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From:   Vladimir Oltean <vladimir.oltean@nxp.com>
To:     linux-spi@vger.kernel.org
Cc:     Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Vladimir Oltean <olteanv@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Kuldeep Singh <singh.kuldeep87k@gmail.com>,
        Michael Walle <michael@walle.cc>,
        Kuldeep Singh <kuldeep.singh@nxp.com>
Subject: [PATCH v2] dt-bindings: spi: convert Freescale DSPI to dt-schema
Date:   Sat, 12 Nov 2022 00:46:51 +0200
Message-Id: <20221111224651.577729-1-vladimir.oltean@nxp.com>
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From: Kuldeep Singh <kuldeep.singh@nxp.com>

Convert the Freescale DSPI binding to DT schema format.

Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
v1 (from more than 1 year ago) at:
https://patchwork.kernel.org/project/spi-devel-general/patch/20210315121518.3710171-1-kuldeep.singh@nxp.com/

 .../fsl,spi-fsl-dspi-peripheral-props.yaml    |  28 +++++
 .../bindings/spi/fsl,spi-fsl-dspi.yaml        | 118 ++++++++++++++++++
 .../devicetree/bindings/spi/spi-fsl-dspi.txt  |  65 ----------
 .../bindings/spi/spi-peripheral-props.yaml    |   1 +
 MAINTAINERS                                   |   3 +-
 5 files changed, 149 insertions(+), 66 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi-peripheral-props.yaml
 create mode 100644 Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
 delete mode 100644 Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt

diff --git a/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi-peripheral-props.yaml
new file mode 100644
index 000000000000..d15f77c040d1
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi-peripheral-props.yaml
@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/fsl,spi-fsl-dspi-peripheral-props.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Peripheral-specific properties for Freescale DSPI controller
+
+maintainers:
+  - Vladimir Oltean <olteanv@gmail.com>
+
+description:
+  See spi-peripheral-props.yaml for more info.
+
+properties:
+  fsl,spi-cs-sck-delay:
+    description:
+      Delay in nanoseconds between activating chip select and the start of
+      clock signal, at the start of a transfer.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  fsl,spi-sck-cs-delay:
+    description:
+      Delay in nanoseconds between stopping the clock signal and
+      deactivating chip select, at the end of a transfer.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+additionalProperties: true
diff --git a/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
new file mode 100644
index 000000000000..8a790c0ed95f
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/fsl,spi-fsl-dspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale DSPI Controller
+
+maintainers:
+  - Vladimir Oltean <olteanv@gmail.com>
+
+allOf:
+  - $ref: "spi-controller.yaml#"
+
+properties:
+  compatible:
+    description:
+      Some integrations can have a single compatible string containing their
+      SoC name (LS1012A, LS1021A, ...). Others require their SoC compatible
+      string, plus a fallback compatible string (either on LS1021A or on
+      LS2085A).
+    oneOf:
+      - enum:
+          - fsl,ls1012a-dspi
+          - fsl,ls1021a-v1.0-dspi
+          - fsl,ls1028a-dspi
+          - fsl,ls2085a-dspi
+          - fsl,lx2160a-dspi
+          - fsl,vf610-dspi
+      - items:
+          - enum:
+              - fsl,ls1012a-dspi
+              - fsl,ls1028a-dspi
+              - fsl,ls1043a-dspi
+              - fsl,ls1046a-dspi
+              - fsl,ls1088a-dspi
+          - const: fsl,ls1021a-v1.0-dspi
+      - items:
+          - enum:
+              - fsl,ls2080a-dspi
+              - fsl,lx2160a-dspi
+          - const: fsl,ls2085a-dspi
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: dspi
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+  spi-num-chipselects:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Number of available native Chip Select signals
+
+  bus-num:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: SoC-specific identifier for the SPI controller
+
+  little-endian: true
+  big-endian: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - spi-num-chipselects
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/fsl,qoriq-clockgen.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        spi@2100000 {
+            compatible = "fsl,ls1028a-dspi", "fsl,ls1021a-v1.0-dspi";
+            #address-cells = <1>;
+            #size-cells = <0>;
+            reg = <0x0 0x2100000 0x0 0x10000>;
+            interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+            clock-names = "dspi";
+            clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL QORIQ_CLK_PLL_DIV(2)>;
+            dmas = <&edma0 0 62>, <&edma0 0 60>;
+            dma-names = "tx", "rx";
+            pinctrl-names = "default";
+            pinctrl-0 = <&pinctrl_dspi0_1>;
+            spi-num-chipselects = <4>;
+            little-endian;
+
+            flash@0 {
+                compatible = "jedec,spi-nor";
+                spi-max-frequency = <10000000>;
+                fsl,spi-cs-sck-delay = <100>;
+                fsl,spi-sck-cs-delay = <100>;
+                reg = <0>;
+            };
+        };
+    };
diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
deleted file mode 100644
index 30a79da9c039..000000000000
--- a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-ARM Freescale DSPI controller
-
-Required properties:
-- compatible : must be one of:
-	"fsl,vf610-dspi",
-	"fsl,ls1021a-v1.0-dspi",
-	"fsl,ls1012a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
-	"fsl,ls1028a-dspi",
-	"fsl,ls1043a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
-	"fsl,ls1046a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
-	"fsl,ls1088a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
-	"fsl,ls2080a-dspi" (optionally followed by "fsl,ls2085a-dspi"),
-	"fsl,ls2085a-dspi",
-	"fsl,lx2160a-dspi",
-- reg : Offset and length of the register set for the device
-- interrupts : Should contain SPI controller interrupt
-- clocks: from common clock binding: handle to dspi clock.
-- clock-names: from common clock binding: Shall be "dspi".
-- pinctrl-0: pin control group to be used for this controller.
-- pinctrl-names: must contain a "default" entry.
-- spi-num-chipselects : the number of the chipselect signals.
-
-Optional property:
-- big-endian: If present the dspi device's registers are implemented
-  in big endian mode.
-- bus-num : the slave chip chipselect signal number.
-
-Optional SPI slave node properties:
-- fsl,spi-cs-sck-delay: a delay in nanoseconds between activating chip
-  select and the start of clock signal, at the start of a transfer.
-- fsl,spi-sck-cs-delay: a delay in nanoseconds between stopping the clock
-  signal and deactivating chip select, at the end of a transfer.
-
-Example:
-
-dspi0@4002c000 {
-	#address-cells = <1>;
-	#size-cells = <0>;
-	compatible = "fsl,vf610-dspi";
-	reg = <0x4002c000 0x1000>;
-	interrupts = <0 67 0x04>;
-	clocks = <&clks VF610_CLK_DSPI0>;
-	clock-names = "dspi";
-	spi-num-chipselects = <5>;
-	bus-num = <0>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_dspi0_1>;
-	big-endian;
-
-	sflash: at26df081a@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "atmel,at26df081a";
-		spi-max-frequency = <16000000>;
-		spi-cpol;
-		spi-cpha;
-		reg = <0>;
-		linux,modalias = "m25p80";
-		modal = "at26df081a";
-		fsl,spi-cs-sck-delay = <100>;
-		fsl,spi-sck-cs-delay = <50>;
-	};
-};
-
-
diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
index dca677f9e1b9..a475e757f8da 100644
--- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml
@@ -101,6 +101,7 @@ properties:
 # The controller specific properties go here.
 allOf:
   - $ref: cdns,qspi-nor-peripheral-props.yaml#
+  - $ref: fsl,spi-fsl-dspi-peripheral-props.yaml#
   - $ref: samsung,spi-peripheral-props.yaml#
   - $ref: nvidia,tegra210-quad-peripheral-props.yaml#
 
diff --git a/MAINTAINERS b/MAINTAINERS
index c242098a34f9..c75ae49c85b5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8160,7 +8160,8 @@ FREESCALE DSPI DRIVER
 M:	Vladimir Oltean <olteanv@gmail.com>
 L:	linux-spi@vger.kernel.org
 S:	Maintained
-F:	Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt
+F:	Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi.yaml
+F:	Documentation/devicetree/bindings/spi/fsl,spi-fsl-dspi-peripheral-props.yaml
 F:	drivers/spi/spi-fsl-dspi.c
 F:	include/linux/spi/spi-fsl-dspi.h
 
-- 
2.34.1