[PATCH v2 1/6] dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag

From: Johan Hovold
Date: Wed Feb 19 2025 - 08:47:12 EST


From: Jonathan Marek <jonathan@xxxxxxxx>

Qualcomm x1e80100 firmware sets the ownership of the RTC alarm to ADSP.
Thus writing to RTC alarm registers and receiving alarm interrupts is not
possible.

Add a qcom,no-alarm flag to support RTC on this platform.

Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
Link: https://lore.kernel.org/r/20241015004945.3676-3-jonathan@xxxxxxxx
[ johan: move vendor property; use boolean; reword description ]
Acked-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
---
Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml b/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
index d274bb7a534b..68ef3208c886 100644
--- a/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
@@ -50,6 +50,11 @@ properties:
items:
- const: offset

+ qcom,no-alarm:
+ type: boolean
+ description:
+ RTC alarm is not owned by the OS
+
wakeup-source: true

required:
--
2.45.3