linux-kernel - [RFC PATCH 3/8] dt-bindings: ufs: cdns,ufshc: convert to dtschema

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Message-Id: <20220219184224.44339-4-krzysztof.kozlowski@canonical.com>
Date:   Sat, 19 Feb 2022 19:42:19 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Wei Xu <xuwei5@...ilicon.com>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Chanho Park <chanho61.park@...sung.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Jan Kotas <jank@...ence.com>, linux-scsi@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: [RFC PATCH 3/8] dt-bindings: ufs: cdns,ufshc: convert to dtschema

Convert the Cadence Universal Flash Storage (UFS) Controlle to DT schema
format.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 .../devicetree/bindings/ufs/cdns,ufshc.txt    | 32 -----------
 .../devicetree/bindings/ufs/cdns,ufshc.yaml   | 56 +++++++++++++++++++
 2 files changed, 56 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 02347b017abd..000000000000
--- 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 000000000000..68ae5663cd25
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: GPL-2.0-only 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:
+  - Jan Kotas <jank@...ence.com>
+
+allOf:
+  - $ref: ufs-common.yaml
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - cdns,ufshc
+            # CDNS UFS HC + M31 16nm PHY
+          - cdns,ufshc-m31-16nm
+      - const: jedec,ufs-2.0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    items:
+      - const: core_clk
+      - const: phy_clk
+      - const: ref_clk
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    ufs@...30000 {
+        compatible = "cdns,ufshc", "jedec,ufs-2.0";
+        reg = <0xfd030000 0x10000>;
+        interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+        freq-table = <0 0 0 0>;
+        clocks = <&ufs_core_clk>, <&ufs_phy_clk>;
+        clock-names = "core_clk", "phy_clk";
+    };
-- 
2.32.0