linux-kernel - [PATCH 8/9] media: dt-bindings: Add Intel Displayport RX IP

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Message-ID: <20240212131323.2162161-9-panikiel@google.com>
Date: Mon, 12 Feb 2024 13:13:22 +0000
From: "Paweł Anikiel" <panikiel@...gle.com>
To: airlied@...il.com, akpm@...ux-foundation.org, conor+dt@...nel.org, 
	daniel@...ll.ch, dinguyen@...nel.org, hverkuil-cisco@...all.nl, 
	krzysztof.kozlowski+dt@...aro.org, maarten.lankhorst@...ux.intel.com, 
	mchehab@...nel.org, mripard@...nel.org, robh+dt@...nel.org, 
	tzimmermann@...e.de
Cc: devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, 
	chromeos-krk-upstreaming@...gle.com, ribalda@...omium.org, 
	"Paweł Anikiel" <panikiel@...gle.com>
Subject: [PATCH 8/9] media: dt-bindings: Add Intel Displayport RX IP

The Intel Displayport RX IP is a part of the DisplayPort Intel FPGA IP
Core. It implements a DisplayPort 1.4 receiver capable of HBR3 video
capture and Multi-Stream Transport. The user guide can be found here:

https://www.intel.com/programmable/technical-pdfs/683273.pdf

Signed-off-by: Paweł Anikiel <panikiel@...gle.com>
---
 .../devicetree/bindings/media/intel,dprx.yaml | 125 ++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/intel,dprx.yaml

diff --git a/Documentation/devicetree/bindings/media/intel,dprx.yaml b/Documentation/devicetree/bindings/media/intel,dprx.yaml
new file mode 100644
index 000000000000..3ed37e0a4a94
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/intel,dprx.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/intel,dprx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel DisplayPort RX IP
+
+maintainers:
+  - Paweł Anikiel <panikiel@...gle.com>
+
+properties:
+  compatible:
+    const: intel,dprx
+
+  reg:
+    items:
+      - description: core registers
+      - description: irq registers
+
+  interrupts:
+    maxItems: 1
+
+  intel,has-mst:
+    type: boolean
+    description: The device supports Multi-Stream Transport
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: SST main link
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: MST virtual channel 0 or SST main link
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: MST virtual channel 1
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: MST virtual channel 2
+
+      port@3:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: MST virtual channel 3
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+allOf:
+  - if:
+      required:
+        - intel,has-mst
+    then:
+      required:
+        - ports
+    else:
+      required:
+        - port
+
+additionalProperties: false
+
+examples:
+  - |
+    dprx@...62000 {
+        compatible = "intel,dprx";
+        reg = <0xc0062000 0x800>,
+              <0xc0060f80 0x10>;
+        interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
+        intel,has-mst;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                dprx_mst_0: endpoint {
+                    remote-endpoint = <&fb_mst0_0>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+                dprx_mst_1: endpoint {
+                    remote-endpoint = <&fb_mst1_0>;
+                };
+            };
+
+            port@2 {
+                reg = <2>;
+                dprx_mst_2: endpoint {
+                    remote-endpoint = <&fb_mst2_0>;
+                };
+            };
+
+            port@3 {
+                reg = <3>;
+                dprx_mst_3: endpoint {
+                    remote-endpoint = <&fb_mst3_0>;
+                };
+            };
+        };
+    };
+
+  - |
+    dprx@...64000 {
+        compatible = "intel,dprx";
+        reg = <0xc0064000 0x800>,
+              <0xc0060fe0 0x10>;
+        interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
+
+        port {
+            dprx_sst_0: endpoint {
+                remote-endpoint = <&fb_sst_0>;
+            };
+        };
+    };
-- 
2.43.0.687.g38aa6559b0-goog