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Date: Tue, 5 Apr 2022 14:07:47 -0700
From: Jarrett Schultz <jaschultzms@...il.com>
To: Rob Herring <robh+dt@...nel.org>, Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <markgross@...nel.org>,
Maximilian Luz <luzmaximilian@...il.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-msm@...r.kernel.org, platform-driver-x86@...r.kernel.org,
Felipe Balbi <balbi@...nel.org>,
Jarrett Schultz <jaschultz@...rosoft.com>
Subject: [PATCH v5 1/4] dt-bindings: platform: microsoft: Document surface xbl
From: Jarrett Schultz <jaschultz@...rosoft.com>
Introduce yaml for surface xbl driver.
Signed-off-by: Jarrett Schultz <jaschultz@...rosoft.com>
---
Changed in v5:
- Updated description
- Added child node for imem
- Simplified example
---
Changes in v4:
- Addressed small formatting changes
- Removed unnecessary lines
---
Changes in v3:
- Updated description to only pertain to the hardware
- Updated the required field to properly reflect the binding
- Removed the first example
- Fixed the size of the reg field in the second example
---
Changes in v2:
- Removed json-schema dependence
- Elaborated on description of driver
- Updated example
---
.../platform/microsoft/surface-xbl.yaml | 70 +++++++++++++++++++
MAINTAINERS | 7 ++
2 files changed, 77 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..648476670bbd
--- /dev/null
+++ b/Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml
@@ -0,0 +1,70 @@
+# 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 <jaschultz@...rosoft.com>
+
+description: |
+ Defined to expose information that is used during production when
+ the device is in manufacturing mode. Some of the information included
+ in the imem section is -
+ * board_id
+ * battery_present
+ * hw_init_retries
+ * is_customer_mode
+ * is_act_mode
+ * pmic_reset_reason
+ * touch_fw_version
+ * ocp_error_location
+
+properties:
+ compatible:
+ const: simple-mfd
+
+ reg:
+ maxItems: 1
+
+ child-node:
+ description: A description of the xbl space within imem
+
+ type: object
+
+ properties:
+ compatible:
+ const: microsoft,sm8150-surface-duo-xbl
+
+ reg:
+ maxItems: 1
+
+ required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - ranges
+ - address-cells
+ - size-cells
+
+examples:
+ - |
+ imem@...bf000 {
+ compatible = "simple-mfd";
+ reg = <0x146bf000 0x1000>;
+ ranges = <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 13f9a84a617e..5d0ca2a98b57 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12649,6 +12649,13 @@ 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@...rosoft.com>
+L: linux-arm-msm@...r.kernel.org
+L: platform-driver-x86@...r.kernel.org
+S: Supported
+F: Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml
+
MICROSOFT SURFACE GPE LID SUPPORT DRIVER
M: Maximilian Luz <luzmaximilian@...il.com>
L: platform-driver-x86@...r.kernel.org
--
2.25.1
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