Convert the Texas Instruments WL1251 Wireless LAN Controller bindings to DT
schema.

During the conversion, the following updates were made:
- Added the 'clocks' property. It was missing from the txt binding but
  is used in device trees (omap3-n900.dts).
- Added 'spi-cpol' and 'spi-cpha'. These were present in the original
  txt binding's example but missing from its property list.
- 'vio-supply' and 'spi-max-frequency' are no longer required. The txt
  binding listed them as required, but they are only applicable when
  the chip is connected via SPI.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
---
 .../bindings/net/wireless/ti,wl1251.txt       | 64 -------------
 .../bindings/net/wireless/ti,wl1251.yaml      | 92 +++++++++++++++++++
 2 files changed, 92 insertions(+), 64 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
 create mode 100644 Documentation/devicetree/bindings/net/wireless/ti,wl1251.yaml

diff --git a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
deleted file mode 100644
index 88fd28d15eac..000000000000
--- a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.txt
+++ /dev/null
@@ -1,64 +0,0 @@
-* Texas Instruments wl1251 wireless lan controller
-
-The wl1251 chip can be connected via SPI or via SDIO. This
-document describes the binding for the SPI connected chip.
-
-Required properties:
-- compatible :        Should be "ti,wl1251"
-- reg :               Chip select address of device
-- spi-max-frequency : Maximum SPI clocking speed of device in Hz
-- interrupts :        Should contain interrupt line
-- vio-supply :        phandle to regulator providing VIO
-
-Optional properties:
-- ti,wl1251-has-eeprom : boolean, the wl1251 has an eeprom connected, which
-                         provides configuration data (calibration, MAC, ...)
-- ti,power-gpio :	 GPIO connected to chip's PMEN pin if operated in
-			 SPI mode
-- Please consult Documentation/devicetree/bindings/spi/spi-bus.txt
-  for optional SPI connection related properties,
-
-Examples:
-
-&spi1 {
-	wl1251@0 {
-		compatible = "ti,wl1251";
-
-		reg = <0>;
-		spi-max-frequency = <48000000>;
-		spi-cpol;
-		spi-cpha;
-
-		interrupt-parent = <&gpio2>;
-		interrupts = <10 IRQ_TYPE_NONE>; /* gpio line 42 */
-
-		vio-supply = <&vio>;
-		ti,power-gpio = <&gpio3 23 GPIO_ACTIVE_HIGH>; /* 87 */
-	};
-};
-
-&mmc3 {
-	vmmc-supply = <&wlan_en>;
-
-	bus-width = <4>;
-	non-removable;
-	ti,non-removable;
-	cap-power-off-card;
-
-	pinctrl-names = "default";
-	pinctrl-0 = <&mmc3_pins>;
-
-	#address-cells = <1>;
-	#size-cells = <0>;
-
-	wlan: wifi@1 {
-		compatible = "ti,wl1251";
-
-		reg = <1>;
-
-		interrupt-parent = <&gpio1>;
-		interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;	/* GPIO_21 */
-
-		ti,wl1251-has-eeprom;
-	};
-};
diff --git a/Documentation/devicetree/bindings/net/wireless/ti,wl1251.yaml b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.yaml
new file mode 100644
index 000000000000..1f46f1235035
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wireless/ti,wl1251.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/wireless/ti,wl1251.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments WL1251 Wireless LAN Controller
+
+maintainers:
+  - Eduard Bostina <egbostina@gmail.com>
+
+properties:
+  compatible:
+    const: ti,wl1251
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  vio-supply:
+    description:
+      Phandle to the regulator providing VIO. Required when connected via SPI.
+
+  ti,power-gpio:
+    maxItems: 1
+    description:
+      GPIO connected to chip's PMEN pin if operated in SPI mode.
+
+  ti,wl1251-has-eeprom:
+    type: boolean
+    description:
+      The wl1251 has an EEPROM connected, which provides configuration
+      data (calibration, MAC, ...).
+
+  clocks:
+    maxItems: 1
+
+  spi-max-frequency: true
+  spi-cpol: true
+  spi-cpha: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+    spi1 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        wl1251@0 {
+            compatible = "ti,wl1251";
+            reg = <0>;
+            spi-max-frequency = <48000000>;
+            spi-cpol;
+            spi-cpha;
+            interrupt-parent = <&gpio2>;
+            interrupts = <10 IRQ_TYPE_NONE>;
+            vio-supply = <&vio>;
+            ti,power-gpio = <&gpio3 23 GPIO_ACTIVE_HIGH>;
+        };
+    };
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    mmc3 {
+        vmmc-supply = <&wlan_en>;
+        bus-width = <4>;
+        non-removable;
+        ti,non-removable;
+        cap-power-off-card;
+        pinctrl-names = "default";
+        pinctrl-0 = <&mmc3_pins>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        wifi@1 {
+            compatible = "ti,wl1251";
+            reg = <1>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <21 IRQ_TYPE_LEVEL_HIGH>;
+            ti,wl1251-has-eeprom;
+        };
+    };
-- 
2.43.0