linux-kernel - [PATCH v1] dt-bindings: ufshc: cdns: convert bindings for Cadence UFS host controller

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Message-ID: <20210826185135.26599-2-dkangude@cadence.com>
Date:   Thu, 26 Aug 2021 20:51:35 +0200
From:   Dhananjay Kangude <dkangude@...ence.com>
To:     <devicetree@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>, <mparab@...ence.com>,
        <robh+dt@...nel.org>, <dkangude@...ence.com>, <vigneshr@...com>,
        <kishon@...com>
Subject: [PATCH v1] dt-bindings: ufshc: cdns: convert bindings for Cadence UFS host controller

Converted bindings into yaml format for Cadence UFS host controller

Signed-off-by: Dhananjay Kangude <dkangude@...ence.com>
---
 .../devicetree/bindings/ufs/cdns,ufshc.txt         |   32 --------
 .../devicetree/bindings/ufs/cdns,ufshc.yaml        |   80 ++++++++++++++++++++
 2 files changed, 80 insertions(+), 32 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
 create mode 100644 Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml

diff --git a/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt b/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
deleted file mode 100644
index 02347b0..0000000
--- a/Documentation/devicetree/bindings/ufs/cdns,ufshc.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-* Cadence Universal Flash Storage (UFS) Controller
-
-UFS nodes are defined to describe on-chip UFS host controllers.
-Each UFS controller instance should have its own node.
-Please see the ufshcd-pltfrm.txt for a list of all available properties.
-
-Required properties:
-- compatible	: Compatible list, contains one of the following controllers:
-			"cdns,ufshc" - Generic CDNS HCI,
-			"cdns,ufshc-m31-16nm" - CDNS UFS HC + M31 16nm PHY
-		  complemented with the JEDEC version:
-			"jedec,ufs-2.0"
-
-- reg		: Address and length of the UFS register set.
-- interrupts	: One interrupt mapping.
-- freq-table-hz	: Clock frequency table.
-		  See the ufshcd-pltfrm.txt for details.
-- clocks	: List of phandle and clock specifier pairs.
-- clock-names	: List of clock input name strings sorted in the same
-		  order as the clocks property. "core_clk" is mandatory.
-		  Depending on a type of a PHY,
-		  the "phy_clk" clock can also be added, if needed.
-
-Example:
-	ufs@...30000 {
-		compatible = "cdns,ufshc", "jedec,ufs-2.0";
-		reg = <0xfd030000 0x10000>;
-		interrupts = <0 1 IRQ_TYPE_LEVEL_HIGH>;
-		freq-table-hz = <0 0>, <0 0>;
-		clocks = <&ufs_core_clk>, <&ufs_phy_clk>;
-		clock-names = "core_clk", "phy_clk";
-	};
diff --git a/Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml b/Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml
new file mode 100644
index 0000000..4509ae0
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ufs/cdns,ufshc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cadence Universal Flash Storage (UFS) Controller
+
+maintainers:
+  - Dhananjay Kangude <dkangude@...ence.com>
+
+description:
+  UFS nodes are defined to describe on-chip Cadence UFS host controllers.
+  Each UFS controller instance should have its own node.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - cdns,ufshc
+              - cdns,ufshc-m31-16nm
+          - const: jedec,ufs-2.0
+      - items:
+          - const: jedec,ufs-2.0
+
+  reg:
+    items:
+      - description: UFS controller register set
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    items:
+      - description: Description of core_clk
+      - description: Description of phy_clk
+      - description: Description of ref_clk
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: core_clk
+      - const: phy_clk
+      - const: ref_clk
+
+  freq-table-hz:
+    $ref: /schemas/types.yaml#/definitions/uint64-matrix
+    description:
+      Clock frequency table.
+      See the ufshcd-pltfrm.txt for details.
+
+  dma-coherent: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - freq-table-hz
+  - clocks
+  - clock-names
+
+additionalProperties: false
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    ufs: ufs@...30000 {
+         compatible = "cdns,ufshc", "jedec,ufs-2.0";
+         reg = <0xfd030000 0x10000>;
+         interrupts = <0 1 IRQ_TYPE_LEVEL_HIGH>;
+         freq-table-hz = <0 0>;
+         clocks = <&ufs_core_clk>;
+         clock-names = "core_clk";
+    };
+
-- 
1.7.1