas@...mn.com, agx@...xcpu.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        laurentiu.palcu@....nxp.com
Subject: [PATCH v4 3/4] dt-bindings: display: imx: add bindings for DCSS

From: Laurentiu Palcu <laurentiu.palcu@....com>

Add bindings for iMX8MQ Display Controller Subsystem.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@....com>
---
 .../bindings/display/imx/nxp,imx8mq-dcss.yaml | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml b/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
new file mode 100644
index 000000000000..fde6ec8cb0c3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/nxp,imx8mq-dcss.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 NXP
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/imx/nxp,imx8mq-dcss.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: iMX8MQ Display Controller Subsystem (DCSS)
+
+maintainers:
+  - Laurentiu Palcu <laurentiu.palcu@....com>
+
+description:
+
+  The DCSS (display controller sub system) is used to source up to three
+  display buffers, compose them, and drive a display using HDMI 2.0a(with HDCP
+  2.2) or MIPI-DSI. The DCSS is intended to support up to 4kp60 displays. HDR10
+  image processing capabilities are included to provide a solution capable of
+  driving next generation high dynamic range displays.
+
+properties:
+  compatible:
+    const: nxp,imx8mq-dcss
+
+  reg:
+    maxItems: 2
+
+  interrupts:
+    maxItems: 3
+    items:
+      - description: Context loader completion and error interrupt
+      - description: DTG interrupt used to signal context loader trigger time
+      - description: DTG interrupt for Vblank
+
+  interrupt-names:
+    maxItems: 3
+    items:
+      - const: ctxld
+      - const: ctxld_kick
+      - const: vblank
+
+  clocks:
+    maxItems: 5
+    items:
+      - description: Display APB clock for all peripheral PIO access interfaces
+      - description: Display AXI clock needed by DPR, Scaler, RTRAM_CTRL
+      - description: RTRAM clock
+      - description: Pixel clock, can be driver either by HDMI phy clock or MIPI
+      - description: DTRC clock, needed by video decompressor
+
+  clock-names:
+    items:
+      - const: apb
+      - const: axi
+      - const: rtrm
+      - const: pix
+      - const: dtrc
+
+  port:
+    type: object
+    description:
+      A port node pointing to the input port of a HDMI/DP or MIPI display bridge.
+
+examples:
+  - |
+    dcss: display-controller@...00000 {
+        compatible = "nxp,imx8mq-dcss";
+        reg = <0x32e00000 0x2d000>, <0x32e2f000 0x1000>;
+        interrupts = <6>, <8>, <9>;
+        interrupt-names = "ctxld", "ctxld_kick", "vblank";
+        interrupt-parent = <&irqsteer>;
+        clocks = <&clk 248>, <&clk 247>, <&clk 249>,
+                 <&clk 254>,<&clk 122>;
+        clock-names = "apb", "axi", "rtrm", "pix", "dtrc";
+        assigned-clocks = <&clk 107>, <&clk 109>, <&clk 266>;
+        assigned-clock-parents = <&clk 78>, <&clk 78>, <&clk 3>;
+        assigned-clock-rates = <800000000>,
+                               <400000000>;
+        port {
+            dcss_out: endpoint {
+                remote-endpoint = <&hdmi_in>;
+            };
+        };
+    };
+
-- 
2.17.1