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charset="utf-8" From: Ciprian Marian Costea 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 Signed-off-by: Larisa Grigore Signed-off-by: Ciprian Marian Costea --- Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml b/Docu= mentation/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 =20 + 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: --=20 2.45.2 From nobody Fri Dec 19 00:37:21 2025 Received: from EUR02-VI1-obe.outbound.protection.outlook.com (mail-vi1eur02on2051.outbound.protection.outlook.com [40.107.241.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2FD0D20AF73; 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charset="utf-8" From: Ciprian Marian Costea If the RTC is not linked to any battery, the oscillator is stopped at startup and a SW reset command is generated to the PCF85063 RTC. Manually start the oscillator in case the PCF85063 RTC is not battery backed. Co-developed-by: Larisa Grigore Signed-off-by: Larisa Grigore Signed-off-by: Ciprian Marian Costea --- drivers/rtc/rtc-pcf85063.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index 4fa5c4ecdd5a..6de7344d2469 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -590,6 +590,14 @@ static int pcf85063_probe(struct i2c_client *client) =20 i2c_set_clientdata(client, pcf85063); =20 + if (of_property_read_bool(client->dev.of_node, "no-battery")) { + err =3D regmap_update_bits(pcf85063->regmap, PCF85063_REG_SC, + PCF85063_REG_SC_OS, 0); + if (err) + return dev_err_probe(&client->dev, err, + "Failed to start the oscillator\n"); + } + err =3D regmap_read(pcf85063->regmap, PCF85063_REG_SC, &tmp); if (err) return dev_err_probe(&client->dev, err, "RTC chip is not present\n"); --=20 2.45.2