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Sat, 29 Aug 2026 16:22:55 +0200 (CEST) From: Markus Probst Date: Sat, 29 Aug 2026 14:22:56 +0000 Subject: [PATCH v7 1/6] dt-bindings: rtc: Add pinctrl for S35390A MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260829-rtc_s35390a_int1-v7-1-debcd31143ae@posteo.de> References: <20260829-rtc_s35390a_int1-v7-0-debcd31143ae@posteo.de> In-Reply-To: <20260829-rtc_s35390a_int1-v7-0-debcd31143ae@posteo.de> To: Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Michael Langer , Andrew Morton , Linus Walleij Cc: linux-arm-kernel@lists.infradead.org, linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Markus Probst X-Developer-Signature: v=1; a=openpgp-sha256; l=4267; i=markus.probst@posteo.de; h=from:subject:message-id; bh=/RN4bcc6JZOueMRQ2yaP4BUuLLpjTzlr7/VSEGCklNo=; 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preference=encrypt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260829_072307_548138_E6B8DD41 X-CRM114-Status: GOOD ( 15.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Synology NAS devices use the output pin for interrupt signal 1 to wake up the system. Move devicetree bindings for sii,s35390a into its own file. Add necessary properties to configure the individual pins via pinctrl, which allows the interrupt signal 1 to be used for wakeup alarm. Signed-off-by: Markus Probst --- .../devicetree/bindings/rtc/sii,s35390a.yaml | 111 +++++++++++++++++++++ .../devicetree/bindings/rtc/trivial-rtc.yaml | 3 - 2 files changed, 111 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/rtc/sii,s35390a.yaml b/Documentation/devicetree/bindings/rtc/sii,s35390a.yaml new file mode 100644 index 000000000000..d9da3abbbd51 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/sii,s35390a.yaml @@ -0,0 +1,111 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rtc/sii,s35390a.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: S-35390A 2-WIRE REAL-TIME CLOCK + +maintainers: + - Alexandre Belloni + +description: + The S-35390A is a CMOS 2-wire real-time clock IC which operates with the + very low current consumption in the wide range of operation voltage. + +allOf: + - $ref: rtc.yaml# + +properties: + compatible: + const: sii,s35390a + + reg: + maxItems: 1 + + interrupts: + minItems: 1 + maxItems: 2 + description: Supports up to 2 interrupt lines via the INT1 and INT2 pins. + + wakeup-parent: true + + wakeup-source: true + + "#clock-cells": + const: 1 + +patternProperties: + "^pins": + type: object + patternProperties: + "-pins$": + type: object + properties: + pins: + $ref: /schemas/pinctrl/pinmux-node.yaml#/properties/pins + minItems: 1 + items: + enum: + - int1 + - int2 + + function: + $ref: /schemas/types.yaml#/definitions/string + description: | + Pin function: + - ignore: Preserve the previous state. + - disable: Disable pin output. + - wakeup: Output wakes up the system. + - clock: Output clock pulse. + - pmin1: Minute periodical output with 50% duty. + - pmin2: Minute periodical output L for 7.81 ms. + Can only be used with pin int1. + enum: + - ignore + - disable + - wakeup + - clock + - pmin1 + - pmin2 + + required: + - pins + - function + + additionalProperties: false + + additionalProperties: false + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rtc@30 { + compatible = "sii,s35390a"; + reg = <0x30>; + pinctrl-0 = <&rtc_pins_default>; + pinctrl-names = "default"; + + wakeup-parent = <&int>; + + rtc_pins_default: pins { + int1-pins { + pins = "int1"; + function = "wakeup"; + }; + int2-pins { + pins = "int2"; + function = "disable"; + }; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml index f4d0eed98a08..7b3f682ef4d5 100644 --- a/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml +++ b/Documentation/devicetree/bindings/rtc/trivial-rtc.yaml @@ -81,8 +81,6 @@ properties: - ricoh,rv5c386 # I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC - ricoh,rv5c387a - # 2-wire CMOS real-time clock - - sii,s35390a # ST SPEAr Real-time Clock - st,spear600-rtc # VIA/Wondermedia VT8500 Real-time Clock @@ -105,5 +103,4 @@ required: - reg additionalProperties: false - ... -- 2.54.0