[PATCH 5/8] dt-bindings: rtc: Add Amlogic Meson vrtc controller binding
Heiner Kallweit
hkallweit1 at gmail.com
Mon Jan 23 13:28:49 PST 2023
Add Amlogic Meson vrtc controller binding.
Tested with make targets dt_binding_check and dtbs_check.
Signed-off-by: Heiner Kallweit <hkallweit1 at gmail.com>
---
.../bindings/rtc/amlogic,meson-vrtc.yaml | 50 +++++++++++++++++++
.../bindings/rtc/rtc-meson-vrtc.txt | 22 --------
2 files changed, 50 insertions(+), 22 deletions(-)
create mode 100644 Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml
delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt
diff --git a/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml b/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml
new file mode 100644
index 000000000..26a70b3ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/amlogic,meson-vrtc.yaml
@@ -0,0 +1,50 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/amlogic,meson-vrtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Virtual RTC (VRTC)
+
+maintainers:
+ - Neil Armstrong <neil.armstrong at linaro.org>
+
+description: |
+ This is a Linux interface to an RTC managed by firmware, hence it's
+ virtual from a Linux perspective. The interface is 1 register where
+ an alarm time (in seconds) is to be written.
+ The alarm register is a simple scratch register shared between the
+ application processors (AP) and the secure co-processor (SCP.) When
+ the AP suspends, the SCP will use the value of this register to
+ program an always-on timer before going sleep. When the timer expires,
+ the SCP will wake up and will then wake the AP.
+
+allOf:
+ - $ref: rtc.yaml#
+
+properties:
+ compatible:
+ enum:
+ - amlogic,meson-vrtc
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ bus at ff800000 {
+ reg = <0x0 0xff800000 0x0 0x100000>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ rtc at a8 {
+ compatible = "amlogic,meson-vrtc";
+ reg = <0x0 0x000a8 0x0 0x4>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt b/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt
deleted file mode 100644
index c014f54a9..000000000
--- a/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-* Amlogic Virtual RTC (VRTC)
-
-This is a Linux interface to an RTC managed by firmware, hence it's
-virtual from a Linux perspective. The interface is 1 register where
-an alarm time (in seconds) is to be written.
-
-Required properties:
-- compatible: should be "amlogic,meson-vrtc"
-- reg: physical address for the alarm register
-
-The alarm register is a simple scratch register shared between the
-application processors (AP) and the secure co-processor (SCP.) When
-the AP suspends, the SCP will use the value of this register to
-program an always-on timer before going sleep. When the timer expires,
-the SCP will wake up and will then wake the AP.
-
-Example:
-
- vrtc: rtc at 0a8 {
- compatible = "amlogic,meson-vrtc";
- reg = <0x0 0x000a8 0x0 0x4>;
- };
--
2.39.1
More information about the linux-amlogic
mailing list