Merge series "Add support for voltage regulator on ChromeOS EC." from Pi-Hsun Shih <pihsun@chromium.org>:

Add support for controlling voltage regulator that is connected and
controlled by ChromeOS EC. Kernel controls these regulators through
newly added EC host commands.

Changes from v5:
* Move new host command to a separate patch.
* Use devm_regulator_register.
* Address review comments.

Changes from v4:
* Change compatible name from regulator-cros-ec to cros-ec-regulator.

Changes from v3:
* Fix dt bindings file name.
* Remove check around CONFIG_OF in driver.
* Add new host commands to cros_ec_trace.
* Address review comments.

Changes from v2:
* Add 'depends on OF' to Kconfig.
* Add Kconfig description about compiling as module.

Changes from v1:
* Change compatible string to google,regulator-cros-ec.
* Use reg property in device tree.
* Change license for dt binding according to checkpatch.pl.
* Address comments on code styles.

Pi-Hsun Shih (3):
  dt-bindings: regulator: Add DT binding for cros-ec-regulator
  platform/chrome: cros_ec: Add command for regulator control.
  regulator: Add driver for cros-ec-regulator

 .../regulator/google,cros-ec-regulator.yaml   |  51 ++++
 drivers/platform/chrome/cros_ec_trace.c       |   5 +
 drivers/regulator/Kconfig                     |  10 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/cros-ec-regulator.c         | 257 ++++++++++++++++++
 .../linux/platform_data/cros_ec_commands.h    |  82 ++++++
 6 files changed, 406 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/google,cros-ec-regulator.yaml
 create mode 100644 drivers/regulator/cros-ec-regulator.c

base-commit: b791d1bdf9212d944d749a5c7ff6febdba241771
--
2.27.0.290.gba653c62da-goog

1 files changed, 51 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/regulator/google,cros-ec-regulator.yaml b/Documentation/devicetree/bindings/regulator/google,cros-ec-regulator.yaml
new file mode 100644
index 000000000000..c9453d7ce227
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/google,cros-ec-regulator.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/google,cros-ec-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ChromeOS EC controlled voltage regulators
+
+maintainers:
+  - Pi-Hsun Shih <pihsun@chromium.org>
+
+description:
+  Any property defined as part of the core regulator binding, defined in
+  regulator.yaml, can also be used.
+
+allOf:
+  - $ref: "regulator.yaml#"
+
+properties:
+  compatible:
+    const: google,cros-ec-regulator
+
+  reg:
+    maxItems: 1
+    description: Identifier for the voltage regulator to ChromeOS EC.
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    spi0 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        cros_ec: ec@0 {
+            compatible = "google,cros-ec-spi";
+            reg = <0>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            regulator@0 {
+                compatible = "google,cros-ec-regulator";
+                regulator-min-microvolt = <1800000>;
+                regulator-max-microvolt = <3300000>;
+                reg = <0>;
+            };
+        };
+    };
+...