linux-kernel - [PATCH v3 01/14] dt-bindings: phy: Convert Cadence MHDP PHY bindings to YAML.

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Message-ID: <1579689918-7181-2-git-send-email-yamonkar@cadence.com>
Date:   Wed, 22 Jan 2020 11:45:05 +0100
From:   Yuti Amonkar <yamonkar@...ence.com>
To:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <kishon@...com>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <maxime@...no.tech>
CC:     <jsarha@...com>, <tomi.valkeinen@...com>, <praneeth@...com>,
        <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>
Subject: [PATCH v3 01/14] dt-bindings: phy: Convert Cadence MHDP PHY bindings to YAML.

- Convert the MHDP PHY devicetree bindings to yaml schemas.
- Rename DP PHY to have generic Torrent PHY nomrnclature.
- Add Torrent PHY reference clock bindings.
- Rename compatible string from "cdns,dp-phy" to "cdns,torrent-phy".
  This will not affect ABI as the driver has never been functional,
  and therefore do not exist in any active use case

Signed-off-by: Yuti Amonkar <yamonkar@...ence.com>
---
 .../devicetree/bindings/phy/phy-cadence-dp.txt     | 30 --------
 .../bindings/phy/phy-cadence-torrent.yaml          | 82 ++++++++++++++++++++++
 2 files changed, 82 insertions(+), 30 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/phy/phy-cadence-dp.txt
 create mode 100644 Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml

diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-dp.txt b/Documentation/devicetree/bindings/phy/phy-cadence-dp.txt
deleted file mode 100644
index 7f49fd54e..0000000
--- a/Documentation/devicetree/bindings/phy/phy-cadence-dp.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-Cadence MHDP DisplayPort SD0801 PHY binding
-===========================================
-
-This binding describes the Cadence SD0801 PHY hardware included with
-the Cadence MHDP DisplayPort controller.
-
--------------------------------------------------------------------------------
-Required properties (controller (parent) node):
-- compatible	: Should be "cdns,dp-phy"
-- reg		: Defines the following sets of registers in the parent
-		  mhdp device:
-			- Offset of the DPTX PHY configuration registers
-			- Offset of the SD0801 PHY configuration registers
-- #phy-cells	: from the generic PHY bindings, must be 0.
-
-Optional properties:
-- num_lanes	: Number of DisplayPort lanes to use (1, 2 or 4)
-- max_bit_rate	: Maximum DisplayPort link bit rate to use, in Mbps (2160,
-		  2430, 2700, 3240, 4320, 5400 or 8100)
--------------------------------------------------------------------------------
-
-Example:
-	dp_phy: phy@...b030a00 {
-		compatible = "cdns,dp-phy";
-		reg = <0xf0 0xfb030a00 0x0 0x00000040>,
-		      <0xf0 0xfb500000 0x0 0x00100000>;
-		num_lanes = <4>;
-		max_bit_rate = <8100>;
-		#phy-cells = <0>;
-	};
diff --git a/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
new file mode 100644
index 0000000..eb633d7
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-cadence-torrent.yaml
@@ -0,0 +1,82 @@
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/phy/phy-cadence-torrent.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Cadence Torrent SD0801 PHY binding for DisplayPort
+
+description:
+  This binding describes the Cadence SD0801 PHY (also known as Torrent PHY)
+  hardware included with the Cadence MHDP DisplayPort controller.
+
+maintainers:
+  - Swapnil Jakhade <sjakhade@...ence.com>
+  - Yuti Amonkar <yamonkar@...ence.com>
+
+properties:
+  compatible:
+    const: cdns,torrent-phy
+
+  clocks:
+    maxItems: 1
+    description:
+      PHY reference clock. Must contain an entry in clock-names.
+
+  clock-names:
+    const: refclk
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: Offset of the Torrent PHY configuration registers.
+      - description: Offset of the DPTX PHY configuration registers.
+
+  reg-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: torrent_phy
+      - const: dptx_phy
+
+  "#phy-cells":
+    const: 0
+
+  num_lanes:
+    description:
+      Number of DisplayPort lanes.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [1, 2, 4]
+
+  max_bit_rate:
+    description:
+      Maximum DisplayPort link bit rate to use, in Mbps
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [2160, 2430, 2700, 3240, 4320, 5400, 8100]
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - reg
+  - reg-names
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    dp_phy: phy@...b500000 {
+          compatible = "cdns,torrent-phy";
+          reg = <0xf0 0xfb500000 0x0 0x00100000>,
+                <0xf0 0xfb030a00 0x0 0x00000040>;
+          reg-names = "torrent_phy", "dptx_phy";
+          num_lanes = <4>;
+          max_bit_rate = <8100>;
+          #phy-cells = <0>;
+          clocks = <&ref_clk>;
+          clock-names = "refclk";
+    };
+...
-- 
2.4.5