linux-kernel - [PATCH v2 1/3] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings in yaml format

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Date:   Mon, 23 Dec 2019 16:16:40 +0100
From:   Yuti Amonkar <yamonkar@...ence.com>
To:     <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <devicetree@...r.kernel.org>, <robh+dt@...nel.org>,
        <maxime@...no.tech>, <airlied@...ux.ie>, <daniel@...ll.ch>,
        <mark.rutland@....com>, <a.hajda@...sung.com>,
        <narmstrong@...libre.com>, <Laurent.pinchart@...asonboard.com>,
        <jonas@...boo.se>, <jernej.skrabec@...l.net>
CC:     <praneeth@...com>, <jsarha@...com>, <tomi.valkeinen@...com>,
        <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>
Subject: [PATCH v2 1/3] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings in yaml format

Document the bindings used for the Cadence MHDP DPI/DP bridge in
yaml format.

Signed-off-by: Yuti Amonkar <yamonkar@...ence.com>
---
 .../bindings/display/bridge/cdns,mhdp.yaml         | 109 +++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.yaml b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.yaml
new file mode 100644
index 0000000..aed6224
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.yaml
@@ -0,0 +1,109 @@
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/display/bridge/cdns,mhdp.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Cadence MHDP bridge
+
+maintainers:
+  - Swapnil Jakhade <sjakhade@...ence.com>
+  - Yuti Amonkar <yamonkar@...ence.com>
+
+properties:
+  compatible:
+    enum:
+      - cdns,mhdp8546
+      - ti,j721e-mhdp8546
+
+  clocks:
+    maxItems: 1
+    description:
+      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).
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description:
+          Register block of mhdptx apb registers upto PHY mapped area(AUX_CONFIG_P).
+          The AUX and PMA registers are mapped to associated phy driver.
+      - description:
+          Register block for DSS_EDP0_INTG_CFG_VP registers in case of TI J7 SoCs.
+
+  reg-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: mhdptx
+      - const: j721e-intg
+
+  phys:
+    description: see the Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
+
+  phy-names:
+    const: dpphy
+
+  ports:
+    type: object
+    description:
+      Ports as described in Documentation/devicetree/bindings/graph.txt
+    properties:
+       '#address-cells':
+         const: 1
+       '#size-cells':
+         const: 0
+       port@0:
+         description:
+           input port representing the DP bridge input
+
+       port@1:
+         description:
+           output port representing the DP bridge output
+    required:
+      - port@0
+      - port@1
+      - '#address-cells'
+      - '#size-cells'
+
+required:
+  - compatible
+  - clocks
+  - reg
+  - phys
+  - phy-names
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    mhdp: dp-bridge@...b000000 {
+        compatible = "cdns,mhdp8546";
+        reg = <0xf0 0xfb000000 0x0 0x1000000>,
+              <0xf0 0xfc000000 0x0 0x2000000>;
+        clocks = <&mhdp_clock>;
+        phys = <&dp_phy>;
+        phy-names = "dpphy";
+
+        ports {
+              #address-cells = <1>;
+              #size-cells = <0>;
+
+              port@0 {
+                     reg = <0>;
+                     dp_bridge_input: endpoint {
+                                    remote-endpoint = <&xxx_dpi_output>;
+                     };
+              };
+
+              port@1 {
+                     reg = <1>;
+                     dp_bridge_output: endpoint {
+                                     remote-endpoint = <&xxx_dp_connector_input>;
+                     };
+              };
+      };
+    };
+...
-- 
2.7.4