[PATCH v2 1/5] dt-bindings: platform: microsoft: Document surface xbl

[Jarrett Schultz <jaschultzms@gmail.com>]

Introduce yaml for surface xbl driver.

Signed-off-by: Jarrett Schultz <jaschultz@microsoft.com>

---

Changes in v2:
 - Removed json-schema dependence
 - Elaborated on description of driver
 - Updated example

---

 .../platform/microsoft/surface-xbl.yaml       | 57 +++++++++++++++++++
 MAINTAINERS                                   |  7 +++
 2 files changed, 64 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml

diff --git a/Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml b/Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml
new file mode 100644
index 000000000000..09f806f373bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/platform/microsoft/surface-xbl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Surface Extensible Bootloader for Microsoft Surface Duo
+
+maintainers:
+  - Jarrett Schultz <jaschultzMS@gmail.com>
+
+description: |
+  Exposes the following device information to user space via sysfs -
+    * board_id
+    * battery_present
+    * hw_init_retries
+    * is_customer_mode
+    * is_act_mode
+    * pmic_reset_reason
+    * touch_fw_version
+    * ocp_error_location
+  See sysfs documentation for more information.
+
+properties:
+  compatible:
+    const: microsoft,sm8150-surface-duo-xbl
+
+  reg:
+    maxItems: 1
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    xbl@146bfa94 {
+      compatible = "microsoft,sm8150-surface-duo-xbl";
+      reg = <0x00 0x146bfa94 0x00 0x100>;
+    };
+  - |
+    imem@146bf000 {
+      compatible = "simple-mfd";
+      reg = <0x0 0x146bf000 0x0 0x1000>;
+      ranges = <0x0 0x0 0x146bf000 0x1000>;
+
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      xbl@a94 {
+        compatible = "microsoft,sm8150-surface-duo-xbl";
+        reg = <0xa94 0x100>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index eeb4c70b3d5b..8643546f8fab 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12423,6 +12423,13 @@ F:	Documentation/driver-api/surface_aggregator/clients/dtx.rst
 F:	drivers/platform/surface/surface_dtx.c
 F:	include/uapi/linux/surface_aggregator/dtx.h
 
+MICROSOFT SURFACE DUO XBL DRIVER
+M:	Jarrett Schultz <jaschultz@microsoft.com>
+L:	linux-arm-msm@vger.kernel.org
+L:	platform-driver-x86@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml
+
 MICROSOFT SURFACE GPE LID SUPPORT DRIVER
 M:	Maximilian Luz <luzmaximilian@gmail.com>
 L:	platform-driver-x86@vger.kernel.org
-- 
2.25.1