linux-kernel - [PATCH v3 2/5] dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag

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Message-ID: <20241015004945.3676-3-jonathan@marek.ca>
Date: Mon, 14 Oct 2024 20:47:27 -0400
From: Jonathan Marek <jonathan@...ek.ca>
To: linux-arm-msm@...r.kernel.org
Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Satya Priya <quic_c_skakit@...cinc.com>,
	linux-rtc@...r.kernel.org (open list:REAL TIME CLOCK (RTC) SUBSYSTEM),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 2/5] dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag

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@...ek.ca>
---
 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 d274bb7a534b5..23a5316efadba 100644
--- a/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/qcom-pm8xxx-rtc.yaml
@@ -40,6 +40,11 @@ properties:
     description:
       Indicates that the setting of RTC time is allowed by the host CPU.
 
+  qcom,no-alarm:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Indicates that RTC alarm is not owned by HLOS (Linux).
+
   nvmem-cells:
     items:
       - description:
-- 
2.45.1