linux-kernel - [PATCH 1/2] dt-bindings: rtc: nxp,pcf85063: add 'no-battery' property

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Message-ID: <20250410082548.3821228-2-ciprianmarian.costea@oss.nxp.com>
Date: Thu, 10 Apr 2025 11:25:47 +0300
From: Ciprian Costea <ciprianmarian.costea@....nxp.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alexander Stein <alexander.stein@...tq-group.com>
Cc: linux-rtc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	s32@....com,
	imx@...ts.linux.dev,
	Christophe Lizzi <clizzi@...hat.com>,
	Alberto Ruiz <aruizrui@...hat.com>,
	Enric Balletbo <eballetb@...hat.com>,
	Eric Chanudet <echanude@...hat.com>,
	Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>,
	Larisa Grigore <larisa.grigore@....com>
Subject: [PATCH 1/2] dt-bindings: rtc: nxp,pcf85063: add 'no-battery' property

From: Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>

In case the RTC is not linked to any battery, the oscillator will
be stopped at startup, triggering a SW reset command for the PCF85063 RTC.
For this setup, introduce 'no-battery' property which can be used to
manually start the oscillator.

Co-developed-by: Larisa Grigore <larisa.grigore@....com>
Signed-off-by: Larisa Grigore <larisa.grigore@....com>
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@....nxp.com>
---
 Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
index 2f892f8640d1..b342eb13fb2e 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
@@ -36,6 +36,11 @@ properties:
     enum: [7000, 12500]
     default: 7000
 
+  no-battery:
+    description: Used in case the RTC is not linked to any battery so the
+      oscillator is stopped at startup.
+    type: boolean
+
   clock:
     $ref: /schemas/clock/fixed-clock.yaml
     description:
-- 
2.45.2